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Catapult

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MCP server for querying heterogeneous catalysis databases

retospectby retospect
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About

MCP server for querying heterogeneous catalysis databases

README

MCP server for querying heterogeneous catalysis databases. Exposes reaction data, catalysts, and conditions via the Model Context Protocol.

Features

  • Reaction search — query by catalyst, reactant, product, or conditions
  • SQLAlchemy backend — SQLite (default) or PostgreSQL
  • MCP protocol — compatible with any MCP-aware LLM client

Installation

uv pip install -e .
# With PostgreSQL support:
uv pip install -e ".[postgres]"

Usage

catapult-mcp   # starts the MCP server

Dependencies

  • chemdb-common — shared database models and CLI
  • mcp — Model Context Protocol server framework

License

GPL-3.0-or-later — see LICENSE.

from github.com/retospect/catapult-mcp

Install Catapult in Claude Desktop, Claude Code & Cursor

Recommended · one command, every IDE
unyly install catapult

Installs into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.

First time? Get the CLI: curl -fsSL https://unyly.org/install | sh

Or configure manually

Run in your terminal:

claude mcp add catapult -- uvx catapult-mcp

Step-by-step: how to install Catapult

Install Catapult in Claude DesktopInstall Catapult in Claude CodeInstall Catapult in CursorInstall Catapult in VS Code

FAQ

Is Catapult MCP free?

Yes, Catapult MCP is free — one-click install via Unyly at no cost.

Does Catapult need an API key?

No, Catapult runs without API keys or environment variables.

Is Catapult hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install Catapult in Claude Desktop, Claude Code or Cursor?

Open Catapult on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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