# FreeSign — Free e-signature

- Registry name: `com.free-sign/signing` · version 1.0.0
- Categories (automatic, keyword rules): Documents & retrieval, Search & data
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.free-sign%2Fsigning
- Server page: https://mcpstation.net/s/com.free-sign--signing.html

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

Free e-signature for humans and AI agents — zero-document PDF signing from hashes only.

## Connect

- streamable-http: `https://free-sign.com/mcp`

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

- `create\_signing\_envelope`: 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 reques
- `verify\_document\_hash`: Find FreeSign receipts matching a local document SHA-256 hash.
- `get\_receipt`: 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.
- `get\_ots\_proof`: 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 SignedAttri
- `verify\_audit\_chain`: 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 inclu

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