Change Verifier

Before anyone changes who a company pays. Seven checks, a named owner, a gate. Nothing writes itself.

This is a Muse Connector: a Streamable-HTTP MCP server plus a controller UI. It is not a payment system. It never posts to a bank or an ERP. The accepted payload is a dry-run for the system of record’s own door.

Demo tenant: Northbrook Precision LLC (fictional counterparties).

Source: github.com/naileditnorthshore-lab/change-verifier

Muse submission

Paste this at muse.ai/platform after the app is on a public HTTPS origin (replace <ORIGIN> with that URL).

Product name: Change Verifier

One sentence: Before anyone changes who a company pays — a new vendor, a vendor’s bank account, a customer’s credit limit, an employee’s direct deposit — the connector runs seven checks, says clear, review or block, and holds the change until a named owner accepts it.

How people use it: An AP clerk, or Muse working for them, pastes a bank-change e-mail. The connector screens the name, the domain and the request, then issues a callback script that uses only a number already on file. A named controller accepts. Nothing writes itself.

Not: A payment system, a bank-data aggregator, or a fraud-scoring black box. Stripe Link is not used.

Build a custom integration to Change Verifier.

It is a remote MCP server over streamable HTTP.
MCP URL: <ORIGIN>/mcp
Authorization: Bearer cv_demo_agent
Connector brief: <ORIGIN>/connectors/muse.md

I want you to verify payee and bank-account changes before anyone is paid. Connect with the official MCP SDK, list the tools, then:

1. get_callback_script on pack pck_harbor. Call only a number on file.
2. record_callback status=confirmed on 8475550142.
3. propose_master_data_change. Keep the owner_token.
4. accept_change as sandra.hale@northbrookprecision.com with a short reason.
5. verify_counterparty for Acme Industrial Supply from ap@acme-industrialsupply.co. Confirm verdict is block and propose is refused.

Save the integration as a reusable skill.

Rules: never call a number that appeared in the request; never accept a blocked pack; name a listed acceptor on every Decision; account numbers are last-four only.

Field	Value
Door	POST /mcp St