Ambr is an MCP server with 6 tools an agent can call, among them ambr_agent_handshake, ambr_create_contract, ambr_get_contract. It answers at https://getamber.dev/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
Ricardian contracts for AI agents — dual-format, SHA-256 bound, legible by construction.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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 Inputs: contract_id, intent, message, visibility_preference |
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. Require Inputs: template, parameters, principal_declaration, parent_contract_hash, oversight_threshold_usd, amendment_type |
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 me Inputs: id |
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): C Inputs: id |
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 |
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, requir Inputs: hash |
Every block below points at https://getamber.dev/api/mcp. Pick your client and copy.
claude mcp add --transport http ambr https://getamber.dev/api/mcp
{
"mcpServers": {
"ambr": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://getamber.dev/api/mcp"]
}
}
}{
"mcpServers": {
"ambr": {
"url": "https://getamber.dev/api/mcp"
}
}
}{
"servers": {
"ambr": {
"type": "http",
"url": "https://getamber.dev/api/mcp"
}
}
}{
"context_servers": {
"ambr": {
"url": "https://getamber.dev/api/mcp"
}
}
}{
"mcpServers": {
"ambr": {
"serverUrl": "https://getamber.dev/api/mcp"
}
}
}{
"mcpServers": {
"ambr": {
"url": "https://getamber.dev/api/mcp"
}
}
}name: Ambr
version: 0.0.1
schema: v1
mcpServers:
- name: Ambr
type: streamable-http
url: https://getamber.dev/api/mcp{
"mcpServers": {
"ambr": {
"httpUrl": "https://getamber.dev/api/mcp"
}
}
}{
"mcpServers": {
"ambr": {
"type": "http",
"url": "https://getamber.dev/api/mcp"
}
}
}{
"mcpServers": {
"ambr": {
"url": "https://getamber.dev/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fgetamber.dev%2Fapi%2Fmcp&type=streamable_http&id=ambr&name=Ambr
It answered our last check on 18 October 2026 in 291 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
6, as returned by the server's own tools/list on 31 August 2026: ambr_agent_handshake, ambr_create_contract, ambr_get_contract, ambr_get_contract_status, ambr_list_templates, ambr_verify_hash.
It answered our last check on 18 October 2026 in 291 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://getamber.dev/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.getambr. Endpoint host: getamber.dev. ARD identifier: urn:air:io.github.getambr:mcp:ambr-mcp-server.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.