# Relay Contract Migration Guide

## What's Changing

On **February 3, 2026 at Noon ET**, the `/quote` endpoint will route through updated Relay contracts.

## Do I Need to Do Anything?

**For most integrations no action is needed.** Your integration will continue working automatically.

**Action required only if:**
- You've whitelisted Relay contract addresses
- You've whitelisted specific solver addresses

## Timeline

- **Feb 3, 2026**: `/quote` routes through new contracts by default
- **Mar 1, 2026**: Legacy contracts fully deprecated

## How to Update (if needed)

### Update contract allowlists
Add new contract addresses to your allowlists. Get addresses from the [chains API](https://docs.relay.link/references/api/chains).

### Use the updated endpoint

POST /quote/v2

Same parameters as before. API response includes correct calldata for the updated flow.

## Stay on Legacy Contracts Temporarily

If you need more time, add this to your `/quote` requests:

{
  "protocolVersion": "v1"
}

**Note:** Legacy contracts will be deprecated March 1, 2026.

## Questions?

Contact [e-mail] or check the [documentation](https://docs.relay.link/references/protocol/overview).