Mylastwill MCP server

• Registry nameorg.mylastwill/mylastwillverified in the MCP registry

The registry name sits under mylastwill.org. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-28
• Tools10
• Server calls itselfmylastwill
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 43 ms.

• Its tools do every use case we checked: write a will naming heirs and guardians; split an estate between family and chosen charities.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP score98 of 100answers 100 · does the job 100 · definitions 98 · context 86 · connects 100
• What an agent can do with it2 of 2 use cases
• Answered100% of days8 of 8 daily checks
• Median first answer135 ms
• Space in an agent's context≈ 5,013 tokensthe definitions of all its tools (10), which an agent carries on every turn
• Tool definitionsA · 98 of 100
• Typed results0 of 10 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 1 of 10

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• create_will

  Draft a complete U.S. last will and testament, optionally with charitable gifts to causes the person chooses. For people who want to make, write or update a will. Every name and fact in the input comes from the person. Returns the will…

• add_charity_to_existing_will

  Draft a codicil (a short signed amendment) that adds a charitable gift to a will the person already has, plus gift wording to give their attorney. Use when someone already has a will and wants to leave a percentage or dollar amount to…

• charity_beneficiary_designations

  Prepare instructions for naming charities as beneficiaries of retirement accounts, life insurance, bank (payable-on-death) or brokerage (transfer-on-death) accounts, with the percentages to write on each form. No will needed. Traditional…

• get_bequest_language

  Return sample bequest wording for a will or trust that gives a percentage or dollar amount to causes or named charities, for the person or their attorney to adapt. Use for quick questions like "how do I word a gift to charity in my will?"

• get_state_will_requirements

  Look up how to sign a valid will in a U.S. state: witnesses, notarization and self-proving affidavits, handwritten (holographic) wills, electronic wills and remote online notarization, plus the state's estate or inheritance tax, with…

• lookup_charity

  Find a U.S. charity's exact legal name, EIN (federal tax ID), city and state, and 501(c)(3) status from IRS filings (via ProPublica Nonprofit Explorer), with ready-to-use bequest and beneficiary-form wording. Helpful before a specific…

• estimate_estate_tax

  Estimate U.S. federal estate tax for the current year and whether the person's state estate or inheritance tax may apply, including how much a charitable gift in the will saves. Federal tax is 40% of the taxable estate above the exemption…

• list_causes

  List the cause areas MyLastWill supports for charitable gifts (e.g. cancer research, rare diseases, education, animal welfare, global health), with what each gift would be used for.

• search

  Search MyLastWill.org's plain-English guides, state will requirements, FAQ and glossary about wills, estates, charitable bequests, estate tax and online signing. Returns result ids for fetch.

• fetch

  Fetch the full text of a guide, state page, FAQ answer or glossary entry by the id returned from search.