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LI.FI Intent / Solver Marketplace helps wallets and applications execute same-chain and cross-chain token transfers through a solver network. Solvers publish standing quotes (price curves for routes and amount ranges), and the order server matches intents to available solver inventory.
LI.FI Intent/Solver Marketplace is the official foundation of the Open Intents Framework (OIF), an open-source initiative led by the Ethereum Foundation for permissionless interoperability.

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What You Get as an Integrator

  • Competitive pricing. Intents are matched against solver standing quotes and routed to the best available fill path.
  • Fast settlement. Solvers use their own capital to deliver assets on the destination chain before settlement completes.
  • Same-chain and cross-chain support. Route availability updates continuously based on active solver inventory.
  • Optional gasless order submission. Off-chain order submission is gasless, while funding actions (approval/deposit into Escrow or Compact) are still on-chain transactions.
  • Calls on delivery. Attach calldata to intents for custom logic after asset delivery.

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How It Works

  1. User expresses an intent. The user deposits tokens into an input settler (escrow or Compact resource lock), then defines the desired output outcome without specifying execution details.
  2. Intent is distributed. The lock generates a proof of deposit, which is broadcast to the order server and solver network.
  3. Intent is matched. The order server matches the intent against existing solver quotes (standing inventory), not live per-intent RFQ bidding.
  4. Solver delivers. The winning solver delivers the requested assets on the destination chain.
  5. Verification and settlement. The output settler records the fill and generates attestations; the oracle/input settler verifies delivery and releases locked funds.
LI.FI Intent Lifecycle Diagram

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Supported Chains

Same-chain intents are live across all supported chains. Coverage includes major pairs and a broad long-tail token set (including Ondo assets). For the most up-to-date chain support, call GET /chains/supported. Testnet chains are also available on the same endpoint.

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Supported Routes

Route availability updates continuously based on active solver quoting. For the full route list including token-level detail, call GET /routes.

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Authentication

Integrator endpoints are fully open with no API key or rate limits. Solvers must register for an API key via the solver UI. See Authentication for details.

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Key Concepts

For full definitions, see the Glossary.

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Next Steps

Quickstart

Request a quote, submit an order, and track it in under 5 minutes

Intents API Overview

Endpoints, base URLs, authentication, and order lifecycle

Solver API

Solver endpoints, quoting, and filling orders

System Architecture

Settlers, oracles, and contract addresses