Write a will with Claude, ChatGPT or Grok: MyLastWill for AI assistants

Connect in one step

Add this address as a connector (also called a custom MCP server). No account, sign-in or key is needed.

MCP server URL

https://mylastwill.org/mcp

Claude and Cowork

On Pro or Max, open Customize, then Connectors, choose + Add, then Add custom connector.
Name it MyLastWill, paste the URL above, and choose No sign in.
Turn it on in a chat or in Cowork, then ask: “Help me write my will with MyLastWill.”

Free Claude accounts can add one custom connector. On Team and Enterprise plans, an owner adds it first under Organization settings, then Connectors.

ChatGPT

Open Plugins, choose +, then Add custom MCP server, and paste the URL. Availability depends on your plan and workspace settings.

Grok

Go to grok.com/connectors, choose New Connector, then Custom, and paste the URL. Developers using the xAI API can attach it as a remote MCP tool:

{"type": "mcp", "server_url": "https://mylastwill.org/mcp", "server_label": "mylastwill"}

Claude Code, Cursor and VS Code

claude mcp add --transport http mylastwill https://mylastwill.org/mcp

Cursor (~/.cursor/mcp.json):

{"mcpServers": {"mylastwill": {"url": "https://mylastwill.org/mcp"}}}

VS Code (.vscode/mcp.json):

{"servers": {"mylastwill": {"type": "http", "url": "https://mylastwill.org/mcp"}}}

Microsoft Copilot Studio and Gemini Enterprise

In Copilot Studio, choose Tools, Add a tool, New tool, Model Context Protocol, with no authentication. In Gemini Enterprise, an admin adds a custom MCP data store with the same URL.

What your assistant can do

Tool	What it does
`create_will`	Drafts a complete will, with optional gifts to causes, plus a signing checklist and a plain-English summary of who inherits.
`add_charity_to_existing_will`	Drafts a codicil that adds a charitable gift to a will you already have, plus wording for your attorney.
`charity_beneficiary_designations`	Tells you what to write on IRA, 401(k), life insurance and bank beneficiary forms.
`get_bequest_language`	Gives sample wording for a gift to charity in a will or trust.
`get_state_will_requirements`	Explains how to sign a valid will in any state: witnesses, notarization, handwritten and electronic wills.
`list_causes`	Lists the cause areas you can support.
`search`, `fetch`	Search and read our guides, FAQ and glossary.

Privacy and safety

Nothing is stored. Our server turns what your assistant sends into documents and keeps nothing. Your conversation itself is covered by your AI provider's privacy policy.
Not legal advice. MyLastWill is self-help software and is not a substitute for the advice of an attorney. A will is valid only when signed as your state requires.
Family first. We ask assistants never to pressure anyone to give, and to use only facts you provide.
We don't prepare wills or codicils for Louisiana or North Carolina residents; your assistant will get gift wording instead.

For developers and other agents

REST API: /api, described in /openapi.json (OpenAPI 3.1). For example, POST /api/wills takes the same input as create_will.
Discovery: listed in the official MCP Registry as org.mylastwill/mylastwill. The MCP server card is at /mcp/server-card and is listed in /.well-known/ai-catalog.json.
For language models: /llms.txt and /llms-full.txt.
Browser agents can use the will builder directly: every field is labeled, and there's no sign-in or CAPTCHA.
The server supports MCP protocol versions 2024-11-05 through 2026-07-28 over Streamable HTTP.

Write your will from your AI assistant