For AI assistants
Connect SignThis to ChatGPT, Claude and other AI assistants
SignThis has an MCP server. Connected to it, an AI assistant can find your documents, tell you who still has to sign, prepare drafts and, once you confirm, send them for signature. You connect with your SignThis sign-in; no API key is needed.
How to connect
- In your assistant, add a custom connector (a remote MCP server) with the URL
https://signthis.pro/api/mcp. If SignThis is listed in your assistant's directory of apps or connectors, you can add it from there instead. - When the assistant opens SignThis, sign in, or create a free account.
- Choose the workspace to connect and what the assistant may do: see your documents, prepare drafts, and send for signature. Then choose Allow.
In Claude Code, run this, then type /mcp and choose SignThis to sign in:
claude mcp add --transport http signthis https://signthis.pro/api/mcpOnly a workspace's owners can connect it. If the workspace's plan includes API access, first turn on Allow API, webhook and MCP access in its security settings.
What the assistant can do
| Tool | What it does | Permission |
|---|---|---|
list_documents | Lists the workspace's documents and their status, optionally only those with a given status or with recent activity. | See your documents |
get_document | Reads one document in full: signers, fields, filled-in values and the verified audit trail. | See your documents |
get_signing_status | Shows who has viewed, signed or declined a document and who it is still waiting on. | See your documents |
list_templates | Lists the workspace's saved templates and the recipient slots each one has. | See your documents |
create_document_from_template | Creates a draft from a saved template, with the recipients filled in. Nothing is sent. | Prepare drafts |
create_upload_link | Gives a single-use link, valid for 15 minutes, to upload a PDF from your computer as a new draft. | Prepare drafts |
prepare_document | Sets a draft's signers, message, signing order and signature fields. Nothing is sent. | Prepare drafts |
send_document | Emails the signing invitations for a prepared draft. A sent document can't be edited. | Send for signature |
remind_signers | Emails a reminder to signers who haven't signed yet, at most once an hour each. | Send for signature |
An assistant sees only the tools that the permissions you chose allow. Sending and reminders email real people: those two tools are marked as reaching people outside your account, which assistants use to ask you before they run them.
Things to ask
- "Which of my SignThis documents are still waiting for signatures?"
- "Who still has to sign the consulting agreement?"
- "Remind everyone who hasn't signed the lease yet."
- "Make a draft from my NDA template for Grace Hopper, grace@example.com, and show it to me before it goes out."
- "Send contract.pdf to Ada Lovelace, ada@example.com, for signature, with a signature and the date on the last page."
To send a PDF from your computer, the assistant gets a single-use upload link and the file is uploaded from your computer, so that works in assistants that can run a command for you, such as Claude Code or Cursor. In other assistants, upload the PDF in SignThis or use a saved template, then ask the assistant to prepare and send the draft.
Limits and plans
- Connecting an assistant works on every plan, including the free plan.
- When a workspace's plan doesn't include API access, each account can send 3 documents through connected AI assistants. Reading documents and preparing drafts aren't counted. Sending more through an assistant needs a plan that includes API access; the plans are described on the home page.
- Every send also counts toward the workspace's own document allowance. The free plan includes 3 documents a month.
- Requests are rate-limited for each connection and each workspace, and uploads have the same size and page limits as SignThis itself.
Privacy and security
- A connection reaches one workspace, with the permissions you chose, and acts as you, an owner of that workspace.
- What a tool returns, such as document titles, signers' names and email addresses and filled-in values, goes to your assistant and to the company that runs it, under that company's terms. SignThis receives the assistant's requests, not your conversation with it.
- Connecting, disconnecting and the assistant's requests for workspace data are recorded in the workspace's audit log.
- Access tokens are short-lived and renewed by the assistant. A connection follows the workspace's security settings: changing them, or removing the owner who connected it, disconnects it.
The Privacy Policy and the Terms apply. How documents are encrypted and sealed is on the Security page.
Disconnecting
In SignThis, open the workspace's settings, then Security & integrations, and choose Disconnect next to the app under Connected apps. You can also remove the connector in your assistant. Changing the workspace's security settings disconnects every connected app.
Help
Questions, or a problem connecting? Write to support@signthis.pro. This page describes the service as it works on the date above. It is a description, not a commitment, and the Terms govern the service.