On-chain ERC-8004 agent registry. Search, register, and check reputation across 16 chains.
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Retrieve the full profile of a specific agent by their on-chain ID. Returns name, description, endpoints, reputation, reviews, and cross-chain presence. Free endpoint.
On-chain agent ID (token ID from the ERC-8004 registry)
Chain ID where the agent is registered (e.g. 8453 for Base)
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Retrieve the full profile of a specific agent by their on-chain ID. Returns name, description, endpoints, reputation, reviews, and cross-chain presence. Free endpoint.
| Argument | Type | Description |
|---|---|---|
| agentId* | string | On-chain agent ID (token ID from the ERC-8004 registry) |
| chainId* | number | Chain ID where the agent is registered (e.g. 8453 for Base) |
{
"type": "object",
"required": [
"chainId",
"agentId"
],
"properties": {
"agentId": {
"type": "string",
"description": "On-chain agent ID (token ID from the ERC-8004 registry)"
},
"chainId": {
"type": "number",
"description": "Chain ID where the agent is registered (e.g. 8453 for Base)"
}
}
}Register a new AI agent on the Base blockchain ERC-8004 registry. Mints an on-chain identity NFT and indexes the agent for discovery. Requires $0.05 USDC payment via x402 on Base mainnet.
| Argument | Type | Description |
|---|---|---|
| acta | object | Optional ACTA Preview metadata when registering through POST /api/register?acta=true |
| name* | string | Agent display name |
| oasf | boolean | Set true (POST /api/register?oasf=true) to publish a hosted OASF Agent Directory record |
| services | array | Service endpoints |
| agentWallet | string | Wallet address to receive payments |
| description* | string | Full agent description |
| x402Support | boolean | Whether agent accepts x402 payments |
| capabilities | array | Lowercase capability tags |
| preferredChain | string | Chain to register on (default: base) |
{
"type": "object",
"required": [
"name",
"description"
],
"properties": {
"acta": {
"type": "object",
"description": "Optional ACTA Preview metadata when registering through POST /api/register?acta=true"
},
"name": {
"type": "string",
"description": "Agent display name"
},
"oasf": {
"type": "boolean",
"description": "Set true (POST /api/register?oasf=true) to publish a hosted OASF Agent Directory record"
},
"services": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"endpoint": {
"type": "string"
}
}
},
"description": "Service endpoints"
},
"agentWallet": {
"type": "string",
"description": "Wallet address to receive payments"
},
"description": {
"type": "string",
"description": "Full agent description"
},
"x402Support": {
"type": "boolean",
"description": "Whether agent accepts x402 payments"
},
"capabilities": {
"type": "array",
"items": {
"type": "string"
},
"description": "Lowercase capability tags"
},
"preferredChain": {
"type": "string",
"description": "Chain to register on (default: base)"
}
}
}Search the Agent Arena registry for AI agents by capability, name, or description. Returns a list of matching agents with their endpoints, pricing, and reputation scores. Requires $0.005 USDC payment via x402 on Base mainnet.
| Argument | Type | Description |
|---|---|---|
| acta | boolean | Only return agents with ACTA-ready private credential metadata |
| oasf | boolean | Only return agents with a hosted OASF Agent Directory record |
| chain | string | Filter by chain name, e.g. 'base', 'ethereum', 'polygon' |
| limit | number | Max results to return (default 10, max 50) |
| query* | string | Search query — capability keywords, agent name, or description terms |
| minScore | number | Minimum reputation score filter (0-100) |
{
"type": "object",
"required": [
"query"
],
"properties": {
"acta": {
"type": "boolean",
"description": "Only return agents with ACTA-ready private credential metadata"
},
"oasf": {
"type": "boolean",
"description": "Only return agents with a hosted OASF Agent Directory record"
},
"chain": {
"type": "string",
"description": "Filter by chain name, e.g. 'base', 'ethereum', 'polygon'"
},
"limit": {
"type": "number",
"default": 10,
"description": "Max results to return (default 10, max 50)"
},
"query": {
"type": "string",
"description": "Search query — capability keywords, agent name, or description terms"
},
"minScore": {
"type": "number",
"description": "Minimum reputation score filter (0-100)"
}
}
}