Exchain developer docs
Authorize every agent payment.Prove every decision.
Exchain co-signs an AI agent's payment only when it fits the owner's mandate.
curl https://cosign.exchain.network/openapi.yamlThese docs show how to put an agent's wallet under Exchain's authorization, set its mandate, co-sign its payments, and verify every decision in the public journal. Start with what Exchain is, or go straight to your first co-signed payment.
What is Exchain
The independent authorization seat beside an agent's wallet.
Quickstart
Register a guarded wallet and co-sign your first payment.
Cosign
Guard agent payments with a mandate and the attested quorum's co-signature.
x402
Guard x402 and direct payments from a Safe on Base, Ethereum, Arbitrum, Optimism or Polygon.
Verification and security
Who holds which key, and how to check any decision yourself.
API
Every endpoint, with a request playground.
- Latest publicationThe journal publishes a new signed batch of decisions every hour; this is its number.
- 07:00 UTCrun #1,279
- WalletsGuarded wallets with published decisions.
- 35
- DecisionsAll published co-sign decisions, with refusals.
- 59895 refused
- AnchoredThe last day the journal's root was written to Cardano mainnet.
- 8 NovCardano mainnet ↗
- Journal rootThe Merkle root that fixes every decision in this publication.
9c8e14…403cbjournal ↗
Building on Masumi? Start with Masumi nodes.