APIs › Agent & Developer Utilities › MCP Manifest Validator

MCP Manifest Validator

Validates an MCP tool manifest for required fields, name legality, schema validity and duplicate tool names.

POST /v1/developer/mcp-manifest-validate $0.02 per call

Specification

Endpoint

POST /v1/developer/mcp-manifest-validate

Price

$0.02 per call · tier advanced_analysis

Payment

x402 on X Layer (chain 196) · settled in USDG or USDT0 · scheme exact

Data source

Deterministic local computation on caller-supplied input

Timeout

15 seconds

Max request

2 MB

Version

1.0.0

Calling it

The first call returns a 402 with the payment challenge. Retry with a signed authorisation in the X-PAYMENT header — see the payment guide for the exact shape.

curl -i -X POST "https://api.dana-edu.pp.ua/v1/developer/mcp-manifest-validate" \
  -H "content-type: application/json" \
  -d '{ ... }'

Response

Real output, captured by running this endpoint at build time — not written by hand. Volatile fields such as timestamps are elided. Captured 2026-07-30.

{
  "valid": false,
  "tool_count": 2,
  "unique_names": 2,
  "counts_by_severity": {
    "error": 1,
    "warning": 2,
    "info": 0
  },
  "findings": [
    {
      "severity": "error",
      "tool": "get item",
      "field": "name",
      "message": "Tool name contains characters outside [A-Za-z0-9_-]; most clients will reject it."
    },
    {
      "severity": "warning",
      "tool": "get item",
      "field": "description",
      "message": "Tool has no description, so a model cannot tell when to call it."
    },
    {
      "severity": "warning",
      "tool": "get item",
      "field": "inputSchema.properties",
      "message": "No 'properties' declared; the tool appears to take no arguments. Add an empty object if that is intended."
    }
  ]
}

Every response is wrapped in the same envelope: data plus warnings, sources, confidence, informational_only and a measured processing_ms. See the envelope reference.

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