Developer Tools & SDK Platforms

Easy provides a developer-first payment integration stack built around a REST API with predictable responses and a multi-language SDK library. The toolkit includes a React SDK and React Native SDK for frontend integrations, a Node.js SDK for server-side processing, and Ruby and Python libraries for backend flexibility. A no-code checkout option is also available for merchants without engineering resources. Documentation covers payments, billing, and treasury workflows, hosted at docs.itseasy.co. The API supports one-time payments, payment links, Apple Pay, Google Pay, subscription plans, recurring billing, invoicing, dunning management, bank transfer payouts, and payout links. A marketplace feature for multi-merchant use cases is noted as forthcoming. Easy partners with DFNS for enterprise-grade wallet-as-a-service infrastructure and Basis Theory for payment data security. Merchant onboarding is automated with KYC/AML verification completing in approximately 90 seconds, lowering the integration barrier for businesses accepting both fiat and stablecoin payments.

Notifi Network provides a developer SDK that lets decentralized applications integrate on-chain triggered notifications quickly. Developers define alert topics—wallet activity thresholds, liquidation ratios, governance proposal state changes—and Notifi's infrastructure listens for those events on-chain and delivers notifications to all channels a user has subscribed to. Pre-built React components reduce the front-end integration effort to near plug-and-play. Alongside the SDK, Notifi provides an Admin Portal, a no-code interface for product and marketing teams to send broadcast announcements and targeted messages to token holder segments without engineering involvement. As of its 2023 year-in-review, the platform supported more than 40 integrations across DeFi protocols, NFT marketplaces, gaming projects, wallets, and DAO tooling, all purpose-built for Web3's on-chain event model and multi-wallet user base.

Dark Research ships open-source developer tooling for building AI agents on Solana, anchored by its Solana Agent Server — an MCP server hosted on Phala Cloud with TEE backing that exposes on-chain operations as standardized tools for AI models. Developers can query balances, issue tokens, and interact with Solana programs through a uniform MCP interface without assembling the secure-compute stack themselves. The GitHub organization maintains several companion tools: generative-ui for building AI-driven interfaces, infinite-memory for extending LLM context windows, and mallory, a React Native boilerplate for crypto and AI chat apps with embedded wallets. The project also maintains a Solana MCP fork with on-chain-specific enhancements, contributing directly to the tooling layer available to Solana developers building AI-native applications.

OpenSea provides a developer toolkit for building applications that interact with NFT and token market data across its 26-plus supported chains. The platform publishes a REST Marketplace API, an NFT data API, and a WebSocket streaming API for real-time event feeds covering listings, offers, and transfers. Official SDKs — @opensea/sdk and @opensea/stream-js on npm — reduce integration overhead for developers building on top of OpenSea's data. For agent-based and AI integrations, OpenSea maintains a dedicated MCP server at mcp.opensea.io that exposes real-time NFT, wallet, and marketplace data in a machine-readable format. The Seaport and SeaDrop protocol source code is publicly available on GitHub under the ProjectOpenSea organization, allowing developers to audit or build directly on the underlying contracts. These resources make OpenSea accessible to developers building cross-chain NFT applications, data pipelines, or AI-powered market tools.

Turnkey is a developer-facing wallet infrastructure platform that exposes a REST API for private key generation, transaction signing, and policy enforcement, without raw keys ever leaving hardware-isolated secure enclaves. Developers integrate through official SDK packages including @turnkey/solana for Solana web3.js compatibility and @turnkey/wallet-stamper for wallet-based API authentication, enabling embedded wallets, treasury systems, and agentic signing pipelines without custom key management code. The platform covers the full lifecycle of non-custodial wallet infrastructure: key generation, signing, policy evaluation, blockhash injection, compute unit estimation, and fee sponsorship. Ed25519 and Secp256k1 signing under a single API eliminates chain-specific pipelines for teams building across Solana and EVM ecosystems. Customers including Alchemy, Moonshot, Polymarket, and Mysten Labs span consumer apps, institutional trading, and blockchain infrastructure.

Zynta provides a full-stack API platform that lets fintechs, payment processors, and enterprise treasury teams integrate regulated cross-border payment infrastructure without building compliance, licensing, or blockchain connectivity themselves. The developer offering includes a REST API with an OpenAPI specification, Postman collections, and SDKs for Node.js, Python, and PHP, along with a sandbox-to-production pathway Zynta commits to completing in under two weeks. Beyond standard API access, Zynta offers a white-label option allowing fintech platforms to embed the full payment and compliance stack under their own brand. Webhook events deliver real-time transaction status updates, while automated settlement reporting and audit trail generation handle the accounting and compliance documentation burden. The company frames its compliance layer—covering automated KYC, KYB, and AML monitoring across EU and African jurisdictions—as Compliance as a Service, a standalone product available to third-party fintechs that need regulatory coverage without the overhead of building it in-house.

The Certora Prover integrates formal verification into developer build pipelines, allowing teams to specify contract properties in CVL and automatically check those properties against compiled bytecode. The tool covers every possible execution path rather than a sampled subset, and analyses run at the bytecode level to reflect what actually executes on-chain. Open-sourced in February 2025 under GPLv3, the Prover can be run locally or through Certora's cloud interface, with documentation, example specifications, and public security reports available on GitHub at no cost. AutoProver, launched in July 2026, generates CVL specifications automatically from existing code and plain-English documentation, removing manual spec authorship as the primary barrier to adoption. The Prover supports EVM-compatible chains, Solana via sBPF bytecode analysis, and Stellar via WebAssembly, with Rust and Solana AutoProver support on the development roadmap. Certora maintains a subsidized program making up to one million USD available to Solana projects, reducing cost barriers to integrating formal verification into the development workflow.

