PenlyDoc MCP server

Let an AI assistant send documents for e-signature with PenlyDoc and follow them: "Send the lease to Mia Novak from the Residential lease template, rent 950 EUR", "Who still has to sign order 42?", "Save the signed contract to ./signed".

It is a Model Context Protocol server that runs on your computer (stdio) and talks to the PenlyDoc REST API with your organisation's API key. Works with any MCP client.

Setup

1. Create an organisation at penlydoc.com (free) and copy an API key from Console → Developers.
2. Add the server to your MCP client's configuration:

{
  "mcpServers": {
    "penlydoc": {
      "command": "npx",
      "args": ["-y", "penlydoc-mcp"],
      "env": { "PENLY_API_KEY": "sk_…" }
    }
  }
}

Node.js 18.17 or newer is needed. PENLY_URL points the server at another PenlyDoc instance (default https://penlydoc.com).

Treat the API key like a password: it can send documents in your organisation's name. Give the assistant a key of its own, so you can revoke it in the console without touching your other integrations.

Tools

Tool	What it does	Side effects
get_organisation	Which organisation the key belongs to, sending limit	none
list_templates	Templates with their roles and data keys	none
send_from_template	Create a document from a template; send: true e-mails the people	e-mails real people
send_document	Upload local PDFs or photos and create a document; boxes from {{sig:1}} tags or coordinates	e-mails real people when send: true
list_documents	Documents with status and who has signed; filter by status or your reference	none
get_document	One document: each person, opened, signed or declined, and when	none
get_history	Hash-chained history with times and IP addresses	none
send_draft	Send a draft	e-mails real people
send_reminder	Remind everyone whose turn it is	e-mails real people
cancel_document	Void a document that is still being signed	cannot be undone
create_signing_link	One-hour link for an embedded signer	the link signs as that person
download_signed_pdf	Save the sealed PDF of a completed document to a file	writes a local file (never overwrites)
verify_pdf	Check a signed PDF: seal intact, who signed	none, no key needed

The server tells the assistant to confirm people, e-mail addresses and documents with you before anything is sent. Most MCP clients also ask you before each tool call; keep that on for the tools that e-mail people.

Learn more

• Developer guide and embedding guide
• Examples in Node.js, Python, PHP and React

MIT licensed.