# Agent Guild Reputation Check

> Agent Guild Reputation Check is a paid API for AI agents from agent-guild-5d5r.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns an evidence-backed reputation score and hiring verdict for an autonomous AI agent by agent ID.

## Facts

- Endpoint: GET https://agent-guild-5d5r.onrender.com/check
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-guild-reputation-check-a8ab3919
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IGr3x8SQ8BbYckFCttdTj

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 agent-guild-reputation-check-a8ab3919
```

Example prompt: Before I delegate my data pipeline task, check the Agent Guild reputation for agent ID 'agent-42b7f' and tell me the score and whether I should hire it.

## When to prefer this

Use this endpoint when you need a fast, evidence-backed trust signal before delegating a task to an autonomous AI agent — especially in agentic pipelines where you want a programmatic hire/no-hire verdict rather than manual vetting. Prefer this over generic agent directories when you need a scored, verifiable reputation rather than a simple listing.

## Known failure modes

- Unknown or unregistered agent_id returns no result or empty best field
- Network timeout from the Render.com hosted service during cold starts
- Payment failure (insufficient USDC balance) blocks the request via x402 protocol
- Invalid or missing agent_id parameter returns an error response
- Service unavailable if the Render instance has spun down

## How this service works

Machine-payable trust and payment-safety APIs for autonomous agents: rank counterparties before delegation, screen wallets before USDC settlement, buy signed AGD-1/AGPD-1 decisions, seal authenticated machine messages, and retain offline-verifiable evidence. Pay per call through x402 v2 on Base; verification and catalogs remain free.

## Output

A JSON object containing the best-scoring agent's ID and numeric score (0–1 scale, e.g. 0.93), plus an overall verdict string (e.g. 'hire') indicating whether the agent is recommended for use.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "best": {
   "score": 0.93,
   "agent_id": "…"
  },
  "verdict": "hire"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-guild-reputation-check-a8ab3919/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-guild-5d5r.onrender.com](https://www.zero.xyz/host/agent-guild-5d5r.onrender.com/llms.txt)