{"specVersion":"1.0","host":{"displayName":"Tersign — the evidence layer for the agent economy","identifier":"did:web:tersign.ai","documentationUrl":"https://tersign.ai"},"entries":[{"identifier":"urn:ai:tersign.ai:server:evidence-mcp","displayName":"Tersign Evidence MCP Server","type":"application/mcp-server-card+json","url":"https://tersign.ai/.well-known/mcp/server-card.json","description":"MCP server for agent-commerce evidence: issue counter-signed x402 receipts, verify any receipt or action record without trusting the counterparty, record refunds, and run the dispute loop. Records are hash-chained and counter-signed by a neutral ledger, so they hold up as exhibits in any arbitration venue.","capabilities":["issue_receipt","verify_receipt","verify_compliance_record","record_refund","open_dispute","submit_dispute_evidence","get_dispute"],"representativeQueries":["issue a counter-signed receipt for an agent payment","verify an x402 payment receipt without trusting the seller","get court-ready evidence for an AI agent transaction dispute","tamper-evident audit trail for AI agent actions under EU AI Act Article 50"],"version":"0.1.2"},{"identifier":"urn:ai:tersign.ai:api:receipt-verification","displayName":"Public receipt verification API","type":"application/json","url":"https://tersign.ai/v1/receipts/{digest}/verify","description":"GET endpoint: given an artifact digest, returns its position in the seller's hash chain and the neutral ledger counter-signature — verifiable offline, no account, no API key. Sibling endpoint /v1/receipts/{digest}/envelope serializes the same proof for Internet Court, Kleros (ERC-1497), or UMA.","representativeQueries":["check whether a payment receipt from an agent purchase is genuine","verify a hash-chained transaction record via a public API"],"version":"1.0.0"},{"identifier":"urn:ai:tersign.ai:skill:tersign-evidence","displayName":"Tersign Evidence skill","type":"text/markdown","url":"https://raw.githubusercontent.com/tersignhq/skills/main/tersign-evidence/SKILL.md","description":"Agent skill: produce, verify, and submit counter-signed transaction evidence — envelopes for dispute venues, receipt verification, Article 50 compliance exports.","representativeQueries":["agent skill for producing dispute evidence envelopes for Kleros, UMA, or the Internet Court"],"version":"1.0.0"}]}