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100
MCP live MCP 2025-06-18 streamable-http

io.github.jamesdfinance-dev/lazaretto

io.github.jamesdfinance-dev/lazaretto

Free lockfile malware check plus paid behavioral scan of packages, agent skills and MCP tools.

Watch this dependency

Get before/after evidence when observed tools, schemas, authentication access, availability or the endpoint changes.

Inspect evidence and set up a watch Share public evidence report
Uptime
100.0%
5 direct probes · 30d
Response
674ms
last probe
Tools
9
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://lazaretto.dev/mcp
Score: 100/100
Handshake verified by our own probe.
why this score
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
9 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
9 items in total; 3 or more earns these points.
pass Describes itself 10/10
94 characters; more than 30 earns these points.

Tools · 9

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 verdic…

check_lockfile

Check EXACTLY-PINNED npm dependencies against published malicious-package advisories (OSV/OpenSSF). Free, anonymous, one call for the whole set. Give EITHER `lockfile`, the full text of a package-lock…

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 v…

scan_lockfile_deep

Behaviorally scan the exactly-pinned dependencies in a lockfile, not just their identities: reads the code of each package and screens for credential theft, exfiltration, obfuscation, prompt injection…

scan_mcp_server

Check an MCP server BEFORE you connect to it. Asks the server to introduce itself and list its tools, then analyzes the text it hands an agent: tool names, descriptions, parameter schemas and server i…

check_mcp_tools

Check tool definitions you ALREADY HOLD, with no network call to anyone. Most MCP servers run locally over stdio and have no endpoint that can be reached, so this is the only way to check them, and yo…

find_attestation

Ask whether anyone has already attested an artifact, BEFORE you install it or pay to scan it. Free and anonymous. Give a package identity like "chalk@5.6.1", an MCP server endpoint URL, or a sha256 co…

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'…

get_free_key

Get a free developer key for the metered tools on this server, without leaving this session. No payment, no account, no card. The key holds a small daily allowance that refills every day, and one cred…

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "io.github.jamesdfinance-dev/lazaretto": {
      "url": "https://lazaretto.dev/mcp",
      "transport": "streamable-http"
    }
  }
}