Leea Labs ships a developer SDK in Python and JavaScript that abstracts the complexity of deploying multi-agent AI systems on decentralized infrastructure. The SDK handles automated provisioning across multi-cloud and on-premise environments, cross-platform agent mobility, and dynamic linking between agent components, while integrating with frameworks teams already use — LangChain, LangGraph, CrewAI, AutoGen, and Swarm. The Agent Name Service gives each registered agent a unique on-chain address, making agents discoverable and connectable without manual configuration. A public REST API supports agent execution for teams preferring not to use the SDK directly, and RAG database integrations including Chroma and Pinecone enable agents to maintain persistent memory and context across tasks. The SDK is publicly available on GitHub.

Kiln provides a developer-facing API and SDK layer that abstracts away validator complexity across 30+ proof-of-stake blockchains, letting teams integrate staking without building node infrastructure. The Connect SDK offers a unified API covering validator operations, rewards tracking, and protocol-specific handling across all supported networks. A Reporting API handles automated accounting, a Transaction Crafting API supports programmatic transaction construction, and a no-code Widget gives teams a quick embed path for staking with minimal integration overhead. In June 2026, Kiln extended Connect to AI agent workflows by publishing an MCP Server and llms.txt file, allowing autonomous agents to query staking positions, retrieve rewards data, and initiate transactions without per-call human configuration. The company also maintains open-source validator monitoring tooling for Ethereum, Cosmos, Near, and Cardano. On Solana, the Connect API gives partners programmatic access to Kiln's $617 million delegated SOL infrastructure, with white-label arrangements available for embedding SOL staking under a partner brand.

dev.fun tackled Solana dApp creation with an AI-assisted, no-code builder that required zero programming experience. Users described desired functionality in plain language and the platform generated a working application, targeting creators, game designers, and community builders who lacked technical backgrounds. The stated goal was to let anyone turn an idea into a deployed Solana app with a single click. Beyond generating app code, dev.fun integrated its builder with pump.fun's token launch infrastructure, so every generated app could be instantly tokenized and made tradable. This created a full pipeline from concept to community-backed product without developer skills at any stage. Backed by Colosseum and launched in early 2025, the platform positioned itself at the intersection of Solana's no-code tooling push and the ecosystem's broader expansion into AI-assisted application development.

Beamable Network offers game studios an SDK-based developer integration path into a decentralized backend network targeting Unity and Unreal Engine developers. The existing Beamable SDK already supports backend features including matchmaking, player inventory, leaderboards, and social systems; migrating to the decentralized network routes those same SDK calls through node operators rather than centralized cloud providers while preserving the developer-facing API surface. This design allows studios to switch from hyperscaler infrastructure to the decentralized protocol without rewriting integrations already deployed in live titles. The protocol specifically targets developer pain points around cloud vendor costs, reliability, and lock-in associated with AWS, Google Cloud, and Azure. The network three-node architecture manages the compute layer that developer SDKs depend on: Worker Nodes execute microservices, Router Nodes direct compute requests, and Checker Nodes verify execution integrity. Studios pay for workloads using BMB tokens, and BMB holders can vote on roadmap priorities and ecosystem fund allocations through DAO governance. Worker Nodes must sustain uptime above 99.7 percent for full reputation bonuses, and the Proof-of-Utility reward mechanism ties node incentives to verified workloads from real game sessions rather than arbitrary computation. Beamable Inc. existing 11 billion monthly API calls are intended to migrate onto the node network during the OZONE phase in 2026, providing a live-traffic test of the SDK-to-decentralized-backend integration at production scale.

Paybis offers a B2B on-ramp and off-ramp API that DeFi projects, gaming platforms, fintech apps, and NFT marketplaces can integrate through a single connection. The API inherits the platform's existing KYC compliance, regulatory licences active across 180 countries, and liquidity covering 90 cryptocurrencies and 70 fiat currencies, removing the need for development teams to build or license that infrastructure independently. Most transactions settle in under one minute, and Solana assets including SOL and USDT on Solana are available throughout. Beyond the core payment API, Paybis provides corporate wallet solutions and mass crypto payment functionality suited to businesses that need to distribute digital assets across large user bases. The same regulatory layer that backs the retail product applies to API integrations, giving developers a compliant distribution path for Solana assets without navigating separate licences in individual jurisdictions. The platform's 180-country retail footprint and 24-hour multilingual support also transfer to B2B partners, making it a practical infrastructure choice for products targeting non-English-speaking markets.

All That Node from DSRV provides developers with a managed blockchain infrastructure layer across Solana and over 120 other networks, removing the burden of running full nodes. The platform includes a project dashboard with API key management, usage analytics, and endpoint-level security controls such as IP and origin allow-listing. Public endpoints and a testnet faucet further reduce friction for developers getting started across its 77 supported protocols, while collaborator invites allow multi-person teams to share project access. A notable addition is MCP (Model Context Protocol) integration, allowing AI agents and LLM-powered tools to query blockchain RPC services through a standardized machine-readable interface — positioning the platform at the intersection of blockchain infrastructure and AI tooling. The free shared tier offers 50,000 daily requests, providing a practical on-ramp for solo builders before dedicated infrastructure becomes necessary. Historical blockchain data is included at no extra cost, a differentiator against providers that gate archive access behind paid tiers, and the platform has grown to serve over 12,000 active developers across more than 40,000 individual projects.

