# Ambr

- Registry name: `io.github.getambr/ambr-mcp-server` · version 0.3.0
- Categories (automatic, keyword rules): Utilities, Crypto & blockchain, Finance & markets, Government & law
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.getambr%2Fambr-mcp-server
- Server page: https://mcpstation.net/s/io.github.getambr--ambr-mcp-server.html

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

Ricardian contracts for AI agents — dual-format, SHA-256 bound, legible by construction.

## Connect

- streamable-http: `https://getamber.dev/api/mcp`

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

- `ambr\_list\_templates`: List available contract templates on Ambr. Returns all active Ricardian Contract templates with their slugs, names, descriptions, categories, parameter schemas, and pricing. Use this to discover which templates are available before creating a contract with ambr\_create\_contract. No authentication req
- `ambr\_create\_contract`: Generate a Ricardian Contract from a template. Creates a dual-format contract \(human-readable legal text + machine-parsable JSON\) using AI, linked by SHA-256 hash. The contract is stored on Ambr and accessible via the Reader Portal. Requires a valid API key \(X-API-Key header on the HTTP request\) wit
- `ambr\_get\_contract`: Retrieve a contract by ID, SHA-256 hash, or UUID. With a valid API key \(contract creator\): returns the full contract including human-readable text, machine-readable JSON, status, and principal declaration. Without authentication: returns metadata only \(contract\_id, status, hash, dates\). Supports thr
- `ambr\_get\_contract\_status`: Check the status of a contract and its amendment chain. Returns the current status and any linked amendments \(parent or child contracts\). Useful for verifying if a contract is active, amended, or terminated. Args: - id \(string, required\): Contract ID, SHA-256 hash, or UUID Returns: - contract\_id, st
- `ambr\_verify\_hash`: Verify a contract's SHA-256 hash to confirm document integrity. Checks whether the provided hash matches a contract stored on Ambr. Returns verification status, contract metadata, and Reader Portal URL if found. Args: - hash \(string, required\): SHA-256 hash \(64-character hex string\) Returns: - verif
- `ambr\_agent\_handshake`: Initiate a handshake on a contract on behalf of your delegating principal. Requires an API key with an active delegation \(principal wallet registered via /api/v1/delegations\). Records the agent's intent to accept, reject, or request changes on the contract. The principal must separately approve via

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