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rapidtools-mcp-server

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MCP server for RapidTools — deterministic JSON Schema validation with signed attestations

0 stars JavaScriptOthers Updated Feb 9, 2026

Documentation

@tailoredtools/mcp-server

MCP server for RapidTools — deterministic JSON Schema validation with signed attestations.

What this does

Exposes three tools to any MCP-compatible client (Claude Code, Cursor, Cline, VS Code Copilot):

  • validate — Validate a JSON payload against a JSON Schema. Returns a signed attestation.
  • verify — Verify the cryptographic signature of a previous attestation.
  • get_attestation — Retrieve a stored attestation by ID.

Every validation is deterministic (same inputs = same result), idempotent, and cryptographically signed.

Setup

Claude Code

Add to your `.mcp.json`:

json
{
  "mcpServers": {
    "rapidtools": {
      "command": "npx",
      "args": ["-y", "@tailoredtools/mcp-server"],
      "env": {
        "RAPIDTOOLS_API_KEY": "your-api-key"
      }
    }
  }
}

Cursor

Add to `~/.cursor/mcp.json`:

json
{
  "mcpServers": {
    "rapidtools": {
      "command": "npx",
      "args": ["-y", "@tailoredtools/mcp-server"],
      "env": {
        "RAPIDTOOLS_API_KEY": "your-api-key"
      }
    }
  }
}

VS Code Copilot

Add to `.vscode/mcp.json`:

json
{
  "servers": {
    "rapidtools": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@tailoredtools/mcp-server"],
      "env": {
        "RAPIDTOOLS_API_KEY": "your-api-key"
      }
    }
  }
}

Get an API key

Visit billing.rapidtools.dev to subscribe and get an API key.

Environment variables

VariableRequiredDescription
`RAPIDTOOLS_API_KEY`YesYour RapidTools API key
`RAPIDTOOLS_API_URL`NoOverride API endpoint (default: `https://validate.rapidtools.dev`)

Tools

validate

Validate data against a JSON Schema and get a signed attestation.

code
Input:
  schema      (object, required) — JSON Schema (Draft 2020-12 subset)
  payload     (any, required)    — Data to validate
  metadata    (object, optional) — Key-value pairs to attach
  idempotency_key (string, optional) — For deduplication

Output:
  attestation_id  — Unique attestation identifier
  valid           — true/false
  errors          — Array of validation errors (if any)
  schema_hash     — SHA-256 of the schema
  payload_hash    — SHA-256 of the payload
  signature       — HMAC-SHA256 cryptographic signature
  timestamp       — ISO 8601 timestamp

verify

Verify that an attestation signature is valid and untampered.

code
Input (option A):
  attestation_id  — ID of a stored attestation

Input (option B):
  id, schema_hash, payload_hash, valid, created_at, signature — Full attestation record

Output:
  attestation_id    — The verified attestation ID
  signature_valid   — true/false

get_attestation

Retrieve a stored attestation by ID.

code
Input:
  attestation_id  — The attestation ID to retrieve

Output:
  Full attestation record including signature and metadata

License

MIT

Frequently asked questions

What is rapidtools-mcp-server?

rapidtools-mcp-server is MCP server for RapidTools — deterministic JSON Schema validation with signed attestations

How do I install rapidtools-mcp-server?

Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.

Is rapidtools-mcp-server open source?

Yes — it is hosted on GitHub at https://github.com/Tailored-Tools/rapidtools-mcp-server.

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