compatibility · beta · free

Error-Code Cemetery

Look up a normalized obscure error fingerprint in a narrow, evidence-linked corpus. Inspect limits for current coverage; unknown fingerprints return free NOT_COVERED before payment.

Use when

An agent needs evidence about a deprecated or host-specific error code.
Compatibility behavior must be checked before changing an integration.

Do not use when

The exact host, version, or error is outside the published dataset.
The answer would be treated as a guarantee about future host behavior.

Invocation contract

HTTP: /v1/tools/error-code-cemetery
Version: 0.1.0
Mode: lookup
Idempotency: not required
Retention: The submitted fingerprint is normalized in memory. Raw input is not retained; execution controls retain a request hash.
Tested with: HTTP/1.1, HTTP/2, MCP Streamable HTTP

Positive and negative examples

{
  "input": {
    "fingerprint": "github-oauth-redirect-uri-mismatch"
  },
  "output": {
    "fingerprint": "github-oauth-redirect-uri-mismatch",
    "system": "GitHub OAuth",
    "diagnosis": "The redirect_uri does not match the registered callback.",
    "correction": [
      "Register the exact callback URL."
    ],
    "confidence": 0.99,
    "sample_count": 1,
    "observed_at": "2026-07-24T00:00:00.000Z",
    "evidence_urls": [
      "https://docs.github.com/en/apps/oauth-apps/maintaining-oauth-apps/troubleshooting-authorization-request-errors"
    ]
  },
  "negative": [
    {
      "scenario": "The exact host, version, or error is outside the published dataset.",
      "expected_error": "NOT_COVERED",
      "charged": false
    }
  ]
}

Deterministic errors

Code	Retry	Charged	Recovery
INVALID_INPUT	false	false	Correct the request to match input_schema.
NOT_COVERED	false	false	Check dataset scope or submit a capability request.
TOOL_PAUSED	true	false	Wait for the operator to resume the tool.
RATE_LIMITED	true	false	Retry after the response Retry-After interval.
DEPENDENCY_UNAVAILABLE	true	false	Retry with the same idempotency identity.

Full machine manifest

The HTTP, OpenAPI, MCP, llms.txt, and ARD descriptions are generated from this same registry record.

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