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
Set up the Beacon MCP server for me so you can check MCP servers and agent skills against Beacon Intel before I install them. Beacon Intel is a free security index of the MCP servers and skills public registries list. It needs a free Beacon account; there is no API key. - Server name: beacon-managed - Transport: Streamable HTTP - URL: https://mcp.beacon.sh - Auth: OAuth (sign in through the browser when prompted) Add it the way you normally add MCP servers (your CLI command or your MCP config file), walk me through the browser sign-in, then confirm it connects and lists its Intel tools: beacon_intel_lookup, beacon_intel_get_artifact and beacon_intel_check. To finish, use beacon_intel_lookup on one MCP server I already have installed and summarize its risk for me.
Paste this into any coding agent. It adds the server with its own MCP setup.
| Name | Risk |
|---|---|
| Image Processor Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Image Processor concepts, best practices, and implementation patt... | |
| Infra Importer Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Infra Importer concepts, best practices, and implementation patte... | |
| Iperf iperf | |
| Iptables Iptables reference tool. Use when working with iptables in sysops contexts. | |
| It Tools Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for It Tools concepts, best practices, and implementation patterns. | |
| Job Scheduler Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Job Scheduler concepts, best practices, and implementation patterns. | |
| Jsonlint Validate and pretty-print JSON files from the terminal. Use when linting config files, formatting API payloads, checking syntax before deployment. | |
| Ledger Calculate ledger financial metrics and business data. Use when tracking expenses, analyzing investments, or generating financial reports. | |
| Linecount Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Linecount concepts, best practices, and implementation patterns. | |
| Linkbox Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Linkbox concepts, best practices, and implementation patterns. | |
| Liquidity Reference tool for blockchain and crypto — covers intro, formulas, regulations and more. Quick lookup for Liquidity concepts, best practices, and implementat... | |
| Llm Chain LangChain4j is an open-source Java library that simplifies the integration of LLMs into Java applica llm-chain, java, anthropic, chatgpt, chroma, embeddings. | |
| Load Balancer Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Load Balancer concepts, best practices, and implementation patterns. | |
| Lyrics Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Lyrics concepts, best practices, and implementation patterns. | |
| Mediation Mediation and ADR reference — dispute resolution processes, mediator techniques, caucus strategy, settlement agreements. Use when preparing for mediation ses... | |
| Meditation Guide Guided meditation with breathing exercises and session tracking. Use when practicing mindfulness. | |
| Monte Carlo Monte Carlo reference tool. Use when working with monte carlo in finance contexts. | |
| Mood Mood and emotional wellness reference — mood science, regulation strategies, journaling techniques, emotional literacy. Use when understanding emotional patt... | |
| Move Move reference tool. Use when working with move in blockchain contexts. | |
| Movie Review Write film reviews, get recommendations, and manage watchlists with spoiler control. Use when drafting reviews, getting recs, comparing films side by side. | |
| Music Playlist 歌单推荐/乐评。场景歌单、心情推荐、音乐分析、歌词解读、播放列表、年度总结。Music playlist curator with mood, scene recommendations. 歌单、音乐、推荐。 | |
| Namespace Namespace reference tool. Use when working with namespace in sysops contexts. | |
| Nda Generator 保密协议生成器。双向/单向NDA、员工保密、审查、模板库。NDA generator with mutual, unilateral, employee versions. 保密协议、NDA。 | |
| Netstat Display network connections, listening ports, and routing tables. Use when diagnosing network issues. | |
| Netwatch Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Netwatch concepts, best practices, and implementation patterns. | |
| Network Config A powerful open-source tool for managing networks and troubleshooting network problems! network-config, c#, aws-ssm, dns, dns-lookup, icmp. | |
| Networkmanager Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Networkmanager concepts, best practices, and implementation patte... | |
| Nmap Nmap reference tool. Use when working with nmap in devtools contexts. | |
| Note Taker 笔记整理助手。康奈尔笔记法、卡片盒笔记(Zettelkasten)、思维导图笔记、会议笔记、课堂笔记、笔记整理。Note-taking with Cornell method, Zettelkasten, mind maps, meeting notes, lecture notes. | |
| Notelane Organize notes as a personal knowledge base with tagging and full-text search. Use when capturing notes, searching entries, building a knowledge base. | |
| Notification Manage terminal notifications with scheduling, filtering, and delivery tracking. Use when sending alerts, filtering notifications, confirming delivery. | |
| Novel Manage novel data — chapters, characters, plots — from the terminal fast. Use when outlining chapters, tracking characters, organizing plot timelines. | |
| Omni Tool The all-in-one tool to boost your productivity ⌨️ omni-tool, javascript, bookmark, bookmarks, bookmarks-manager, chrome. | |
| Oven Track oven usage and cooking schedules. Use when logging bake sessions, setting cook reminders, checking inventory, reviewing stats. | |
| Page Saver Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Page Saver concepts, best practices, and implementation patterns. | |
| Paraphraser 文本改写/降重、学术改写、简化表达、正式化、扩写、前后对比。Paraphrase, rewrite for academic tone, simplify, formalize, expand. | |
| Password Manage passwords with generation, strength checks, and storage. Use when creating credentials, auditing strength, rotating secrets, checking breaches. | |
| Persona Forge 角色设计工具。创建角色档案、背景故事、性格特征、人物关系、角色弧光、角色卡。Character creator with profiles, backstories, personality traits, relationships, character arcs. | |
| Pickup Lines Generate witty romantic lines for any occasion. Use when drafting confessions, writing humorous openers, composing anniversary notes, crafting farewells. | |
| Pinduoduo Listing 拼多多商品文案。标题优化、详情页、SKU描述、百亿补贴文案、价格战策略、评价回复、秒杀文案。Pinduoduo listing generator with title optimization, detail page, SKU descriptions, pricing strategy, review re... | |
| Poem Generator 诗歌生成助手。现代诗、俳句、对联、藏头诗、古诗翻译。Poem generator with free verse, haiku, couplets, acrostic poems. | |
| Policy Reference tool for business — covers intro, quickstart, patterns and more. Quick lookup for Policy concepts, best practices, and implementation patterns. | |
| Policy Reader Reference tool for business — covers intro, quickstart, patterns and more. Quick lookup for Policy Reader concepts, best practices, and implementation patterns. | |
| Popover Generate popover UI elements and design assets. Use when building interfaces, creating visual components, or styling web pages. | |
| Ppe Personal protective equipment tracker. Use when json ppe tasks, csv ppe tasks, checking ppe status. | |
| Privacy Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Privacy concepts, best practices, and implementation patterns. | |
| Procmon Watch and control running processes in real time. Use when scanning active PIDs, monitoring resource spikes, reporting trees, alerting on crashes. | |
| Product Desc 产品描述生成器。产品文案撰写、SEO优化、卖点提炼、竞品对比、多语言本地化。Product description writer with SEO, bullet points, comparison. | |
| Profile Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Profile concepts, best practices, and implementation patterns. | |
| Proofreader 校对/错别字检查、语法纠错、文风统一、一致性检查、可读性评分、校对报告。Proofreading with typo detection, grammar correction, style consistency, readability scoring. |
17,651–17,700 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.