# FiatDock MCP/API Error Rescue

> FiatDock MCP/API Error Rescue is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-18).

Diagnoses and repairs MCP/API errors, returning corrected calls or actionable fixes for failed agent tool invocations

## Facts

- Endpoint: POST https://fiatdock.com/s/svc_39fcbf01-5e38-4c6b-90da-198b66c1fc32?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fiatdock-mcp-api-error-rescue-71a9f85e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_82yn2AjvlftpR8_CAg0jF

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 fiatdock-mcp-api-error-rescue-71a9f85e -d '<json body>'
```

Example prompt: My MCP tool call to 'tools/call' just failed with an argument error — can you run it through the error rescue service to diagnose what went wrong and get back a corrected version?

## When to prefer this

Use this endpoint when an AI agent or automated pipeline has received an MCP or API error and needs programmatic diagnosis and correction without human intervention. Particularly valuable in agentic loops where a tool call has failed and you need a fast, pay-per-use rescue rather than building custom error-handling logic. Prefer this over manual debugging when the error is in a JSON-RPC/MCP context and you want a structured repair suggestion returned automatically.

## Known failure modes

- Missing or incomplete error body leads to vague or unhelpful diagnosis
- Unknown tool names or proprietary schemas may not be resolvable
- Seller-specific required arguments not published in schema may still cause argument errors post-repair
- Network timeout if upstream seller MCP server is slow
- Charge is settled even if the call returns an argument error due to missing unpublished parameters

## How this service works

Pay-per-call: MCP/API Error Rescue

## Output

Returns a diagnosis of the error cause along with a corrected or repaired API/MCP call body, actionable fix suggestions, or guidance on what argument or parameter was malformed — enabling the agent to retry successfully.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "method": {
   "type": "string",
   "description": "e.g. tools/call"
  },
  "params": {
   "type": "object",
   "description": "the seller's own tool name + arguments. The example body above is EMPTY on purpose: this listing's required arguments are not published here, and a call missing one can come back as an argument error, which is settled as your call. Read the callable shape of every tool on this seller's server free at GET https://fiatdock.com/v1/marketplace/services/svc_39fcbf01-5e38-4c6b-90da-198b66c1fc32?include=schemas"
  },
  "jsonrpc": {
   "type": "string",
   "description": "\"2.0\" — the body is forwarded VERBATIM to the seller's MCP endpoint, so send whatever that server expects"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fiatdock-mcp-api-error-rescue-71a9f85e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fiatdock.com](https://www.zero.xyz/host/fiatdock.com/llms.txt)