Bumblebee is a read-only inventory collector for package, extension, and developer-tool metadata on developer endpoints, built to check exposure to known software supply-chain compromises. It answers a narrow supply-chain response question: when an advisory names a package, extension, or version, which developer machines show a match in their on-disk metadata right now? SBOMs help answer what shipped, and EDR helps answer what ran or touched the network, but supply-chain response often needs a different view: messy local state across lockfiles, package-manager metadata, extension manifests, and developer-tool configurations. Bumblebee turns that scattered on-disk state into structured NDJSON component records and, when given an exposure catalog, flags exact matches for fast, read-only exposure checks. Key properties: - Single static binary, zero non-stdlib dependencies - Three scan profiles (baseline, project, deep) for different populations - Reads lockfiles, package-manager install metadata, extension manifests, and MCP JSON configs — without executing any package manager - Emits NDJSON output suitable for log-ingest pipelines