Socket Protocol provides a layered suite of developer integration surfaces built around a single routing API, enabling teams to embed cross-chain asset transfers without maintaining individual bridge integrations. The core Routing API offers REST access with OpenAPI specs for custom implementations, while a plug-and-play React widget reduces time to integration for teams needing a ready-made UI component. An Agent Integration Layer is designed explicitly for LLM-powered tools that need to execute cross-chain operations autonomously, a relevant offering for Solana's expanding AI agent ecosystem. Additional developer features include simulated quote filtering to surface transactions likely to revert before submission, exact output quoting that guarantees a destination amount rather than a source estimate, gasless transaction flows, and deposit address generation for multi-chain deposit scenarios. The platform is free for both developers and end users. Socket maintains documentation, SDKs, and API references at docs.socket.tech, and offers checkout and deposit flow abstractions that let users pay or deposit using assets they already hold regardless of destination chain requirements. Over 100 protocols have integrated via these developer tools.

The OneBalance Toolkit was a developer API launched in open beta in January 2025, offering application developers a single integration point for cross-chain functionality: balance aggregation across chains, unified asset lists, transaction execution, and payment flows. The API natively supported EIP-4337 smart contract accounts and added EIP-7702 compatibility in September 2025, keeping pace with evolving Ethereum account abstraction standards. Integration partners included Privy for embedded wallets, Turnkey for key management infrastructure, VOOI for perpetual trading, and Dexari for self-custodial trading — demonstrating that chain abstraction could be layered into existing products rather than requiring dedicated new wallets. The Toolkit handled Solana accounts natively without a proxy layer, making cross-chain Solana integrations straightforward for developers already using the API. Underneath the Toolkit's developer surface, the Permissions Engine let applications request scoped session keys from users — enabling programmable, time-limited, or condition-based transaction authority without surrendering full wallet control to any counterparty. Circuit breaker policies could automatically revoke access under defined conditions. Virtual Account Environments wrapped each user's on-chain state across all supported chains into a single logical account, simplifying the development of applications where users interact with multiple networks transparently. OneBalance deprecated the Toolkit API on May 18, 2026, with Zerion's API and Relay cited in migration guidance as alternatives for balance aggregation and chain-abstracted execution respectively.

LP Agent publishes a documented REST API under an OpenAPI specification covering position management, pool discovery, pool statistics, zap-in and zap-out transaction generation, fee claiming, and a Solana JSON-RPC proxy. The API is designed for developers building custom LP bots, automated liquidity strategies, or analytics integrations that require programmatic access to concentrated liquidity protocols on Solana. An accompanying CLI extends access beyond the web interface, and a Jito Block Engine integration provides MEV-aware transaction submission for latency-sensitive automated strategies. This open API and CLI layer positions LP Agent as infrastructure for the broader LP automation ecosystem on Solana, not only as an end-user application.

Vertex was a Solana-native on-chain data indexing service, launched in April 2025, that aimed to make blockchain data queryable for program developers without requiring custom infrastructure. It targeted builders who needed structured access to on-chain state but lacked the resources to run full indexing pipelines. The project offered itself as a lower-cost alternative to enterprise-grade tools like The Graph's Substreams or Helius webhooks, framing accessibility and low operational overhead as its core differentiators. The core stack paired a Rust-based Geyser plugin — streaming real-time account updates and transactions from a Solana validator — with a NestJS indexer that processed and persisted those streams for querying. A testnet environment at app.vertex-sol.xyz let developers trial the service before a production deployment. The project addressed a genuine infrastructure challenge given Solana's high throughput, though it stalled at testnet stage and showed no signs of production activity by mid-2026.

Murphy is an open-source SDK for Solana application developers, designed to eliminate the friction of wiring up common blockchain interactions from scratch. Launched in February 2025 under the MIT license, it provides a component registry of drop-in UI elements, swap primitives, wallet connectors for Phantom and WalletConnect, and NFT utilities — all written in TypeScript. The project positioned itself as an "OnchainKit," offering a cohesive set of ready-made building blocks so product teams could focus on application logic rather than low-level protocol plumbing. A companion Next.js example repository was published alongside the core SDK to lower the integration barrier for first-time users. Murphy emerged from a collaboration with the Send AI developer community and was born from a public call for better onboarding infrastructure on Solana. The main SDK repository accumulated 381 commits, 29 stars, and 15 forks before development wound down in mid-2025, and remains publicly accessible under its MIT license for teams that wish to fork or adapt its components. Murphy was also surfaced through the Colosseum hackathon project explorer, placing it among a cohort of developer tooling projects that emerged from Solana Foundation's 2024–2025 builder programs. Its TypeScript-first architecture, with typed interfaces throughout, made IDE autocomplete and static analysis practical for teams building modern Solana applications.

