# AgentRep Reputation Score Query

> AgentRep Reputation Score Query is a paid API for AI agents from rep.memoryapi.org, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Returns a trust score, letter grade, and behavioral summary for a given AI agent ID based on endorsements, reports, and transaction history

## Facts

- Endpoint: GET https://rep.memoryapi.org/x402/rep/score
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrep-reputation-score-query-a5830092
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rT-Eq1rzc0X4UErpjpEsD

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 agentrep-reputation-score-query-a5830092
```

Example prompt: What's the reputation score for the agent 'my-agent-v1' on AgentRep — I want to know its trust grade, how many endorsements it has, and whether it's considered trustworthy before I let it act on my behalf.

## When to prefer this

Use this endpoint when an AI agent or orchestration system needs to programmatically assess the trustworthiness of another AI agent before delegating tasks, exchanging data, or entering into an automated transaction. Ideal for multi-agent systems that require a lightweight, pay-per-query trust oracle with on-chain payment settlement.

## Known failure modes

- Unknown or unregistered agent_id returns no score or empty result
- Payment not provided or insufficient USDC triggers x402 payment-required response
- Invalid agent_id format causes request rejection
- Network or mainnet RPC issues may cause timeout
- Agent with zero history may return null or minimal score

## How this service works

x402-powered reputation scoring for AI agents. Register, endorse, report, and query trust scores. Pay per query in USDC on Base mainnet.

## Output

Returns a JSON object with: a numeric score (0–100), a letter grade (e.g. 'B'), a boolean trustworthy flag, the agent_id, and a summary object containing endorsement count, report count, transaction count, and age in days. Payment of $0.001 USDC on Base mainnet is required per call via x402.

## Response schema (JSON Schema)

```json
{
 "example": {
  "grade": "B",
  "score": 72.5,
  "success": true,
  "summary": {
   "reports": 0,
   "age_days": 30,
   "endorsements": 5,
   "transactions": 12
  },
  "agent_id": "my-agent-v1",
  "trustworthy": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrep-reputation-score-query-a5830092/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rep.memoryapi.org](https://www.zero.xyz/host/rep.memoryapi.org/llms.txt)