Search / com.free-sign/signing
protogridR0· no sign-inFree e-signature for humans and AI agents — zero-document PDF signing from hashes only.
v1.0.0 · active · website · descriptor JSON · versions
{
"mcpServers": {
"signing": {
"type": "http",
"url": "https://free-sign.com/mcp"
}
}
}claude mcp add --transport http signing https://free-sign.com/mcp[mcp_servers.signing]
url = "https://free-sign.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"signing": {
"type": "remote",
"url": "https://free-sign.com/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"signing": {
"type": "http",
"url": "https://free-sign.com/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=signing&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZnJlZS1zaWduLmNvbS9tY3AifQ%3D%3D"
}{
"servers": {
"signing": {
"type": "http",
"url": "https://free-sign.com/mcp"
}
}
}{
"mcpServers": {
"signing": {
"httpUrl": "https://free-sign.com/mcp"
}
}
}extensions:
"signing":
enabled: true
name: "signing"
type: streamable_http
uri: "https://free-sign.com/mcp"
timeout: 300
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28protocol.statelessonly applies to 2026-07-28 serversprotocol.transportstreamable HTTPprotocol.list_ttlonly applies to 2026-07-28 serversauth.prm, auth.as_metadata, auth.cimdno remote uses OAuthauth.secret_in_urlno templated URLtools.descriptionsevery tool has a descriptiontools.description_lengthdescriptions are concisetools.schemasevery tool has an object input schematools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky onestools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: verify_audit_chain (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_ots_proof (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_signing_envelope (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …tools.token_costabout 570 tokens to load every tooltools.api_dumptools are not a one-to-one API dumpstability.changesno tool changes in 30 daysstability.rug_pullno tool changed its meaning under the same namedeps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI packageNo tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+dns-namespace +website +reachable +uptime-96% ~updated-127d-ago -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://free-sign.com/mcp streamable-http | none | yes | 96% | 189 ms | 2025-06-18 | 2026-10-20 |
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 request will succeed. AI agents calling this tool just hand the signing_url to a human, who continues in a browser. |
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 SignedAttributes (which carry the post-quantum key commitment). |
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. |
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 included verbatim so the caller can independently re-derive the verdict instead of trusting `chain.valid`. |
verify_document_hash | Find FreeSign receipts matching a local document SHA-256 hash. |
Schemas: list_tools.
{
"name": "com.free-sign/signing",
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"tools": [
"create_signing_envelope",
"verify_document_hash",
"get_receipt",
"get_ots_proof",
"verify_audit_chain"
],
"skills": [
{
"name": "free-sign-agent",
"canonical": "https://free-sign.com/free-sign-agent/SKILL.md",
"description": "How to use FreeSign as an AI agent without uploading PDF content."
}
],
"openapi": "https://free-sign.com/openapi.json",
"documentation": "https://free-sign.com/llms.txt",
"documentUpload": false,
"protocolVersion": "2025-06-18"
}
},
"title": "FreeSign — Free e-signature",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://free-sign.com/mcp",
"type": "streamable-http"
}
],
"version": "1.0.0",
"websiteUrl": "https://free-sign.com",
"description": "Free e-signature for humans and AI agents — zero-document PDF signing from hashes only."
}