# Aegis ERC-8004 Reputation Lookup

> Aegis ERC-8004 Reputation Lookup is a paid API for AI agents from aegis.borisinc.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Looks up the trust score, reputation metrics, and verified services for an ERC-8004 agent or domain in the x402 agent economy

## Facts

- Endpoint: GET https://aegis.borisinc.com/erc8004/reputation
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aegis-erc-8004-reputation-lookup-3bbf04cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t2iBHvA8ujdyY9CPFa1vK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability aegis-erc-8004-reputation-lookup-3bbf04cf
```

Example prompt: Before I pay that x402 service at api.example.com, can you check its Aegis trust score and reputation — I want to know if it's verified, what tier it's at, and whether its on-chain rating matches what it claims?

## When to prefer this

Use this endpoint when an AI agent needs to vet an x402-payable service or ERC-8004 agent before routing a payment or integrating it into a workflow. It is the canonical trust layer for the x402 ecosystem, backed by real on-chain purchase history and star ratings. Prefer this over generic reputation APIs when the entity is an x402/ERC-8004 agent on Base, or when you need to detect divergence between claimed and verified reputation.

## Known failure modes

- Agent or domain not found — 'found: false' with empty reputation fields
- Invalid or non-existent agent_id returns empty or null result
- Domain not yet registered in Aegis registry returns no verified services
- Divergence flag raised when on-chain avg_starred and aegis_trust_score differ significantly
- Network or payment failure on the x402 micropayment layer

## How this service works

Search 2,400+ x402 services ranked by delivery-verified trust. Free discovery, paid trust checks, payment routing with failover. We buy from sellers to prove they deliver.

## Output

Returns a JSON object with the agent's name, ERC-8004 agent_id, found status, reputation metrics (avg_starred, feedback_count, distinct_clients), a list of Aegis-verified service URLs with their trust scores and tiers (provisional/full), and a divergence block flagging any gap between the self-reported on-chain average and the Aegis-computed trust score.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "domain": {
       "type": "string",
       "description": "or an endpoint domain"
      },
      "agent_id": {
       "type": "integer",
       "description": "ERC-8004 agentId on Base"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "Silverback",
  "found": true,
  "agent_id": 1156,
  "divergence": {
   "flag": true,
   "delta": 50.7,
   "aegis_trust_score": 39.3,
   "onchain_avg_starred": 90
  },
  "reputation": {
   "avg_starred": 90,
   "feedback_count": 22,
   "distinct_clients": 7
  },
  "aegis_verified_services": [
   {
    "url": "https://api.example.com/x402",
    "tier": "provisional",
    "trust_score": 39.3
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aegis-erc-8004-reputation-lookup-3bbf04cf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aegis.borisinc.com](https://www.zero.xyz/host/aegis.borisinc.com/llms.txt)