LazorKit ships four client SDKs that abstract passkey authentication, session key delegation, gas sponsorship, and on-chain permission enforcement so developers do not need to build that infrastructure themselves. The React SDK handles WebAuthn passkey authentication for web applications, the React Native SDK targets iOS and Android with Secure Enclave integration via the wallet-mobile-adapter package, and Web3.js v1 and v2 SDKs cover direct contract interactions. All four expose a consistent hook pattern including connect, disconnect, signAndSendTransaction, and smartWalletPubkey, and the project is listed as an official Solana Foundation developer template under both Vite and Expo starter configurations. The on-chain program uses the Secp256r1 curve to verify passkey signatures on-chain without routing through off-chain components. For complex multi-instruction flows exceeding a single transaction's byte limit, LazorKit's deferred execution model separates payload authorization from execution, expanding effective capacity to approximately 1,100 bytes. The Kora paymaster integration enables gasless transactions so end users do not need to hold SOL to interact with applications built on LazorKit. The project is MIT-licensed and open-source, with active repositories under the lazor-kit GitHub organization and an audited V2 program deployed to mainnet.

Fystack is a self-hostable MPC custody platform that provides the payment infrastructure layer for fintech companies and payment processors integrating stablecoin rails. Its Apex API handles wallet creation, asset transfers, payment checkout flows, transaction policies, and webhook delivery across more than ten blockchains including Solana. The auto-sweep feature automatically aggregates incoming deposits from generated deposit addresses into consolidation wallets, removing manual reconciliation from stablecoin payment operations. Fystack's multi-chain indexer tracks on-chain deposits in real time, while a rescanner service fills in any block gaps to ensure payment flows maintain consistent chain-state visibility. The platform positions Solana as a preferred settlement layer due to its low transaction fees and fast settlement speeds, making it a natural fit for payment processors routing USDT and USDC at scale. Fystack's open-core model supports Docker Compose, Kubernetes, and bare-metal deployment options so companies can embed the payment infrastructure directly into their own stack rather than routing transactions through a third-party custodian. As of mid-2026, more than 20 self-hosted instances were running in production across customers including PrimePay and EXDT. Fystack charges flat licensing rather than per-transaction fees, a structural advantage for high-volume payment operations where basis-point custody fees become prohibitive.

Kotani Pay provides a middleware API layer that connects blockchain networks to African mobile money and banking rails, enabling crypto wallets, neobanks, and fintech applications to offer on-ramp and off-ramp services in African markets. Documented integrations include Celo's Valora wallet, Yellowcard, and Fonbank, and the platform supports over 15 blockchains — including Celo, Stellar, Polygon, Optimism, Arbitrum, and Avalanche — for stablecoin assets. The API architecture includes a USSD integration layer that abstracts on-chain operations behind dial-code menus, removing wallet management requirements for end users. Planned product additions include Reconset (reconciliation-as-a-service) and Money Ledger (ledger-as-a-service), and the company holds a Crypto Asset Service Provider license from South Africa's FSCA (license #53594), with regulatory approvals pursued in Ghana and Zambia.

Blockradar is a Wallet-as-a-Service API that lets fintech developers issue non-custodial stablecoin wallets, automate treasury sweeps, and integrate AML compliance without building multi-chain infrastructure from scratch. A single API call specifies chain and asset, and the platform handles address generation, deposit detection via webhooks, balance consolidation, and transaction screening against OFAC, FBI, Tether, and Circle blocklists. The gasless feature sponsors native network fees so end users need not hold SOL or other gas tokens before transacting, reducing drop-off in consumer-facing apps. Automated sweep logic consolidates balances into treasury accounts while a master-wallet-and-child-address model keeps each user funds isolated. By August 2026 Blockradar's tooling served hundreds of fintechs across more than 20 countries on eight chains including Solana.

Fonbnk provides three integration modes for developers and businesses building on its airtime-to-stablecoin settlement infrastructure. A zero-code embeddable widget allows wallets and apps to add mobile airtime and mobile money on-ramp capability with no backend work required. A merchant dashboard provides order monitoring, reconciliation tools, and liquidity management. A signed REST API with webhook support enables server-to-server integration with programmatic control and real-time order-status-change notifications. Partner applications that have already integrated Fonbnk include MiniPay, MetaMask, Trust Wallet, Brave, Cenoa, and the onramp aggregator Onramper. The platform's stablecoin settlement layer covers 15 blockchain networks including Solana, Base, Ethereum, Polygon, Celo, and Stellar, letting developers route settled funds to whichever network their users prefer. Fonbnk also integrates with Tanda, connecting its infrastructure to a network of over 40,000 agents, and with Opera Mini, reaching 2.2 million users across its target markets in Sub-Saharan Africa.

Mesh provides SDKs for Web, iOS, Android, React Native, and Flutter alongside a RESTful API for integrating crypto payment and account-funding flows into applications. The integration model uses a Link Token system: a server-side request generates a session token encoding all payment parameters, and the client SDK uses it to launch a guided interface for account authentication and transfer confirmation. Webhooks deliver on-chain confirmation events back to the integrating application with HMAC-SHA256 signing for verification. A sandbox environment covers the full integration flow before production deployment. Returning users benefit from Mesh Managed Tokens (MMT), which enable one-tap re-authentication for previously connected accounts without re-entering credentials. The platform's API connects integrating applications to 300+ wallets and exchanges across 24+ blockchain networks, with active integrations including MetaMask, Coinbase, Binance, and Revolut serving over 900 million users globally. Mesh's B2B model targets financial applications, fintechs, and payment processors building on its connectivity layer rather than managing per-chain or per-wallet integrations independently.

