Katzilla

io.github.codeislaw101Published by GitHub account codeislaw101v0.1.1Updated Oct 24, 2026

300+ free public & government data sources behind one API key, for AI agents.

VerifiedSTDIODesktop onlyData & Analytics

Server details

Identifier: io.github.codeislaw101/katzilla
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified the GitHub account codeislaw101 for this listing. That does not show the account is the product's maker.

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Overview

AI-generated overview

Katzilla is a local MCP server that gives an AI assistant access to 300+ free public and government data sources through a single API key.

What you can do: Connect an assistant to a large catalog of free public and government data sources through one API key, so it can query that data on your behalf. The manifest lists no individual tools, so the exact operations are not documented here. It runs as a local process on your machine over stdio.
When to use it: Worth considering when you want an assistant to pull from public or government datasets without wiring up each source separately, and you are willing to obtain a Katzilla API key.
Requirements: Runs as a local process over stdio, installed from the npm package @katzilla/mcp, so Node.js is needed. Requires a Katzilla API key supplied in the KATZILLA_API_KEY environment variable; the manifest says a free key is available from the provider's dashboard. Desktop only.

Before you install

You must supply a Katzilla API key as KATZILLA_API_KEY, which the server can read; treat it as a secret. Queries and the data you request pass through Katzilla's API, a third party. The manifest lists no tools, so review what the server can actually do before installing.

Installation

In SourceWeft

Open Katzilla in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.1.1LatestSep 16, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
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Auth declared10 pts
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Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.