Solana to Base bridge API for AI agents

AssetFare is a capped, non-custodial route from Solana SOL to Base ETH. Agents can inspect and use it directly through REST and OpenAPI without installing MCP. A Streamable HTTP MCP server remains available as an optional compatibility adapter.

Safety: AssetFare never receives a private key and never signs or submits a transaction. The calling agent independently verifies, signs, and submits every action.

Use the API

Read OpenAPI, the APIs.json discovery index, the read-only Arazzo evaluation workflow, the full agent guide, current status, and the signed manifest.

POST https://api.assetfare.dev/v1/quote
{"from_chain":"solana","from_token":"SOL","to_chain":"base","to_token":"ETH","amount_usd":300}

Optional MCP adapter

MCP is not required. Hosts that already use MCP may connect a Streamable HTTP client to https://api.assetfare.dev/mcp, or discover the remote server as io.github.odaiin/assetfare in the official MCP Registry.

What an agent verifies

Supported corridor and $250–$1,000 caps.
Fee-inclusive expected and conservative minimum output, expiry, and ETA.
Two independent Solana RPC provider families.
Exact source signer, minimum output, allowed programs, Base executor code hash, fee, recipient, and deadline.
Workflow state and asset location after every submitted caller transaction.

Mainnet evidence

Read the current-release $250 canary evidence. It includes source, CCTP, and Base settlement transaction hashes, observed fee, and zero-allowance result. Then request a live same-input quote comparison.