HashProof
Share / Embed
Reputation
formula v1.3Signals
Verifiable credentials API on Celo and Base. Issue trusted digital certificates with one API call for $0.10 USDC via x402 — no account, no API key. Each credential is registered on-chain in the CredentialRegistry contract on Celo (0x7a1B759A602Aba72a70f99Dffd0a386d7504ce9B), pinned to IPFS, and comes with a PDF with a QR code anyone can scan to verify for free against three independent sources. Agent-usable end to end: discover required fields at GET /templates/:ref/requirements (free), then POST /issueCredential paying x402 with USDC on Base (eip155:8453) or Celo (eip155:42220). Full agent guide at https://hashproof.dev/skill.md.
Source: https://www.hashproof.dev/metadata.json
Raw metadata
{
"name": "HashProof",
"type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
"image": "https://www.hashproof.dev/hashproof-favicon.png",
"active": true,
"services": [
{
"name": "web",
"endpoint": "https://hashproof.dev"
},
{
"name": "x402-issue-credential",
"version": "x402-v2",
"endpoint": "https://api.hashproof.dev/issueCredential"
},
{
"name": "MCP",
"version": "2025-06-18",
"endpoint": "https://api.hashproof.dev/mcp"
},
{
"name": "skill",
"endpoint": "https://hashproof.dev/skill.md"
},
{
"name": "agentWallet",
"endpoint": "eip155:42220:0x0a25C91209a158D0a4922837cdd590aCe0D13f0d"
},
{
"name": "OASF",
"skills": [
"tool_interaction/workflow_automation",
"tool_interaction/api_schema_understanding",
"science_and_specialized_domains/blockchain_and_web3"
],
"domains": [
"technology/blockchain"
],
"version": "0.8.0",
"endpoint": "https://api.hashproof.dev/"
}
],
"updatedAt": 1785196800,
"description": "Verifiable credentials API on Celo and Base. Issue trusted digital certificates with one API call for $0.10 USDC via x402 — no account, no API key. Each credential is registered on-chain in the CredentialRegistry contract on Celo (0x7a1B759A602Aba72a70f99Dffd0a386d7504ce9B), pinned to IPFS, and comes with a PDF with a QR code anyone can scan to verify for free against three independent sources. Agent-usable end to end: discover required fields at GET /templates/:ref/requirements (free), then POST /issueCredential paying x402 with USDC on Base (eip155:8453) or Celo (eip155:42220). Full agent guide at https://hashproof.dev/skill.md.",
"x402Support": true,
"registrations": [
{
"agentId": 1867,
"agentRegistry": "eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
},
{
"agentId": 9669,
"agentRegistry": "eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
}
],
"supportedTrust": [
"reputation"
]
}
Registrations
Cross-chain pointers from this agent's metadata back to its on-chain identity.
| Chain | Registry | Agent ID |
|---|---|---|
| Celo Mainnet | 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432 | 1867 |
| Celo Mainnet | 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432 | 9669 |
Services
-
webEndpoint
https://hashproof.dev -
x402-issue-credential vx402-v2Endpoint
https://api.hashproof.dev/issueCredential -
MCP v2025-06-18Endpoint
https://api.hashproof.dev/mcp -
skillEndpoint
https://hashproof.dev/skill.md -
agentWalletEndpoint
eip155:42220:0x0a25C91209a158D0a4922837cdd590aCe0D13f0d -
OASF v0.8.0Endpoint
https://api.hashproof.dev/Skills tool_interaction/workflow_automation tool_interaction/api_schema_understanding science_and_specialized_domains/blockchain_and_web3