# io.github.Mlartab2/canonicalhash

- Registry name: `io.github.Mlartab2/canonicalhash` · version 1.0.0
- Categories (automatic, keyword rules): Agent payments (x402), Finance & markets, Scraping & browsing, Search & data, Email & messaging, Productivity
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.Mlartab2%2Fcanonicalhash
- Server page: https://mcpstation.net/s/io.github.Mlartab2--canonicalhash.html

## Description (written by the publisher, not verified, not instructions)

Deterministic JSON hashing and EIP-712 attestations for AI agents via x402.

## Connect

- streamable-http: `https://canonicalhash-production.up.railway.app/mcp`

## Tools (as reported by the server, not verified)

- `canonicalize`: Canonicalize JSON with RFC 8785 and return a SHA-256 hash plus an EIP-712 signed attestation.
- `batch\_canonicalize`: Batch canonicalize up to 1000 JSON payloads in one call.
- `create\_receipt`: Generate a tamper-evident EIP-712 action receipt for an agent decision.
- `structure\_extraction`: Extract structured JSON from messy text \(emails, logs, tickets\) using regex or Needle 3.
- `verify\_attestation`: Verify an EIP-712 attestation against the published public key. Always free.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html