# Global Weather & FX API — x402 Audit Endpoint

> Global Weather & FX API — x402 Audit Endpoint is a paid API for AI agents from agent-chain-kit-solana.vercel.app, paid per call via x402, $2/call, status unknown (last checked 2026-10-11).

Performs an x402 payment audit by accepting an origin and a list of endpoints, verifying x402 payment compliance for AI agent calls at $2 USDC per call.

## Facts

- Endpoint: POST https://agent-chain-kit-solana.vercel.app/v1/x402-audit?utm_source=zero.xyz
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/global-weather-fx-api-x402-audit-endpoint-bce7d938
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6BUG_Wo5FeySLvuEL5-FB

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 global-weather-fx-api-x402-audit-endpoint-bce7d938 -d '<json body>'
```

Example prompt: Run an x402 compliance audit on my origin https://myapi.example.com and check these endpoints: ['/v1/weather', '/v1/fx'], and pay the $2 USDC fee via x402.

## When to prefer this

Use this endpoint when you need to programmatically verify that a given API origin and its specific routes are correctly implementing the x402 pay-per-call payment protocol — especially before listing on an agent marketplace, onboarding a vendor, or debugging 402 payment failures. Prefer this over manual inspection when auditing multiple endpoints at once.

## Known failure modes

- Missing or invalid 'origin' field returns a 400 error
- Empty or malformed 'endpoints' array causes validation failure
- Unreachable origin domain may result in timeout or connection error
- Payment of $2 USDC not provided or rejected results in 402 response
- Endpoints with non-standard x402 implementations may produce inconclusive results

## How this service works

Global current weather, hourly forecasts, foreign-exchange rates, EVM reads, and deterministic utilities for AI agents. Pay per call with MPP or x402; no API key.

## Output

Returns an audit report indicating x402 payment compliance status for each submitted endpoint at the given origin — including whether payment headers, pricing, and payment flows are correctly implemented per the x402 protocol.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "origin",
  "endpoints"
 ],
 "properties": {
  "origin": {
   "type": "string"
  },
  "endpoints": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/global-weather-fx-api-x402-audit-endpoint-bce7d938/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-chain-kit-solana.vercel.app](https://www.zero.xyz/host/agent-chain-kit-solana.vercel.app/llms.txt)