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Factstable

com.factstable/factstable in the official MCP registry. Endpoint https://factstable.com/mcp.

The registry describes it as: Verified fact packs for agents: statutory rates, passenger rights, consumer law — cite-or-refuse.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

claude mcp add --transport http factstable https://factstable.com/mcp

{
  "mcpServers": {
    "factstable": {
      "url": "https://factstable.com/mcp"
    }
  }
}

code --add-mcp '{"name":"factstable","type":"http","url":"https://factstable.com/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which.

Let Claude Code check servers as it adds them

With the free lazaretto-guard plugin installed, when Claude Code adds a server for you or writes one into an MCP config, the plugin reads the server's tools first and asks you if one of our rules matches. Install it, restart Claude Code, then ask it to run the command above.

claude plugin marketplace add lazaretto-ai/lazaretto-plugins
claude plugin install lazaretto-guard@lazaretto-plugins

Tools it advertises

benefitsuk_get_fact benefitsuk_list_facts benefitsuk_changes bereavementuk_get_fact bereavementuk_list_facts bereavementuk_changes broadbanduk_get_fact broadbanduk_list_facts broadbanduk_changes cancelflow_get_fact cancelflow_list_facts cancelflow_changes childcareuk_get_fact childcareuk_list_facts childcareuk_changes credituk_get_fact credituk_list_facts credituk_changes debtuk_get_fact debtuk_list_facts debtuk_changes deposituk_get_fact deposituk_list_facts deposituk_changes dismissaluk_get_fact dismissaluk_list_facts dismissaluk_changes drivinguk_get_fact drivinguk_list_facts drivinguk_changes energyuk_get_fact energyuk_list_facts energyuk_changes ferryuk_get_fact ferryuk_list_facts ferryuk_changes flightcomp_get_fact flightcomp_list_facts flightcomp_changes goodsuk_get_fact goodsuk_list_facts goodsuk_changes holidayuk_get_fact holidayuk_list_facts holidayuk_changes insuranceuk_get_fact insuranceuk_list_facts insuranceuk_changes legaluk_get_fact legaluk_list_facts legaluk_changes maternityuk_get_fact maternityuk_list_facts maternityuk_changes mileageuk_get_fact mileageuk_list_facts mileageuk_changes motuk_get_fact motuk_list_facts motuk_changes and 28 more

Tool changes

We compare every full read of this server with the one before. No change in what its tools say has been seen since we started keeping this record on 2026-10-30.

Fingerprint of its tools at our last full read (2026-11-08): 619201676f0b60a4. A client can hash the tools it is served the same way and compare; the full value and a hash per tool are in this page as JSON.

Rather than checking back: subscribe to this server's tool changes (a feed, no account and no address needed). Tool names and dates only, never what a tool says.

Run this server? Show the check in your README

The badge reflects the latest read:

[![MCP tool check](https://lazaretto.dev/mcp-registry/com-factstable-factstable/badge.svg)](https://lazaretto.dev/mcp-registry/com-factstable-factstable)

How this was checked

Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. How tool poisoning works. What we found across the registry. Check another server.

To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.