MCP Tool Schema Mismatch

A bounded diagnostic for MCP tool-schema and input-contract mismatches.

Failure class: MCP_SCHEMA_MISMATCH
Observed sanitized class occurrences: 13
Fingerprint: sha256:021ca1676c5ac8e8b5fefb9e0072ff15a8543c14bcb34cbc2b5e88ead286cdc9

Free checks

Check required fields and JSON types against the declared MCP tool schema.
Validate one deterministic valid example before changing either client or server.

Bounded repair scope

Bounded MCP schema and tool-contract alignment.

Machine diagnostic: POST https://naifgravity.com/mcp/diagnostic

No raw customer logs, tokens, API keys or user IDs are published. The free diagnostic does not create a quote, checkout, payment or production change automatically.

Machine-readable artifact

{
  "failure_class_id": "MCP_SCHEMA_MISMATCH",
  "collision_intent": "mcp_schema",
  "protocol_version": "MCP negotiated (2025-era / 2026-07-28)",
  "sanitized_fingerprint": "sha256:021ca1676c5ac8e8b5fefb9e0072ff15a8543c14bcb34cbc2b5e88ead286cdc9",
  "diagnostic_receipt": {
    "occurrences_observed": 13,
    "raw_user_data_stored": false,
    "gate": ">=3 sanitized Collision Chamber occurrences"
  },
  "free_checks": [
    "Check required fields and JSON types against the declared MCP tool schema.",
    "Validate one deterministic valid example before changing either client or server."
  ],
  "repair_scope": "Bounded MCP schema and tool-contract alignment.",
  "repair_available": true,
  "product_id": "json-validity-check",
  "machine_call_endpoint": "https://naifgravity.com/mcp/diagnostic",
  "quote_endpoint": "https://naifgravity.com/api/agent/quote",
  "artifact_version": "1.0",
  "updated_at": "2026-10-06"
}