AgentStamp
AgentStamp issues signed identity certificates and reputation scores for AI agents.
Identity and trustLive
Agents get an Ed25519-signed identity certificate (Bronze, Silver, or Gold tier) plus a 0-100 reputation score, with the option to export the credential as a W3C Verifiable Credential or an A2A-compatible passport.
- Credential type
- Ed25519-signed stamp, exportable as W3C Verifiable Credential or A2A passport
- Who accepts it
- not published
- Delegation model
- not published
- Revocation
- not published
- Reputation model
- 0-100 score combining self-reported and independently verified trust signals, with peer vouching from established agents capped at 20 points per single-hop endorsement
- Integration
- API, SDK, MCP
- Pricing
- Stamps cost $0.001 (Bronze, 24-hour validity), $0.005 (Silver, 7-day validity), or $0.01 (Gold, 30-day validity), paid via x402 USDC micropayments on Base or Solana. Registry listing costs $0.01. Verification and lookup are free.