---
title: "AgentStamp"
slug: "agentstamp"
status: "active"
last_checked: "2026-07-05"
categories:
  - "identity"
---

# AgentStamp

AgentStamp issues signed identity certificates and reputation scores for AI agents.

- Status: active
- URL: https://agentstamp.org/
- Last checked: 2026-07-05
- Freshness: 1 days
- Founded: not published
- Funding: not published

## Offerings

### Identity

- Offering status: live
- What you get: 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.
- Acquisition: self_serve
- Geographies: not published
- 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.
- Pricing URL: not published
- API: yes
- SDK: yes
- MCP: yes
- Standards: not published

| Field | Value |
| --- | --- |
| credential_type | Ed25519-signed stamp, exportable as W3C Verifiable Credential or A2A passport |
| who_accepts | 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 |

## Sources

- https://agentstamp.org/
- https://github.com/vinaybhosle/agentstamp