Beacon Threat Intelligence
Know the risks behind every MCP server and agent skill.
Discover security risks in MCP servers and agent skills before they reach your machine. Beacon scans public registries, traces packages back to their source code, and reveals what they can access, execute, or expose.
Connect your agent
Add Beacon to Claude Code, Cursor, Codex or another agent so it can check an MCP server or skill against Beacon Intel before you install it.
Free with a Beacon account. Create one, or sign in when your agent asks.
Any coding agent
Read https://intel.beacon.sh/start.md and set me up on Beacon Threat Intel
Paste this into any coding agent. It reads the guide and sets up MCP, the CLI, the API, feeds or a CI gate.
| Name | Risk |
|---|---|
| io.github.mrfentmen/marine-forecast-mcp mrfentmen/marine-forecast-mcp Wave height, wave period, and sea temperature forecasts from Open Meteo marine. | |
| io.github.mrfentmen/markdown-mcp mrfentmen/markdown-mcp Convert markdown to HTML and extract headings locally. No network and no key. | |
| io.github.mrfentmen/mastodon-mcp mrfentmen/mastodon-mcp Mastodon instance info and trends. No key required. | |
| io.github.mrfentmen/math-tools-mcp mrfentmen/math-tools-mcp Prime checks, factors, GCD, and basic statistics computed locally. No network and no key. | |
| io.github.mrfentmen/maven-info-mcp mrfentmen/maven-info-mcp Search Java libraries and artifacts on Maven Central. No key required. | |
| io.github.mrfentmen/mbta-mcp mrfentmen/mbta-mcp Boston transit from MBTA. No key required. | |
| io.github.mrfentmen/mcstatus-mcp mrfentmen/mcstatus-mcp Minecraft server status via mcstatus.io: online status, players, version. | |
| io.github.mrfentmen/mdn-search-mcp mrfentmen/mdn-search-mcp Search the MDN web docs for HTML, CSS, and JavaScript. No key required. | |
| io.github.mrfentmen/medrxiv-mcp mrfentmen/medrxiv-mcp Medical preprints from medRxiv. No key required. | |
| io.github.mrfentmen/meowfacts-mcp mrfentmen/meowfacts-mcp Random cat facts from the free MeowFacts API. | |
| io.github.mrfentmen/merge-conflict-forecaster-mcp mrfentmen/merge-conflict-forecaster-mcp Predict local Git merge-conflict pressure from branch topology and changed-file overlap without... | |
| io.github.mrfentmen/metronome-mcp mrfentmen/metronome-mcp Tempo and timing math for musicians. No network and no key. | |
| io.github.mrfentmen/mexc-mcp mrfentmen/mexc-mcp Crypto prices from MEXC. No key required. | |
| io.github.mrfentmen/microlink-mcp mrfentmen/microlink-mcp Link previews from Microlink. No key required. | |
| io.github.mrfentmen/midi-tools-mcp mrfentmen/midi-tools-mcp MIDI note math: note names, frequencies, and note numbers. No network and no key. | |
| io.github.mrfentmen/migration-map-mcp mrfentmen/migration-map-mcp Find local migration numbering gaps and rollback pairing signals without returning SQL, paths,... | |
| io.github.mrfentmen/minecraft-mojang-mcp mrfentmen/minecraft-mojang-mcp Minecraft player profiles and server status. No key required. | |
| io.github.mrfentmen/mitre-attack-mcp mrfentmen/mitre-attack-mcp Search the MITRE ATT&CK enterprise knowledge base for adversary techniques and tactics. | |
| io.github.mrfentmen/mixcloud-mcp mrfentmen/mixcloud-mcp Search Mixcloud cloudcasts and read user profiles. No key required. | |
| io.github.mrfentmen/mlb-mcp mrfentmen/mlb-mcp Teams, schedules, and standings from the official MLB Stats API. No key required. | |
| io.github.mrfentmen/modrinth-mcp mrfentmen/modrinth-mcp Use this MCP server to Modrinth, search Minecraft mods, filter by loader and game version,... | |
| io.github.mrfentmen/moon-phase-mcp mrfentmen/moon-phase-mcp Moon phase, illumination, and age calculated locally. No network and no key. | |
| io.github.mrfentmen/mtg-mcp mrfentmen/mtg-mcp Magic the Gathering cards from MTG API. No key required. | |