OnMeta provides two integration paths for Web3 developers looking to embed fiat on-ramp and off-ramp capabilities into their applications. The widget integration delivers a pre-built, customizable UI component requiring minimal code, with support for theming, KYC module configuration, and user data pre-fill. The RESTful API integration gives teams full control to build custom payment flows with webhook support for transaction event notifications. Both paths abstract away the complexity of fiat compliance, liquidity routing, and local payment-network integrations across India, the Philippines, and Indonesia. OnMeta also offers white-label infrastructure through modular APIs and dashboards, enabling partners to offer on/off-ramp services under their own brand identity. The platform supports Solana alongside 16 or more blockchains and over 7,000 tokens, giving developers broad chain coverage from a single integration.

Tatum provides a unified developer layer covering RPC access, indexed blockchain data, wallet management, real-time notifications, and token pricing through a single platform. Its Blockchain Data API normalizes data across supported chains into a consistent schema, letting developers query wallet balances, token holdings, transaction history, NFT metadata, and staking data without running custom indexers. The Smart Wallet SDK handles key management, transaction signing, gas sponsorship, and custodial or non-custodial wallet flows. In 2026 the platform added AI Builder, a natural language tool that assembles chain integrations and API configurations from plain descriptions, alongside Model Context Protocol integration that allows autonomous AI agents to read blockchain state and send transactions programmatically.

Transak provides two integration paths for developers: a pre-built embeddable widget deployable within days, and a white-label API giving partners full control over the user experience. Both modes handle compliance, KYC, banking, and payment-rail plumbing on behalf of the integrating application. The API path enables brand-consistent flows where users complete transactions without visibly leaving the partner interface. Advanced options include headless card processing and Apple Pay integrations for programmatic or agentic use cases where no visible UI redirect is appropriate. KYC Reliance and Auth Reliance APIs let partners pass existing user credentials to reduce onboarding friction. These developer-facing capabilities have supported adoption across 600-plus wallets, exchanges, and decentralized applications.

Uniramp delivers its fiat routing capabilities as a developer product, offering three integration paths: an embeddable widget, a programmatic API, and a hosted web application. The v2 widget, released in 2024, provides a reported 30% speed improvement over its predecessor and added eight new provider integrations. Operators can customize it to whitelist or blacklist specific cryptocurrencies, fiat currencies, and payment methods, letting teams align the widget with their product's regulatory posture or geographic focus. The API layer gives developers programmatic access to the same routing engine that powers the widget, enabling custom interfaces with tighter control over the user experience. A webhook system delivers real-time event notifications tied to transaction state changes, allowing projects to trigger downstream automation within their own backend infrastructure. For Solana dApps, wallets, and protocols, this means adding a native fiat-entry path without redirecting users away from the product.

CPAY provides a modular developer infrastructure stack for embedding crypto payment and wallet functionality without building blockchain integration from scratch. The platform ships SDKs for web JavaScript, iOS, and Android alongside a full REST API, hosted checkout page, and embeddable iFrame widget. Wallet-as-a-Service provisions one multi-chain wallet per end-user using MPC to split signing authority across encrypted key shares, eliminating seed-phrase vulnerabilities and supporting deposits, withdrawals, internal transfers, asset swaps, and mass payouts through a single integration point. The Agentic Payments layer targets AI developers specifically: an MCP Server integration lets LLM agents trigger payment operations natively, and x402 protocol support enables HTTP-native micropayments between autonomous software agents. Controlled agent wallets allow developers to set spend limits and approval conditions on AI-managed funds. CPAY operates across eight blockchains including Solana, so Solana builders can integrate the SDK for payment and wallet needs without building custom blockchain processing in-house.

Squid Router offers a prebuilt widget, a language-agnostic API, and JavaScript/TypeScript SDK that embed cross-chain swap functionality into any application with minimal engineering effort. All three access the same routing engine spanning 100-plus blockchains and over 20,000 tokens, with teams choosing based on UI ownership rather than capability. This developer-first design has driven adoption into 1,000-plus applications including MetaMask, Ledger, Brave, and Keplr. Notable integrators demonstrate Squid's institutional reach: Blockchain.com deployed it for cross-chain swaps, Ripple uses it to route its RLUSD stablecoin across XRPL, Ethereum, Base, and Optimism, and Google's MiniPay wallet reached 88,000 Squid-powered users in March 2026. The breadth of integrators positions Squid as pick-and-shovel infrastructure for the multi-chain ecosystem rather than a direct consumer product.

Interlace delivers card issuance and banking services through a unified API that businesses integrate without needing direct card network relationships or country-by-country licensing. The white-label API covers Cards as a Service, Wallet as a Service, Banking as a Service, and CryptoConnect as modular components, letting teams select the pieces relevant to their product. Integration to a live card program takes roughly two weeks, abstracting away the compliance and operational complexity that would otherwise take months. The platform targets crypto exchanges, travel platforms, neobanks, and fintech startups that want to offer spending cards without building underlying payment rails. Documentation is hosted at developer.interlace.money, and the API supports white-label customization of card presentation and branding. By mid-2025, more than 12,000 enterprise clients had integrated the platform across more than 180 countries.

Minos Global delivers its crypto services through a microservices-based infrastructure layer accessible via a single unified API, built for financial institutions that need to integrate regulated blockchain capabilities without managing that complexity internally. Clients select from modular components—custody, exchange, order execution, tokenization, and payments—activating only what their licenses and business models require. The architecture removes the need for institutions to independently handle blockchain integrations, key management, or regulatory compliance. The platform natively supports Ethereum, Polygon PoS, and Solana, alongside Circle's USDC and EURC stablecoins, and is accessible across Android, iOS, and Web. On/off-ramp functionality for moving between fiat and crypto is included as a standard feature. For institutional developers building regulated crypto products, Minos Global's API represents a compliance-first, multi-chain toolkit deployable across European and Latin American markets through a single integration point.

