Ecosyste.ms Package Data
OfficialEnables querying package ecosystem data from ecosyste.ms, including package metadata, versions, secu...
Click the "Install Now" button in the FastMCP connection interface to add a new MCP server entry, then open the environment variable (ENV) form for that server and fill values there (the FastMCP connection interface is where ENV keys/values are entered).
Note: this MCP ships with a bundled SQLite database so no ENV is required for normal use — you can leave the ENV blank and the server will use the included database. (github.com)
If you want to use a custom database instead of the bundled one, obtain a copy of critical-packages.db by one of these methods:
- Download the prebuilt database from the repository/releases (file named critical-packages.db or critical-packages.db.gz). (github.com)
- Install the NPM package which includes the DB: npm install @ecosyste-ms/critical (the package includes a pre-built critical-packages.db). (github.com)
- Build/download the DB via the package CLI: npx @ecosyste-ms/critical (or npx @ecosyste-ms/critical -o my-db.db to write to a custom path). (github.com)
Place the resulting critical-packages.db file where your FastMCP host can access it (for example /home/you/data/critical-packages.db or C:\data\critical-packages.db).
In the FastMCP ENV form (opened from the server entry you created with "Install Now") add the key ECOSYSTEMS_DB_PATH and set its value to the absolute path of your database file, e.g. ECOSYSTEMS_DB_PATH=/full/path/to/critical-packages.db.
Save the connection in FastMCP and start the MCP server. Verify the server is healthy (the MCP exposes a health_check / get_database_info tool you can call to confirm the database is loaded). (github.com)
If you prefer not to set ECOSYSTEMS_DB_PATH, you can alternatively place critical-packages.db in the MCP working directory — the server will use it automatically. (github.com)
How to Install Ecosyste.ms Package Data
Install Ecosyste.ms Package Data MCP server with one click through FastMCP. Choose your preferred AI development tool below:
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Click "Claude Desktop" in Quick Start
Cursor IDE
Click "Cursor IDE" in Quick Start
VS Code
Click "VS Code" in Quick Start
Ecosyste.ms Package Data is an officially maintained MCP server, verified by the FastMCP team.
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