Fossick

Gives Claude seven tools to prospect across GitHub's 200M+ repositories without cloning anything locally. You can search repos with multi-query relevance ranking, look up PyPI and npm packages, browse any repo's file tree with glob filters, read files at specific commits, jump to definitions for classes and functions, and run full-text or regex searches across all public code. Built for the full discovery loop: find small libraries that deserve attention, vet dependencies before adopting them, see how APIs are actually used in production, and drill into unfamiliar codebases to understand their structure. No git archaeology like blame or PR history, just read-only access to the corpus. Runs via uvx with no installation beyond adding it to your MCP config.