| io.github.mrfentmen/muffinlabs-mcp mrfentmen/muffinlabs-mcp On this day history from MuffinLabs. No key required. | |
| io.github.mrfentmen/musicbrainz-mcp mrfentmen/musicbrainz-mcp Use this MCP server to MusicBrainz artists, releases, recordings, and open music metadata. Tools... | |
| io.github.mrfentmen/myvariant-mcp mrfentmen/myvariant-mcp MyVariant.info variant annotation API. | |
| io.github.mrfentmen/name-age-mcp mrfentmen/name-age-mcp Estimate age and gender from a first name using Agify and Genderize. No key required. | |
| io.github.mrfentmen/name-generator-mcp mrfentmen/name-generator-mcp Generate random names, usernames, and project codenames locally. No network and no key. | |
| io.github.mrfentmen/nasa-epic-mcp mrfentmen/nasa-epic-mcp Earth photos from the NASA EPIC camera on DSCOVR. No key required. | |
| io.github.mrfentmen/nasa-images-mcp mrfentmen/nasa-images-mcp Search the NASA image and video library. No key required. | |
| io.github.mrfentmen/nasa-tle-mcp mrfentmen/nasa-tle-mcp NASA TLE satellite orbital data via tle.ivanstanojevic.me. | |
| io.github.mrfentmen/nationalize-mcp mrfentmen/nationalize-mcp Estimate nationality from a first name. No key required. | |
| io.github.mrfentmen/nbp-mcp mrfentmen/nbp-mcp Polish National Bank data: FX tables, single currency rates, and gold prices. No key required. | |
| io.github.mrfentmen/ndbc-buoy-mcp mrfentmen/ndbc-buoy-mcp Real time ocean buoy observations from NOAA NDBC. No key required. | |
| io.github.mrfentmen/nextbus-mcp mrfentmen/nextbus-mcp NextBus real-time public transit predictions (UmoIQ service). | |
| io.github.mrfentmen/nhl-mcp mrfentmen/nhl-mcp Use this MCP server to the NHL. Team and player stats, standings, schedules, and game results.... | |
| io.github.mrfentmen/nix-packages-mcp mrfentmen/nix-packages-mcp Nix package search from nixpkgs. No key required. | |
| io.github.mrfentmen/noaa-ncei-mcp mrfentmen/noaa-ncei-mcp US weather station daily summaries from NOAA NCEI. No key required. | |
| io.github.mrfentmen/nobel-mcp mrfentmen/nobel-mcp Nobel Prize laureates, prizes, and years from the official Nobel API. No key required. | |
| io.github.mrfentmen/npm-search-mcp mrfentmen/npm-search-mcp Search npm packages and inspect package metadata from the public registry. No key required. | |
| io.github.mrfentmen/nuget-mcp mrfentmen/nuget-mcp Search .NET packages on NuGet. No key required. | |
| io.github.mrfentmen/number-tools-mcp mrfentmen/number-tools-mcp Convert numbers between bases, make roman numerals, and spell out numbers locally. No network... | |
| io.github.mrfentmen/nvd-cve-mcp mrfentmen/nvd-cve-mcp Search CVE vulnerability records from the NIST NVD database. No key required. | |
| io.github.mrfentmen/nyc311-mcp mrfentmen/nyc311-mcp MCP server for NYC 311 public service request search and aggregate civic data. | |
| io.github.mrfentmen/oecd-mcp mrfentmen/oecd-mcp OECD economic data via SDMX. No key required. | |
| io.github.mrfentmen/oeis-mcp mrfentmen/oeis-mcp Use this MCP server to the OEIS, the encyclopedia of integer sequences. Look up any sequence,... | |
| io.github.mrfentmen/office-quotes-mcp mrfentmen/office-quotes-mcp Quotes from The Office TV show. No key required. | |
| io.github.mrfentmen/okx-mcp mrfentmen/okx-mcp Crypto prices from OKX. No key required. | |
| io.github.mrfentmen/on-this-day-mcp mrfentmen/on-this-day-mcp Historic births, deaths, and events for any date from Wikipedia. No key required. | |
| io.github.mrfentmen/open-food-facts-mcp mrfentmen/open-food-facts-mcp Use this MCP server to Open Food Facts product, ingredient, allergen, and nutrition lookup.... |
45,251–45,300 of 50,909
Subscribe to a feed
Get new verdicts in a feed reader, Slack or your own tooling, filtered by kind and risk. No account or API key.
