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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| Name | Risk |
|---|---|
| Header Header design reference — navigation patterns, sticky headers, responsive menus, accessibility. Use when designing website headers or implementing navigation... | |
| Ichimoku Ichimoku reference tool. Use when working with ichimoku in finance contexts. | |
| Icon Generate and convert icons. Use when creating SVGs, building sprite sheets, converting ICO/PNG/SVG, or generating favicon sets. | |
| Image Prompt AI image prompt optimizer. Generate and enhance prompts for Midjourney, DALL-E, and Stable Diffusion. Includes prompt enhancement. | |
| Implied Vol Implied Vol reference tool. Use when working with implied vol in finance contexts. | |
| Indexnow Pro Instant search engine notification via IndexNow protocol. Ping Bing, Yandex, and IndexNow API to index new or updated pages within minutes instead of days. S... | |
| Instagram Caption Instagram文案、精准Hashtag(30个)、Story脚本、Reels脚本、简介优化、内容日历。Instagram caption writer with hashtags, Story scripts, Reels scripts, bio optimization. | |
| Insurance Advisor 保险方案顾问。险种推荐、产品对比、保费计算、理赔指南、定期寿险、健康险方案。Insurance advisor with recommendation, comparison, premium calculation, claim guide, term life. | |
| Intern Report 实习报告生成器。实习总结、周记、心得体会、答辩PPT大纲、深度反思。Intern report generator with weekly logs, summaries, defense outlines, deep reflection. 实习周记、实习心得、毕业实习。Use when writing int... | |
| Inventory Manager Inventory management reference — SKU systems, FIFO/LIFO valuation, barcode formats, ABC analysis, EOQ formula, and WMS migration | |
| Investment Portfolio Track investments with buy/sell records, allocation charts, and P/L analysis. Use when managing a stock or crypto portfolio, rebalancing, or comparing assets. | |
| Ip Advisor Analyze IP addresses with subnet calculation and CIDR notation. Use when planning network addressing. | |
| Jail Jail reference tool. Use when working with jail in sysops contexts. | |
| Jd Writer 招聘JD生成器。职位描述、任职要求、公司介绍、福利待遇、薪资参考、包容性检查。Job description writer for hiring with requirements, benefits, salary benchmark, inclusivity check. 招聘文案、岗位描述、HR工具。Use... | |
| Jensen Jensen reference tool. Use when working with jensen in finance contexts. | |
| Js Compiler Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for JS Compiler concepts, best practices, and implementation patterns. | |
| Json Editor Prettify, minify, and query JSON data with path notation. 支持 JSON 格式美化、压缩及路径提取 (JQ 风格)。Use when debugging APIs, cleaning nested data, or extracting specific... | |
| Kafka Produce, consume, and manage Kafka topics with lag monitoring and data export. Use when publishing messages, consuming topics, monitoring consumer lag. | |
| Labor Law Query Chinese labor law on overtime, leave, contracts, and severance rules. Use when checking overtime rules, calculating severance, reviewing contracts. | |
| Launchpad Reference tool for blockchain and crypto — covers intro, formulas, regulations and more. Quick lookup for Launchpad concepts, best practices, and implementat... | |
| Laundry Track laundry loads, view usage stats, and export reports in multiple formats. Use when logging wash cycles, reviewing patterns, exporting schedules. | |
| Leave Doc 请假条生成器。事假、病假、年假、婚假、产假模板、多天请假自动计算工作日、紧急请假、年假规划。Leave application generator for personal, sick, annual, marriage, maternity leave with workday calculation, eme... | |
| Legal Advisor Generate legal templates for labor, consumer, rental, and traffic disputes. Use when drafting dispute letters, reviewing tenant rights, preparing claims. Sup... | |
| Linea Linea reference tool. Use when working with linea in blockchain contexts. | |
| Linkedin Post LinkedIn文案生成、开头Hook、热门话题标签、轮播内容规划、高质量评论、个人简介优化。LinkedIn post writer with hooks, hashtags, carousel planning, comment templates. | |
| Live Stream Script 直播脚本生成器。带货直播、娱乐直播、知识直播话术、互动设计、开场预热、逼单话术、互动话术库。Live stream script generator for e-commerce, entertainment, education, warmup scripts, closing techniques, inte... | |
| Loan Calculator 贷款计算器。等额本息/等额本金计算、方案对比、提前还款分析、贷款能力评估、还款计划表、再融资分析。Loan calculator with equal installment/principal, comparison, prepayment analysis, affordability, schedule. | |
| Logbook Write journal entries, search history, and export your personal log digitally. Use when journaling thoughts, searching past entries, exporting notes. | |
| Logrotate Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Logrotate concepts, best practices, and implementation patterns. | |
| Machine Learning Roadmap Follow a structured ML roadmap connecting concepts, tools, and learning resources. Use when planning study paths, discovering resources, mapping skills. | |
| Macos Toolkit macOS command line tool for developers – The ultimate tool to manage your Mac. It provides a huge mac cli, shell, bash, cli, command-line-tool, linux. | |
| Macro Helper Excel宏与VBA助手。生成VBA代码、解释宏、调试错误、模板库、格式转换、性能优化。Excel macro and VBA helper with generate, explain, debug, template, convert. | |
| Mileage Log vehicle mileage, review driving trends, and export trip reports for tracking. Use when logging trips, tracking fuel economy, exporting mileage data. | |
| Milestone A focused utility tools tool built for Milestone. Use when you need milestone. | |
| Ml Roadmap A roadmap connecting many of the most important concepts in machine learning, how to learn them and machine learning roadmap, python, data, data-science. | |
| Modbus Modbus communication protocol tool. Use when json modbus tasks, csv modbus tasks, checking modbus status. | |
| Mortgage Calculator Calculate mortgage payments with equal-principal and equal-interest comparisons. Use when comparing loans, calculating payments, evaluating prepayment. | |
| Multicall Analyze multicall operations. Use when you need to understand multicall mechanisms, evaluate protocol security, or reference on-chain concepts. | |
| Multisig Multisig reference tool. Use when working with multisig in blockchain contexts. | |
| Name Generator 起名助手。宝宝取名、公司起名、笔名、网名、英文名。Name generator for babies, companies, pen names, usernames, English names. 取名字、起名大全、姓名测试。Use when naming anything. | |
| Netping Check connectivity with ping, port scan, and DNS lookup in one fast tool. Use when testing reachability, scanning ports, resolving DNS records quickly. | |
| Npv Npv reference tool. Use when working with npv in finance contexts. | |
| Official Doc 公文写作助手。通知、报告、请示、批复、会议纪要、工作总结、格式检查、语气检查、模板库。Official document writer for notices, reports, requests, meeting minutes with format check, tone check, template l... | |
| Omni Tools Reference tool for devtools — covers intro, quickstart, patterns and more. Quick lookup for Omni Tools concepts, best practices, and implementation patterns. | |
| Openapi Openapi reference tool. Use when working with openapi in devtools contexts. | |
| Outline Generate document outlines with TOC, chapter planning, and hierarchy management. Use when structuring documents, planning chapters, creating outlines. | |
| Palette Create and manage color palettes using color theory algorithms. Use when designing UIs or building brand color systems. | |
| Parser Parse JSON, CSV, XML, and logs into structured output. Use when converting formats, validating structure, extracting fields, analyzing nested data. | |
| Paycheck Calculate salary breakdowns with taxes and deductions. Use when estimating take-home pay, checking withholdings, comparing deductions, analyzing components. | |
| Pdf To Markdown Convert PDF files to Markdown with table recognition. Use when extracting text, converting tables, summarizing documents, fixing formatting issues. |
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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.