Particle Network provides a comprehensive developer SDK suite designed to integrate Universal Accounts into any application in roughly 30 lines of code through the Universal SDK. Additional tools include an Account Abstraction SDK, a Universal Deposit SDK, and Social Login via MPC-TSS (Multi-Party Computation Threshold Signature Scheme), giving developers flexible, production-ready building blocks for cross-chain user onboarding. An AI agent API launched in May 2026 extends these tools to autonomous agents, allowing AI systems to create and manage Universal Accounts programmatically. All contracts are audited by CertiK and OpenZeppelin, with an active bug bounty program reinforcing the security posture of the developer toolkit. Integrations with partners such as Alchemy, Magic, and Circle Gateway further expand the developer ecosystem around Particle Network's infrastructure.

Radom exposes a REST API with webhook event delivery covering payments, deposits, payouts, and refunds, letting merchants integrate crypto acceptance without in-house blockchain engineering. Alongside the API, hosted and embedded checkout variants and no-code payment links are manageable from a single dashboard. A public GitHub organization at github.com/radomnetwork hosts the radom-js TypeScript SDK and radom-contracts-js library with contract ABIs and TypeScript bindings. In August 2024, Radom launched the first crypto payments cartridge for Salesforce Commerce Cloud B2C; a WooCommerce plugin is also available. These integrations give e-commerce and enterprise platforms a ready-made on-ramp to multi-chain crypto payment acceptance. The full stack covers more than ten blockchains, with Solana supported for high-frequency payment scenarios where sub-second finality and minimal transaction costs matter.

Gelato is a full-stack Web3 infrastructure platform that gives developers a single integrated layer for gasless transactions, smart contract automation, smart wallets, and custom L2 rollup deployment. Founded in 2019 and having grown to process more than 1 billion transactions across 100+ chains, Gelato packages complex blockchain orchestration into managed services that teams can wire into consumer and enterprise applications without operating specialized infrastructure themselves. The platform's Turbo Relayer explicitly supports Solana, allowing application developers to offer gasless transaction flows to users without requiring them to hold SOL for fees. At its core, Gelato runs a decentralized network of execution nodes — relayers — that listen for configured conditions, perform computation off-chain, and submit signed transactions on behalf of users. Web3 Functions lets developers configure automation tasks with triggers ranging from time-based schedules to on-chain event listeners, executing TypeScript or Solidity functions for use cases such as liquidation triggers, price feed updates, and protocol rebalancing that contracts cannot handle autonomously. Integration partners including Gemini Wallet, Infinex, Safe, Privy, and ZeroDev illustrate the platform's reach across consumer-facing and institutional developer stacks.

Magic is a wallet-as-a-service (WaaS) platform serving more than 200,000 developers and 18,000 applications across consumer, enterprise, and DeFi deployments. The Embedded Wallet SDK provisions non-custodial wallets through Web2 authentication flows, with private keys secured in AWS Nitro trusted execution environments so users never handle raw key material and Magic itself cannot access it. A Server Wallet API extends the platform to agentic and enterprise use cases, providing programmatic wallets provisioned server-side via JWT-authenticated REST APIs for autonomous on-chain actions such as AI agents, treasury systems, and automated settlement. SDKs span web, iOS, Android, React Native, Python, and Node.js, all delivering 50–100ms latency. Solana is a first-class supported network: the @magic-ext/solana extension automatically derives a Solana address when a user authenticates, with transaction signing handled inside the TEE and submission via @solana/web3.js. With $83 million raised and clients including Polymarket, Mattel, Naver, and Polygon, Magic is one of the most established developer wallet infrastructure providers with active Solana support.

Portal ships client SDKs for iOS, Android, React Native, and web, plus a server-side REST API called the Enclave MPC API, giving developers a complete toolkit for embedding non-custodial wallets and stablecoin payment flows into their applications. The SDK layer handles key generation, signing, transaction construction, and backup flows, and the company advertises that a developer can complete a frontend integration in under a day. Beyond basic wallet management, the platform includes Account Abstraction features for EVM chains such as gas sponsorship, transaction batching, and programmable approval workflows, alongside a Solana Fee Sponsorship module that lets applications absorb on-chain transaction costs on behalf of their users. Portal tooling is designed to abstract away low-level blockchain complexity, giving product teams access to institutional-grade MPC cryptography without requiring end users to manage seed phrases or understand key management.

Venly is a blockchain API platform that gives developers REST endpoints to integrate wallet, NFT, and token functionality without managing private keys or node infrastructure. Developers authenticate with a Client ID and Secret, then create wallets, sign transactions, mint NFTs, and deploy tokens through a unified API across 17 blockchains, including Solana, Ethereum, Polygon, and Arbitrum. Two integration modes—a hosted Wallet Widget and a full Wallet API—let teams choose between quick embeds and white-label builds. On Solana, the API covers wallet creation, SOL and SPL token transfers, and NFT operations through the same endpoints used for EVM chains. Social login via Apple, Google, and email replaces seed phrase onboarding for end users. Unity and Unreal Engine integrations extend the tooling to game developers, and a Zapier connector links it to over 6,000 applications. Audits by Least Authority and NonceAudit back the platform's SOC 2 and ISO 27001 certifications.

