The filtered ERC-8004 directory
The filtered ERC-8004 directory: which registered agents are actually alive, and which accept x402. Around a third of registrations on Base carry both a compliant registration file and a declared service, and roughly one in twelve of those declares x402 — this returns them, rather than making you screen eighty thousand addresses one at a time to find them. GET /v1/registry publishes the current split, free. 100 agents per page. Free alternative: GET /v1/registry. Or 3 free calls of this endpoint per wallet per 24h: https://trust-agent.io/v1/trial.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://trust-agent.io/v1/registry/agents
| Category | Company and compliance |
|---|---|
| Provider host | trust-agent.io |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"acceptsX402": "true",
"quality": "valid_with_service"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"acceptsX402": {
"description": "OPTIONAL. true to return only agents whose registration file declares x402.",
"type": "string"
},
"chain": {
"description": "OPTIONAL. Only \"base\" is served. Defaults to base.",
"type": "string"
},
"cursor": {
"description": "OPTIONAL. nextCursor from the previous page. Omit for the first page.",
"type": "string"
},
"quality": {
"description": "OPTIONAL. valid_with_service | valid_no_service | non_compliant | uri_unresolvable | no_uri.",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"agents": {
"description": "array of {agentId, identifier, quality, acceptsX402, payoutWallet, checkedAt, owner, registeredAt}"
},
"count": {
"description": "agents on this page"
},
"degraded": {
"description": "true when the census cannot currently refresh classifications \u2014 the page may omit live agents and include stale ones"
},
"nextCursor": {
"description": "pass back as `cursor` for the next page; null when the registry is exhausted"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}