1inch

1inch is a decentralized exchange aggregator that splits and routes token swaps across multiple liquidity sources to secure the best available price, now operating on 13+ chains including Solana.

Origins and Team

1inch was born at a New York hackathon in May 2019, when software engineers Sergej Kunz and Anton Bukov built a DEX aggregator MVP in a weekend. The two had spent years running "CryptoManiacs," a YouTube channel dedicated to live smart-contract security audits, uncovering bugs and backdoors across dozens of DeFi protocols before ever launching a product of their own. That security-first orientation has shaped the platform ever since. They officially incorporated 1inch Network in September 2020, shortly after completing $2.8 million in seed funding, and expanded into a globally distributed team thereafter.

Core Mechanism: Pathfinder and Fusion

Two complementary systems power 1inch's swap execution.

Pathfinder is the routing algorithm that splits a single swap order across multiple DEXes simultaneously, finding the combination of routes that minimizes slippage and fees. When a user wants to swap Token A for Token B, Pathfinder scans available liquidity across supported protocols in real time, calculates the optimal split, and executes through whichever combination delivers the best net output. This is the traditional aggregator model: the user signs the transaction, and smart contracts handle the routing.

Fusion is an intent-based layer on top of Pathfinder. Instead of a user broadcasting a transaction directly, they sign a swap intent that is submitted to a network of professional market makers called resolvers. Resolvers compete to fill the order, covering gas costs in the process. The result is gasless swaps for users—no ETH or SOL needed to pay transaction fees—and tighter fills, because resolvers have incentives to source the best prices across both on-chain and off-chain liquidity. Median execution time for Fusion orders was cut from 26 seconds to 14 seconds following the March 2025 "Trade Mode" UI update. A dedicated Solana Fusion SDK gives developers the same capability on Solana.

Solana Expansion

1inch launched on Solana in late April 2025, citing the network's scale—$539 billion in DEX trading volume and five billion transactions over the prior three months—as the strategic rationale. The Solana integration brought MEV protection for over one million tokens and the full Fusion protocol to the ecosystem, meaning Solana users get gasless swaps and resolver-driven execution, not just basic aggregation.

The timing proved well-chosen: 1inch's global DEX aggregator market share climbed from 32% in March 2025 to 60% in May 2025, capturing $31.5 billion of $52 billion in total aggregator volume, with the Solana launch credited as the primary catalyst. Cross-chain swaps connecting Solana to ten additional blockchains are on the product roadmap, which would position Solana as a routing hub for multi-chain users rather than a silo.

Aqua: Shared Liquidity AMM

In Q4 2025, 1inch launched Aqua, a concentrated liquidity AMM that introduces a structural departure from standard pool mechanics. Traditional AMMs lock LP capital in a single pool with a fixed strategy. Aqua instead maintains a shared liquidity layer: LPs allocate a virtual balance once, and that balance can be deployed across multiple trading strategies simultaneously without requiring separate token approvals for each.

Liquidity providers choose between two position shapes. "Straight" concentrates capital within a defined price band and only quotes while the pair trades inside that range—suited for volatile pairs where LPs want precise exposure. "Curved" spreads liquidity smoothly across a range of prices, which works better for stable or pegged-asset pairs where the price rarely leaves a narrow corridor. Both shapes draw from the same underlying capital allocation.

Aqua reached $100 million in swap volume within its first 17 days of operation (by mid-August 2026). A governance proposal earmarked 10 million 1INCH tokens and 500,000 USDC in DAO incentives to support early adoption.

Product Suite

Beyond the core swap interface, 1inch has built several adjacent products:

• 1inch Wallet — a mobile wallet with built-in swap access, token tracking, and DeFi portfolio views
• 1inch Portfolio — analytics for tracking holdings and DeFi positions across chains
• 1inch Card — a crypto payment card with Apple Pay and Google Pay integration
• 1inch Business — a developer API suite covering swaps, order books, token pricing, balances, and cross-chain operations across 16+ networks; pay-per-call billing is now available via the x402 protocol (USDC on Base, starting at $0.00018 per call)

Security

1inch's founders brought security auditing experience into the product from day one. The platform builds MEV protection directly into swap routing so that orders are not front-run by bots. The 1inch Wallet performs wallet screening through integrations with ZeroShadow and TRM Labs, flagging scam tokens and malicious contracts before users interact with them. In August 2026, 1inch joined the SEAL Whitehat Safe Harbor Agreement, enabling ethical security researchers to assist the protocol when vulnerabilities are discovered without fear of legal liability.

1INCH Token

The 1INCH token is the governance and utility token for the 1inch ecosystem. Token holders vote on protocol parameters, fee distribution, and treasury allocations through the 1inch DAO. Governance decisions have included deploying portions of the DAO treasury into yield-bearing positions on Aave and approving the Aqua incentive program. The token is the mechanism through which the decentralized community shapes protocol direction across all supported chains.

Ecosystem Position on Solana

1inch is not Solana-native: Jupiter remains the dominant aggregator on the network and benefits from deep integration with Solana's liquidity infrastructure built over years. 1inch's competitive angle on Solana is cross-chain coverage—the ability to bridge swap flow between Solana and EVM chains through the same interface and API used elsewhere. For teams building multi-chain applications, 1inch Business offers Solana as one of 16+ supported networks under a single developer integration. For end users, the main draw is the Fusion protocol's gasless execution and MEV protection, features that are not yet table stakes in the Solana aggregator market.

Cumulative platform metrics across all chains stand at $811 billion in total swap volume, 264 million swaps executed, and 27 million wallets connected—a scale that gives 1inch's routing algorithms a meaningful data advantage in estimating real-time liquidity depth.