BlindPay provides an API-first developer platform for embedding stablecoin-to-fiat payment infrastructure into applications without building banking connectivity or compliance stacks from scratch. The REST API handles the full off-ramp workflow — KYC customer creation, funding wallet setup, bank account registration, payout quote generation, and transfer execution — via sequential API calls. Official SDKs are available in Node, Go, Swift, PHP, and Python, and the docs use Solana Devnet as the reference environment for off-ramp tutorials. The platform supports two wallet modes: managed wallets where BlindPay holds keys internally, and external wallets where developers sign delegation transactions directly on-chain. Authentication uses Bearer token API keys with UUID-based idempotency keys on write operations to ensure reliable payment processing. With USDC supported across Solana, Ethereum, Polygon, Arbitrum, Base, Stellar, and Tron, and fiat payouts reaching Pix, SPEI, PSE, ACH, RTP, SWIFT, and SEPA networks, a single API integration covers broad geographic and blockchain coverage. BlindPay targets developers building Solana-native applications that need off-ramp access to LatAm banking rails or global SWIFT connectivity through one consolidated interface.

Butter Network exposes an Omnichain Messaging API for developers building cross-chain applications, with three message types — MESSAGE, CALLDATA, and MESSAGE with Relay — and a TypeScript SDK available through the project GitHub. Separate mainnet and testnet endpoints support development and production deployments across the 20-plus connected blockchains. A dedicated solana-mos-contracts repository provides the MAP Omnichain Service implementation for Solana, enabling developers to integrate with Butter Network cross-chain infrastructure. Developers can deploy an optional Receiver contract on the target chain to route bridged assets into a DEX or execute custom contract logic after verification. The GitHub organization shows active development with hundreds of commits across core router and bridge contracts.

LYNC is a full-stack Web3 developer infrastructure platform providing embedded smart wallets, gas abstraction, and production-ready SDKs across 14+ blockchains including Solana. Teams integrate wallet provisioning, paymaster services, and on-chain transaction handling via a few API calls, without writing custom smart contracts or managing chain-specific complexity. SDK support spans React, Next.js, vanilla JavaScript, iOS, Android, and React Native. LYNC's wallet-as-a-service layer uses account abstraction and MPC key management so users onboard without seed phrases or extensions. A no-code contract deployer handles ERC-721, ERC-1155, and custom token deployments for teams without in-house Solidity or Rust engineers. By its own reported figures, LYNC has reached 500+ integrated projects and 8,000+ contracts deployed, claiming to save teams nine to twelve months of foundational engineering work and over $500,000 in overhead.

Striga provides a single REST API that bundles custody, trading, banking connectivity, and card issuing into one developer-accessible stack. Rather than integrating separate services for SEPA banking, crypto custody, KYC, and card programs, developers building wallets or payment applications use one set of endpoints to cover the full lifecycle of crypto and fiat money movement. The platform creates dedicated cryptocurrency wallets per end user, generates named virtual IBANs, and issues Visa-branded physical and virtual payment cards programmatically. Supported blockchain networks include Solana, Base, Ethereum mainnet, and Polygon, with Bitcoin Lightning Network support for fast low-fee transfers. Over 50 companies have built regulated finance applications and card programs on the platform. Documentation is maintained at docs.striga.com, and the platform continues operating as Lightspark Europe following its 2025 acquisition.

Rampnow is an API-first B2B platform giving developer teams a unified integration layer for fiat-to-crypto on/off-ramp and payment flows across 125+ blockchains including Solana. Integration options include a drop-in Widget Mode, a white-label Hosted Mode, and a JavaScript/TypeScript SDK backed by a RESTful API with OpenAPI spec and webhooks for real-time KYC and transaction events. The SDK and API design is built for professional integration: compliance events such as KYC status changes and payout confirmations surface as webhook callbacks, letting partner applications build programmable compliance flows without a separate portal. Support for 20,000+ tokens, locale-aware payment routing, and MiCA-aligned compliance documentation gives engineering teams the foundation to embed regulated fiat-crypto flows without building money transmitter infrastructure in-house.

Mileston's developer toolkit centers on a TypeScript-first npm package (`mileston-payments`) that exposes three primary classes — PaymentLink, Invoice, and RecurringPayment — each backed by a full set of CRUD operations against Mileston's REST API. A companion package, `mileston-payment-client`, delivers pre-built checkout popup components for React, Angular, Vue, and vanilla JavaScript, managing the full popup lifecycle, callback events, and DOM cleanup without any additional wiring. Authentication is handled via API keys and a business ID, keeping the integration surface familiar to teams already building with traditional payment processors. The result is a stablecoin payment integration that can be wired into an existing application in minutes rather than days. Mileston's SDK architecture is intentionally minimal: the only external dependency in the client package is `axios`, avoiding dependency bloat that can complicate security reviews or build pipelines. The backend abstracts all blockchain complexity — wallet detection, gas estimation, chain-specific transaction signing — so developers interact with a standard HTTP REST interface rather than writing on-chain code. A no-code dashboard is also available for merchants who prefer link generation without coding. Documentation covers integration patterns for payment links, invoices, and recurring billing, with guides written for teams migrating from traditional payment stacks.

