io.github.jamesdfinance-dev/lazaretto

pkg:npm:lazaretto-mcp

Free lockfile malware check plus paid pre-install scan of any skill, tool, or package.

transport:: remote + stdio
credential class:: self-provisionable
repo:: https://github.com/jamesdfinance-dev/lazaretto-mcp

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Tools

check_lockfile
Check every EXACTLY-PINNED dependency in a lockfile against published malicious-package advisories (OSV/OpenSSF). Free, anonymous, one call for the whole tree. Accepts the contents of a package-lock.json, yarn.lock, or pnpm-lock.yaml. Only exact versions can be answered: a range like ^5.0.0 has no definitive answer because a compromised release usually sits between clean ones. Fail-closed: anything that could not be checked is returned in `unverified`, so an empty `malicious` list is an all-clear only when `unverified` is empty too.
shallow
known_bad_lookup
Check a SHA-256 against Lazaretto's known-bad indicator set (refreshed daily from abuse.ch). Free and anonymous. A miss only means this exact hash is not in the indicator set; it is not a clean verdict on the artifact.
shallow
scan_artifact
Deterministically analyze a package, repo, skill, or file for malicious behavior (credential theft, data exfiltration, obfuscation, prompt injection aimed at the agent, install scripts) and return a verdict (malicious, flagged, clear, error) with the exact evidence and a hash of what was scanned. Requires prepaid credits presented as an X-API-Key request header; consumes one credit per successful scan. Buy credits at POST https://lazaretto.dev/v1/credits/topup. For a free check, use known_bad_lookup.
shallow
verify_attestation
Verify a Lazaretto scan attestation that another agent (or a README, or a lockfile) handed you, WITHOUT re-scanning or paying. Free and anonymous. Returns whether the signature is valid and Lazaretto's, the attested claims (verdict, risk, and the subject the verdict is about), and a `contradicted` flag if a previously-clear subject is now known-bad. You MUST still confirm the artifact you are about to run matches `claims.sub` (its sha256, or its package identity).
shallow

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