Human signatures for AI agents

Your agent asks.
You sign.
The PDF comes back.

Gotoquill lets ChatGPT, Claude, Grok Bot, Muse, and any MCP client request a human signature on a PDF. You review and sign in the browser, then close the tab. The signed file returns to the chat.

Join the waitlist See it in action
Works with ChatGPT Claude Grok Bot Muse any MCP host
Sealed end to end
Robin Your AI assistant
Today 9:38
Fill out this rental agreement and get my signature.
Sent you a signing link
rental-agreement.pdf 0 of 3 spots

Residential Lease

Elm Street unit. Pets allowed with deposit. Tenant acknowledges the terms below and signs where marked.

✎ Sign here
Signature
Alex Example
Oct 26, 2026
Your signature
Draw
Signed. Here is your copy.
rental-agreement-signed.pdf Signed · back in chat
Ask in chat. Get a sealed signing link.
Product demo

See it in action

A full signing loop from chat to sealed PDF and back. Muted and looping, it plays inline on phones.

How it works

How a signature request works

When an agent needs a person to approve a document, Gotoquill handles the handoff without a separate signing product to manage.

01

Agent calls Gotoquill

Your MCP host requests a signature. The local CLI and upcoming Cloud product use the same sealed-link flow.

02

You confirm on a page

Open the sealed link, review the PDF, draw or type a signature. The key stays in the URL fragment.

03

PDF lands back in chat

Close the tab. The signed file returns to the agent thread. No email round trip.

Compatibility

Compatible MCP hosts

These are product names, not partnerships. Tested means we ran the flow ourselves. Via MCP means any standards-compatible MCP client should behave the same way.

GPT ChatGPT
TestedMCP connector
C Claude
TestedDesktop / Code · MCP
G Grok Bot
TestedMCP
M Muse
Via MCP
OC OpenClaw
Via MCP
H Hermes
Via MCPNous Research
∞ Any MCP client
Via MCPOpen protocol

Not an official partnership with OpenAI, Anthropic, xAI, Nous Research, or others. Compatibility comes from the MCP protocol.

Early access

Join the waitlist

The public install and GitHub repository are not available yet, and Gotoquill Cloud MCP is not live. Leave your email and we will notify you when open source and Cloud are ready. We store email and timestamp only.

Email me when it ships

One email when Gotoquill is installable. No marketing drip. We do not sell your address.

What we are shipping next

  • Open-source Gotoquill (Apache-2.0) as a local MCP on your laptop
  • Gotoquill Cloud: hosted OAuth MCP for assistants that cannot run local tools
  • Public GitHub at github.com/shay2301/gotoquill when we open the repository
Privacy

Encryption keys stay with you

Sealed signing links use end-to-end encryption. The decryption key is meant to live in the URL fragment or on your client, not on our servers.

Read the privacy policy
Sealed links AES-GCM payloads. Relay sees ciphertext and short-lived metadata, not your clear PDF.
Your relay, your rules Open-source Cloudflare Worker you can run yourself when the repo is public.
Human confirmation Agents can’t forge a signature. A person has to open the page and consent.
Apache-2.0 · coming soon

Run it on your own machine

Open-source Gotoquill will run locally with no Cloud account required. Same signing UX and sealed links. The public GitHub repository is not ready yet.

Join the waitlist GitHub (coming soon)