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E-signature API for AI agents: send contracts, sign PDF documents, track and download signed files.
io.zsign/zsign is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 93/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding io.zsign/zsign to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add io.zsign/zsign https://zsign.io/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-08-13T17:03:18.152248Z",
"publishedAt": "2026-08-13T17:03:18.152248Z",
"statusChangedAt": "2026-08-13T17:03:18.152248Z"
}
},
"server": {
"name": "io.zsign/zsign",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
"remotes": [
{
"url": "https://zsign.io/mcp",
"type": "streamable-http",
"headers": [
{
"name": "Authorization",
"isSecret": true,
"description": "Optional. This server is an OAuth 2.1 protected resource: clients should prefer OAuth, discovered automatically via /.well-known/oauth-protected-resource/mcp and /.well-known/oauth-authorization-server (authorization code + PKCE S256, Dynamic Client Registration at /oauth/register, refresh tokens, scopes: account:read, credits:read, credits:purchase, envelopes:send, envelopes:read). As an alternative, set this header to a static 'Bearer zs_live_...' API key. Neither is needed for discovery: create_account and get_pricing work unauthenticated, and create_account returns a key."
}
]
}
],
"version": "1.0.2",
"websiteUrl": "https://zsign.io",
"description": "E-signature API for AI agents: send contracts, sign PDF documents, track and download signed files."
}
}