MCP server for RapidTools — deterministic JSON Schema validation with signed attestations.
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.
Add to your .mcp.json:
{
"mcpServers": {
"rapidtools": {
"command": "npx",
"args": ["-y", "@tailoredtools/mcp-server"],
"env": {
"RAPIDTOOLS_API_KEY": "your-api-key"
}
}
}
}Add to ~/.cursor/mcp.json:
{
"mcpServers": {
"rapidtools": {
"command": "npx",
"args": ["-y", "@tailoredtools/mcp-server"],
"env": {
"RAPIDTOOLS_API_KEY": "your-api-key"
}
}
}
}Add to .vscode/mcp.json:
{
"servers": {
"rapidtools": {
"type": "stdio",
"command": "npx",
"args": ["-y", "@tailoredtools/mcp-server"],
"env": {
"RAPIDTOOLS_API_KEY": "your-api-key"
}
}
}
}Visit billing.rapidtools.dev to subscribe and get an API key.
| Variable | Required | Description |
|---|---|---|
RAPIDTOOLS_API_KEY |
Yes | Your RapidTools API key |
RAPIDTOOLS_API_URL |
No | Override API endpoint (default: https://validate.rapidtools.dev) |
Validate data against a JSON Schema and get a signed attestation.
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 that an attestation signature is valid and untampered.
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
Retrieve a stored attestation by ID.
Input:
attestation_id — The attestation ID to retrieve
Output:
Full attestation record including signature and metadata
MIT