Authentication

The LI.FI Intents API has two access levels: open integrator endpoints and authenticated solver endpoints.

Integrators

Integrator endpoints are fully open. No API key, no registration, and generous rate limits. You can start building immediately.

Endpoints

Method	Path	Description
`POST`	`/api/v1/integrator/quote/request`	Request a quote for an intent (all chains)
`GET`	`/api/v1/integrator/routes`	Discover active routes (CAIP-2)
`GET`	`/orders`	List orders with optional filters
`GET`	`/orders/status`	Get order status
`GET`	`/chains/supported`	Get the list of supported chains
`POST`	`/orders/submit`	Submit an off-chain order (gasless / Compact, EVM only)

Solvers (API Key Required)

Solver endpoints require an API key passed via the x-api-key header. Use these endpoints to submit quotes, manage solver accounts, and track reputation.

Method	Path	Description
`POST`	`/quotes/submit`	Submit or update up to 200K solver quotes
`GET`	`/solver-api/quotes`	Get solver’s uploaded quote inventory
`GET`	`/solver-api/solver/identities`	Get solver identities for reputation tracking
`GET`	`/api/v1/solver/register/message`	Get a one-time registration message to sign
`POST`	`/api/v1/solver/register`	Register a solver account (EVM ECDSA, EIP-1271, Solana ed25519)
`POST`	`/api/v1/solver/unregister`	Unregister a solver account
`GET`/`PUT`	`/api/v1/solver/supported-contracts`	Read or replace the list of oracle and settler contracts your solver supports
`POST`	`/solver-api/account/register`	Legacy V0 account registration (EVM signatures only)
`POST`	`/solver-api/account/unregister`	Legacy V0 account removal
`GET`	`/api/v1/solver/reliability`	Get your current status, active pauses and trials, and miss counts
`GET`	`/api/v1/solver/reliability/pauses`	List your pause history

Authenticating Requests

Pass your API key in the x-api-key header:

curl -X POST 'https://order.li.fi/quotes/submit' \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: YOUR_SOLVER_API_KEY' \
  -d '{ ... }'

Getting an API Key

Environment	Solver UI	API Base URL
Production	intents.li.fi	`https://order.li.fi`
Testnet	devintents.li.fi	`https://order-dev.li.fi`

We recommend starting on testnet to validate your integration before going live.

Environments

Environment	Base URL	Use
Production	`https://order.li.fi`	Live orders with real assets
Development	`https://order-dev.li.fi`	Testnet orders (Sepolia, Base Sepolia, etc.)

Interactive API documentation is available at /docs on both environments.

Next Steps

Quickstart

End-to-end escrow flow for integrators

Intents API Overview

Integrator endpoints, order lifecycle, and address encoding

Solver API Overview

Solver endpoints, quoting, and account management

Getting Started

Intents API

Solver API

MCP Server

Architecture

Knowledge Base

Authentication

Integrators

Endpoints

Solvers (API Key Required)

Authenticating Requests

Getting an API Key

Environments

Next Steps

Quickstart

Intents API Overview

Solver API Overview

​Integrators

​Endpoints

​Solvers (API Key Required)

​Authenticating Requests

​Getting an API Key

​Environments

​Next Steps

Quickstart

Intents API Overview

Solver API Overview

Integrators

Endpoints

Solvers (API Key Required)

Authenticating Requests

Getting an API Key

Environments

Next Steps