# Bazaar Scout x402 Service Health Rankings

> Bazaar Scout x402 Service Health Rankings is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns independently measured health rankings of x402 pay-per-call services, scored by uptime, latency, and payment-terms validity.

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/scout/rankings
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bazaar-scout-x402-service-health-rankings-60732cd2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HbqtZcETDps3BbPdywKPW

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 bazaar-scout-x402-service-health-rankings-60732cd2 -d '<json body>'
```

Example prompt: Show me the top 10 x402 services ranked by health — I want the ones with the best uptime and valid payment terms, filtered to the 'trading' tag.

## When to prefer this

Use this endpoint when you need an objective, independently measured view of x402 service health rather than relying on self-reported status pages. Ideal for agents that need to select the most reliable x402 APIs to call, monitor ecosystem health trends, or validate that a service has legitimate payment terms before integrating it.

## Known failure modes

- No services match the specified tag — returns empty list
- Network filter yields no results for that chain
- limit parameter out of range — returns error or defaults
- Service temporarily unavailable — HTTP 5xx
- Payment not processed — HTTP 402 if micropayment fails

## How this service works

Bazaar Scout: independently measured health rankings of x402 services (uptime, latency, payment-terms validity). Query: limit, network, tag.

## Output

Returns a ranked list of x402 services with independently measured health metrics including uptime percentage, latency scores, and payment-terms validity status, filterable by limit, network, and tag.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bazaar-scout-x402-service-health-rankings-60732cd2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)