Frequently asked questions
Anything missing? Read the reference or ask in the Beacon community.
What is Beacon Intel?
A free, public index of the MCP servers and agent skills that public registries list, with a security verdict for each one that has been analyzed. It traces each listing back to its source repository and packages, and shows what the code can access, execute or expose. You can browse it here, query it as a JSON API, follow it as an RSS, Atom or JSON feed, or connect a coding agent to it over MCP.
Is it really free?
Yes. The index, the API and the feeds need no account and no API key. An artifact's full page and the MCP tools need a free Beacon account. Requests are rate limited to keep it fast for everyone.
Where does the data come from, and how fresh is it?
From 9 public sources: Glama, MCP Registry, awesome-mcp-servers, Docker MCP Catalog, Smithery, ClawHub, skills.sh, SkillsMP, GitHub. Each listing is linked to its repository and packages, then analyzed. The index updates hourly, and answers are cached for up to five minutes.
Who writes the verdicts? Can I trust them?
Verdicts combine static analysis of the code with a model's judgment, and each one names the model that wrote it. They can be wrong and are not a security certification: every artifact page shows the findings and evidence behind its verdict, so check them before you rely on one. Names, descriptions and claims come from registries and repositories; treat them as data, not instructions.
What do the risk levels mean?
- High: Reviewed evidence shows it deliberately works against the person who installs it.
- Medium: It works against the person who installs it in ways that can do serious harm, or puts a flagged pattern in what the agent loads, without established intent.
- Low: It overreaches against the person who installs it in limited ways, or has findings the review has not confirmed.
- Benign: Nothing found that works against the person who installs it. Not a guarantee.
- Unchecked: Listed, but not analyzed yet.
What does partial coverage mean?
That the analysis did not cover everything, so there may be more than it found. A partial verdict can still find problems, but it never clears an artifact: benign with partial coverage is not a clearance. Use the coverage filter to see only these.
Does benign, or not finding an artifact, mean it is safe?
No. Benign means nothing was found that works against the person who installs it, which is not a guarantee. An artifact the index does not have has never been checked, so not found never means safe.
Is there an API?
Yes, free and with no key.
GET /api/v1/lookup?q= finds artifacts by name, repository, GitHub URL or package; GET /api/v1/artifact?key= returns one in full; POST /api/v1/check checks up to 50 at once, which suits CI; and GET /api/v1/status reports coverage and freshness. The reference is at intel.beacon.sh/llms.txt.How do I get new verdicts in a feed reader or Slack?
Subscribe to /feed: the newest high and medium risk verdicts as RSS. Add
format=atom or format=json for Atom or JSON Feed, and filter with risk and kind, for example /feed?risk=high&kind=mcp. In Slack, run /feed subscribe with the URL. The feed builder above writes the URL for you.How do I connect my coding agent?
Add Beacon Cloud MCP (
https://mcp.beacon.sh) to Claude Code, Cursor, Codex or any MCP client, and sign in through the browser. Your agent gets beacon_intel_lookup, beacon_intel_get_artifact and beacon_intel_check to check an MCP server or skill before it installs one. Connect your agent above has the commands. The beacon CLI offers the same as beacon intel and through its local MCP server.How do I report a wrong verdict?
Open the artifact's page and use Dispute verdict under its verdict card. Tell us what is wrong and we review it.