{"name":"ambr-mcp-server","version":"1.0.0","description":"Ambr MCP Server — create, verify, and manage Agent Mandates (Ricardian contracts) for AI agents. Stateless JSON-RPC over POST.","protocol":"mcp","protocolVersion":"2026-07-28","protocolVersions":["2026-07-28","2025-11-25","2025-06-18","2025-03-26"],"transport":"streamable-http","transport_note":"Stateless JSON mode: send JSON-RPC requests via POST. Server-initiated SSE is not offered — GET with Accept: text/event-stream returns 405.","tools":["ambr_list_templates","ambr_create_contract","ambr_get_contract","ambr_get_contract_status","ambr_verify_hash","ambr_agent_handshake","ambr_check_transaction"],"payment":{"methods":["api_key","x402"],"x402":{"version":2,"scheme":"exact","network":"eip155:8453","asset":"USDC","recipient":"0x74Dd76622fE346df084f5CDA7CcA3DD322c70174","request_header":"PAYMENT-SIGNATURE","challenge_header":"PAYMENT-REQUIRED"},"pricing_url":"https://getamber.dev/api/v1/pricing"},"paid_tools":["ambr_create_contract"],"docs":"https://ambr.run/developers"}