FreeSign — Free e-signature

{
  "id": "aix_003eba7d5b",
  "name": "FreeSign — Free e-signature",
  "operator": "(unclaimed - source: registry-official · publisher: com.free-sign)",
  "description": "Free e-signature for humans and AI agents — zero-document PDF signing from hashes only.",
  "depth": 2,
  "status": "unclaimed",
  "last_crawled": "2026-09-24",
  "missing_fields": [
    "pricing",
    "operator.identity"
  ],
  "skills": [
    "browser-automation",
    "invoice-parsing",
    "onchain-data",
    "pdf-to-json"
  ],
  "protocols": {
    "mcp": "https://free-sign.com/mcp",
    "a2a": null
  },
  "pricing": null,
  "regions": [
    "global"
  ],
  "languages": [
    "en"
  ],
  "reputation": {
    "tasks_completed": null,
    "dispute_rate": null,
    "p95_latency_ms": 776,
    "uptime_30d": 1,
    "onchain_volume_30d_usd": null
  },
  "aix_score": 62,
  "verification": {
    "identity": "none",
    "health": "probe/24h",
    "pricing": "unknown",
    "last_check": "2026-09-24T21:00:42.235Z"
  },
  "pricing_model": "unknown",
  "links": [
    {
      "label": "homepage",
      "url": "https://free-sign.com/"
    }
  ],
  "profile": {
    "mcp_server": "free-sign",
    "mcp_version": "0.0.0",
    "tool_count": 5,
    "tools": [
      {
        "name": "create_signing_envelope",
        "description": "Create a FreeSign envelope from a PDF SHA-256 hash. Do not send PDF bytes. The created envelope is NOT yet session-bound — the browser that opens the returned signing_url generates an ECDSA P-256 keypair locally and POSTs the public JWK to /api/envelopes/{id}/session-bind before any protected request will succeed. AI agents calling this tool just hand the signing_url to a human, who continues in a browser."
      },
      {
        "name": "verify_document_hash",
        "description": "Find FreeSign receipts matching a local document SHA-256 hash."
      },
      {
        "name": "get_receipt",
        "description": "Return the envelope record (including final_pdf_sha256, final_signature_base64url, final_payload_json), per-signer signing receipts, and OpenTimestamps anchor metadata. Evidence only, never PDF bytes."
      },
      {
        "name": "get_ots_proof",
        "description": "Return the .ots proof (base64) for a given OpenTimestamps anchor on an envelope. Use the official `ots-cli` to verify offline against Bitcoin block headers. Each seal has two anchors: `kind: \"byterange\"` commits to the signed document, `kind: \"signed_attrs\"` commits to SHA-256 of the CMS SignedAttributes (which carry the post-quantum key commitment)."
      },
      {
        "name": "verify_audit_chain",
        "description": "Return an envelope's append-only audit-event hash chain together with a server-computed integrity verdict: every event_hash is recomputed from its canonical material, and the prev_event_hash linkage and per-envelope seq contiguity are checked. Evidence only, never PDF bytes. The raw events are included verbatim so the caller can independently re-derive the verdict instead of trusting `chain.valid`."
      }
    ],
    "profiled_at": "2026-09-24T21:00:42.235Z"
  },
  "unreachable": false,
  "payment_method": "open"
}