# HolyTerminal x402 Diagnosis

> HolyTerminal x402 Diagnosis is a paid API for AI agents from holyterminal.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Returns a step-by-step settlement trace and actionable fix list for x402 payment protocol failures

## Facts

- Endpoint: GET https://holyterminal.xyz/v1/paid/x402-diagnosis?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/holyterminal-x402-diagnosis-3e5b4a4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d-Tgbn94KcvDb7aedmpbB

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 holyterminal-x402-diagnosis-3e5b4a4e
```

Example prompt: My x402 payment integration keeps failing at settlement — can you run a step-by-step diagnosis and give me a fix list for what's going wrong?

## When to prefer this

Choose this endpoint when you need a structured, step-by-step breakdown of an x402 payment settlement failure rather than raw logs. Particularly useful when integrating x402 for the first time or debugging intermittent settlement issues where the failure point is unclear.

## Known failure modes

- Insufficient context provided to trace the specific payment — may return generic diagnosis
- x402 transaction data unavailable or malformed — returns error
- Service unavailable — HTTP 5xx response
- Payment of $0.02 USDC not received — 402 response blocking access

## How this service works

step-by-step x402 settlement trace + fix list

## Output

A structured step-by-step trace of the x402 payment settlement flow, identifying where and why failures occur, accompanied by an actionable list of recommended fixes for each identified issue.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/holyterminal-x402-diagnosis-3e5b4a4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from holyterminal.xyz](https://www.zero.xyz/host/holyterminal.xyz/llms.txt)