Kana Labs Build is the developer-facing arm of the Kana Labs platform, offering SDKs for cross-chain bridging, liquidity aggregation, and account abstraction-based smart wallets. Rather than rebuilding routing and wallet infrastructure from scratch, developers can embed Kana's battle-tested aggregation layer directly into their own applications through documented SDK integrations. The toolkit exposes the same cross-chain routing that powers the consumer trading interface, covering nine blockchains including Solana, Aptos, Ethereum, and major EVM chains. Account abstraction support through the smart wallet SDK enables applications to offer social login and programmable transaction flows without requiring users to manage private keys directly. One of the most operationally significant developer primitives is the Paymaster API, which allows partner applications to offer gasless transactions to their own users by plugging into Kana's gas sponsorship infrastructure. This system has processed over 340 million transactions at the platform level, with close to one million daily sponsored transactions, demonstrating its capacity at production scale. The Kana Labs Build toolkit was formally packaged as a distinct product line by the time of the company's October 2023 seed round, backed by MarbleX, Nexus One, and the Aptos Foundation. Documentation and developer tooling at docs.kanalabs.io remained the active reference for builders even after the company rebranded to Xyra Labs in late 2025.

The Junction API is the company's primary long-term product, exposing swap routing, bridging, perpetual futures, lending vault deposits, staking, and fiat on-ramps through a unified REST endpoint, a GraphQL gateway, and a TypeScript SDK. Any application, wallet, or trading bot can express a DeFi intent — such as "swap X for Y at best rate" or "bridge Z to Arbitrum" — and receive an executable route without implementing individual protocol integrations. The free tier provides 100,000 daily requests and 10 requests per second, with a 0.30% commission per routed transaction applied at the API level. Advisors include Anton Bukov, co-founder of 1inch Network, bringing direct DEX aggregation architecture experience to the platform's API design. Junction extends its developer tooling to AI agents through a Model Context Protocol server using Streamable HTTP. Large language models and autonomous agents can discover capabilities through machine-readable files — /llms.txt, /llms-full.txt, /.well-known/agent.json, and /.well-known/ai-plugin.json — and authenticate with Bearer tokens or OAuth 2.0. This design reflects a thesis that as AI agents increasingly manage on-chain tasks, a single unified DeFi API with standardized authentication is more practical than a patchwork of protocol-specific integrations. Junction is one of the few DeFi platforms to invest in MCP infrastructure and machine-readable API discovery as a first-class design goal rather than a retrofit.

AhoraCrypto provides a developer-facing integration layer built around an embeddable white-label widget and a REST API. The widget deploys in three lines of code, supports full customisation of colours, fonts, logos, and dark mode, and ships with built-in KYC, payment processing, and order tracking. A React SDK alongside JavaScript and Python SDKs are available, with API documentation published via GitBook. The platform advertises a five-minute widget integration time and quotes a 99.9% uptime SLA for business partners. The REST API supports custom user flows, price estimation for fiat-to-crypto and crypto-to-fiat pairs, payment intent creation, and payment status tracking. Real-time price streams are available via WebSocket, and webhook notifications cover order lifecycle events. Business partners receive a real-time analytics dashboard with conversion metrics, transaction monitoring, a dedicated account manager, and a priority Slack channel with custom volume-based pricing. Because the widget runs under AhoraCrypto's MiCA CASP licence, developer teams targeting European users can embed regulated fiat on/off-ramp functionality for Solana and other chains without building or licensing their own compliance infrastructure.

Cregis delivers a Wallet-as-a-Service layer with a RESTful API and SDKs in Java, Go, PHP, and C# for embedding multi-chain wallet functionality across more than 40 blockchain networks. The API handles the full address lifecycle from address creation and deposit detection via asynchronous callbacks through payout orchestration. An open-source anychain-solana Rust library on GitHub adds Solana-specific wallet operations and transaction construction as composable building blocks that other development teams can examine and extend. The underlying MPC security layer distributes private key shards across multiple devices and Trusted Execution Environments using the GG18 protocol. Hardware Security Modules meeting FIPS 140 standards add hardware isolation, and a Sign What You See policy prevents blind-signing attacks in automated transaction flows. Developers integrating through the WaaS API inherit this institutional-grade security framework and can configure M-of-N signing thresholds without building custody infrastructure from scratch.

Eco provides developers with a permissionless SDK and composable infrastructure primitives that abstract away the complexity of cross-chain stablecoin flows. Instead of building chain-specific bridge integrations, a Solana application can integrate Eco's SDK, expose a Programmable Address, and accept deposits originating from Ethereum L2s, Base, or Arbitrum without touching bridge contracts or managing gas on multiple networks. The protocol's non-custodial design — non-upgradable Portal smart contracts, deterministic CREATE2 vaults per intent, and a stateless Executor — gives developers security guarantees without custodial dependencies. Six interchangeable cross-chain messaging options give the prover layer flexibility across different chain pairs, making the SDK adaptable as new chains are added to Eco's coverage.

xLabs has contributed two developer-facing SDKs to the multi-chain ecosystem. Wormhole Connect lets dapp builders embed cross-chain bridging directly in their interfaces, abstracting Wormhole's message-passing mechanism into a straightforward integration surface. The Wallet Aggregator SDK is a separate open-source tool that helps dapp developers connect to popular wallets across multiple blockchains through a single unified API. Circle recognizes xLabs as a Bridge SDK provider in its Alliance Directory, underscoring its role in making cross-chain USDC transfers accessible to builders through developer tooling. These SDK contributions sit alongside xLabs' operational infrastructure work spanning Guardian nodes, the CCTP Relayer network, and Portal Bridge. The Wormhole Foundation awarded xLabs its first Core Developer Grant in September 2023, recognizing cumulative contributions that span both developer tooling and production infrastructure.