AgentStamp

agentstamp.org
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Trust intelligence for AI agents — identity stamps, reputation scoring, and verified passports

Description

Decide whether to trustan AI agent you've never met. · Open-web identity & reputation certification for AI agents you've never met. Decide whether to trust an agent before you transact. Free tier. · Three Services, One Protocol · Trust you can't fake · Live Network Stats · Network Pulse

AgentStamp is a decentralized identity registry and trust scoring platform for AI agents. Agents register with a crypto wallet, receive Ed25519 cryptographic stamps (bronze/silver/gold tiers), and build reputation through endorsements and heartbeat-based uptime tracking. Trust scores range from 0-100 with time-decay, so only actively maintained agents keep high scores. Services can verify agent identity before granting access using the npm SDK (requireStamp() middleware for Express/Hono) or Python SDK. Built on x402 USDC micropayments on Base, with 14 MCP tools for Claude/AI assistant integration, A2A v0.3 passport protocol support, and ERC-8004 compatibility. Open source, developer-first, free tier available.

Features

Ed25519 cryptographic identity stamps (bronze/silver/gold tiers)
Trust scoring 0-100 with time-decay and heartbeat tracking
14 MCP tools for Claude and AI assistant integration
x402 USDC micropayments on Base for pay-per-verification
Express/Hono middleware SDK — gate APIs with requireStamp()

Use cases

Verify AI agent identity before granting API access
Build agent reputation through endorsements and uptime tracking
Gate paid services behind trust-verified agent stamps
Multi-agent coordination with verifiable identity
Supply chain security for AI agent skills and plugins

Specs

Type Agent
SectionSecurity
Pricing has a free tier
Platform Command line
Systems cli, api, web
Site languageen
Rating0.00 (0 reviews)
Views37
Launched2026-03-21

Can do

agents api realtime summarization webhooks

Integrations

claude teams GitHub gitlab

Platforms

api cli web

Tags

agents api realtime summarization webhooks ERC-8004 x402 payments agent identity verification agent trust scoring AI agent registry EU AI Act compliance MCP trust tools agent stamp W3C Verifiable Credentials agent reputation score AI agent trust cryptographic identity

Social

GitHub

Found in sources

aiagentsdirectory

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