# Mercury Trust Identity Check

> Mercury Trust Identity Check is a paid API for AI agents from merc-trust.vercel.app, paid per call via x402, $0.005/call, status down (last checked 2026-09-14).

Performs a trust and identity verification check on an agent or entity for use in agent handoffs, delegation, and provenance triage

## Facts

- Endpoint: POST https://merc-trust.vercel.app/api/trust/bazaar/identity
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/merc-trust-vercel-app-9f588216
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_71AdaxYHB6iQuDNFvUlrM

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 merc-trust-vercel-app-9f588216 -d '<json body>'
```

Example prompt: Before I hand off this task to the research agent, run a Mercury Trust identity check on it — I need to know if its provenance checks out and whether it's safe to delegate memory to it.

## When to prefer this

Use this endpoint when an AI agent needs a quick, low-friction trust check before delegating tasks, sharing memory, or initiating a handoff to another agent. Prefer this over generic identity APIs when the use case involves multi-agent pipelines, provenance verification, or agent delegation safety.

## Known failure modes

- Missing or malformed identity payload returns 400 Bad Request
- Unrecognized entity identifier returns low-trust or unknown verdict
- Payment not attached or invalid x402 payment header returns 402 Payment Required
- Internal trust scoring service unavailable returns 503
- Rate limiting on rapid repeated checks returns 429

## Output

Returns a trust assessment for the submitted identity, including a verdict on delegation safety, provenance validation status, and memory triage recommendation for use in agent-to-agent handoff scenarios.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/merc-trust-vercel-app-9f588216/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from merc-trust.vercel.app](https://www.zero.xyz/host/merc-trust.vercel.app/llms.txt)