Katzilla

Install Katzilla

npx @katzilla/mcp

claude mcp add katzilla -- npx -y @katzilla/mcp

Use Katzilla with Claude Code

Once the server is on your machine, register it with Claude Code so the agent can call it like any other tool. The general pattern is:

claude mcp add codeislaw101-katzilla -- npx @katzilla/mcp

After it's registered, run claude and ask anything that requires Katzilla. Claude Code will negotiate the MCP handshake and surface the server's tools, prompts, and resources to the model automatically. See our Claude Code MCP guide for environment variables, scope flags, and credential handling.

What this server is for

Katzilla sits in the aggregators category. It's community-maintained — check the repo's last-commit date and open issues before depending on it in production. The full description from the source list:

Unified data API for AI agents — 300+ free, public, and government data sources behind a single API key. Access economic (FRED, BLS), environmental (EPA, NOAA), health (CDC, FDA), weather (NWS), financial (SEC, CFPB), science (NASA, arXiv), and 30+ more categories. Install: `npx @katzilla/mcp`.

FAQ

Is Katzilla free?

Yes — every MCP server in the ClawHire directory is open-source or freely available. Some servers proxy to paid APIs (you supply your own keys), but the server itself is free.

Does it work with Claude Desktop / Cursor / Windsurf?

If a client speaks the Model Context Protocol, it can use this server. The transport (stdio vs SSE vs HTTP) needs to match what the client supports, but the server itself is client-agnostic.

How do I report a bug or contribute?

Open an issue or PR on the GitHub repository.