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.
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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.
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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 |
|---|---|
| Song Write original songs with guided lyric development, chord progressions, melody contours, and AI music generator prompts for composers at any level. | |
| Sonoff Control and automate SONOFF devices with eWeLink cloud workflows, LAN and DIY mode operations, and safe multi-device execution. | |
| Spaced Repetition Scheduling review of material at expanding intervals to optimize long-term retention. | |
| Spain Plans Spain travel with local-level picks: named restaurants, regional rules, timing, booking windows, and tourist-trap avoidance. Use when the user plans or books a trip to Spain, builds an itinerary, or asks about Madrid, Barcelona, Sevil | |
| Spanish Write Spanish that sounds human. Not formal, not robotic, not AI-generated. | |
| Speak Writes and converts text into natural speech-ready output for any TTS engine: normalization, prosody, pronunciation, and voice preferences. Use when a reply will be read aloud or sent to a voice channel, when writing voiceover scripts, spok | |
| Speech to Text Transcription Transcribe audio and video files to text with speaker detection, timestamps, and format conversion. | |
| Spreadsheet Read, write, and analyze tabular data with schema memory, format preservation, and multi-platform support. | |
| SQL Writes, reviews, and optimizes SQL queries; designs schemas, indexes, and constraints; plans migrations for any relational database. Use when a query is slow, EXPLAIN shows a sequential scan, or an index is ignored; when rows come back dupl | |
| SQLite Use SQLite correctly with proper concurrency, pragmas, and type handling. | |
| SSL Set up HTTPS, manage TLS certificates, and debug secure connection issues. | |
| Startup Orchestrates startup work: routes tasks to specialized agents and applies stage-appropriate priorities. Use when advising founders on product-market fit, growth, hiring, fundraising, runway, or burn decisions. | |
| Statistics Build statistical intuition from basic probability to advanced inference. | |
| Stellar Assist with Stellar XLM transactions, anchors, memo requirements, and cross-border payments. | |
| Stock Images Source free stock photos and placeholder images with direct URLs for Unsplash, Pexels, Pixabay, and Lorem Picsum. | |
| Stock Market Analyze stock market setups with thesis checks, catalyst mapping, risk controls, and explicit trade or no-trade decisions. | |
| Storage Choose and architect storage systems for applications with the right tradeoffs. | |
| Store Manage a physical store of any kind with opening routines, inventory control, staffing, cash discipline, merchandising, and weekly reviews. | |
| Storybook Build component stories with proper args, controls, decorators, and testing patterns. | |
| Storytelling Craft clear, emotionally resonant stories with audience-first framing, narrative arc control, and channel-specific rewrites. | |
| Strategy Design robust strategies for any domain with proven frameworks, cognitive bias protection, and constraint-aware recommendations. | |
| Stripe API Integration Builds and debugs Stripe integrations: payments, subscriptions, Checkout, invoices, webhooks, Connect, disputes, tax. Use when a charge, refund, payout or subscription behaves wrong, when a webhook never arrives or its signature fails, when | |
| Study Runs a student's whole term: course load, weekly plan, lectures, notes, retrieval practice, coursework deadlines, grades, and exams. Use when a syllabus, reading list, or semester has to become a weekly schedule; when an exam, midterm, fina | |
| Studying Plans study schedules and runs study sessions with retrieval practice, spaced review, and exam countdown protocols. Use when a student prepares for an exam, midterm, final, or certification, asks how to study, revise, memorize, or cram, say | |
| Subscriptions Build a personal subscription tracker for managing recurring payments, renewals, and cutting waste. | |
| Sui Network Assist with SUI transactions, object model, staking, and Move smart contracts. | |
| Summarizer Summarizes any source without losing the claim: documents, meetings, papers, threads, transcripts, data, and code changes. Use when asked to summarize, condense, shorten, recap, distill, or write a TLDR, abstract, or executive summary; when | |
| Suno Creates music with Suno: crafts style prompts and structured lyrics, generates via API or browser, builds long tracks, covers, and personas. Use when the user wants a song, jingle, anthem, podcast intro, or background track, wants lyrics tu | |
| Svelte Builds, debugs, and reviews Svelte and SvelteKit apps: runes, stores, snippets, load functions, form actions, adapters. Use when the UI does not update after a state change, an effect loops forever ("effect_update_depth_exceeded"), props or | |
| SVG Create and optimize SVG graphics with proper viewBox, accessibility, and CSS styling. | |
| Sweden Plan Sweden trips with verified entry rules, region-specific routing, rail-ferry logistics, and practical seasonal safety. | |
| Swedish Write Swedish that sounds human. Not formal, not robotic, not AI-generated. | |
| Swift Writes, debugs, and optimizes Swift — concurrency, ARC leaks, optionals, generics, SwiftUI state, and packages. Use when writing or reviewing Swift code, when a build won't type-check or the compiler "is unable to type-check this expression | |
| Switzerland Plan Switzerland trips with Alpine rail and mountain logistics, verified entry rules, scenic routing, and practical local execution. | |
| Sydney Navigate Sydney as visitor, resident, tech worker, student, or entrepreneur with neighborhoods, beaches, transport, visas, and local insights. | |
| OpenAI Symphony Set up and run OpenAI Symphony with isolated issue workspaces, workflow contracts, and unattended Codex orchestration for Linear projects. | |
| Symptoms Build a private symptom tracker for logging health patterns and preparing for doctor visits. | |
| Sync Synchronize files and directories between local, remote, and cloud storage reliably. | |
| Synology Plan, harden, and recover Synology NAS and DSM setups with storage design, backup discipline, remote access, and Container Manager workflows. | |
| Synthesize Combine multiple sources into unified insights with source tracking, conflict resolution, and coverage verification. | |
| Sysadmin Manage Linux servers with user administration, process control, storage, and system maintenance. | |
| Systems Architect Design infrastructure, networks, and cloud systems with integration, reliability, and security patterns. | |
| Tai Chi (Practice Planner, Form Coach, Balance Tracker) Build tai chi practice plans, improve form, and track balance-focused sessions with safe progressions, concise coaching cues, and weekly reviews. | |
| Tailwind CSS Writes and debugs Tailwind CSS: utility classes, theme config, dark mode, variants, plugins, and build setup. Not for CSS mechanics themselves — stacking contexts, flex sizing, and cascade behavior belong to the `css` skill. Use when a clas | |
| Taiwan Plan Taiwan trips with city-specific food, rail, hot spring, and regional tips that avoid tourist filler and logistics mistakes. | |
| Talk Set up real-time voice conversations. Phone calls, voice agents, live speech. | |
| Tapo Camera Connect to Tapo cameras, verify local access, capture snapshots, and inspect frames with local-first RTSP workflows and safe fallbacks. | |
| Task List Run a conversational task list with Inbox, Today, Upcoming, recurring tasks, waiting items, projects, and review loops that stay trustworthy. | |
| Taste Develop refined aesthetic judgment by learning from human feedback, asking genuine questions about quality, and calibrating over time. | |
| Tattoo Plan, research, and prepare for tattoos with artist discovery, design exploration, cultural research, and aftercare guidance. |
39,601–39,650 of 108,824
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.