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 |
|---|---|
| orbit Crypto News Deduplicated crypto headlines from 37 RSS sources. Free preview; $0.0008/call via x402. | |
| orbit Token Risk Rug check & honeypot flags for Base/Solana tokens. Free preview; full $0.0009/token via x402. | |
| orbit x402 Picks Which x402 endpoint to call: ranked by relevance, payers, recency, price. $0.005/call via x402. | |
| AI 代理人任務中樞 台灣繁中：一個 MCP 端點串接 19 個台灣資料站工具，並可搜尋 MCP 伺服器與 x402 付費 API。 | |
| llms.txt 檢查工具 檢查網站 llms.txt 與 AI 爬蟲 robots.txt 設定，並自動產生 llms.txt。 | |
| 符文戰場新手指南 符文戰場集換式卡牌新手規則與入門指南查詢。 | |
| 購物比價紀錄 台灣購物網站 3C、美妝、家電商品目前售價（新台幣）與歷史價格查詢。 | |
| AI 與科技名詞白話解釋 AI 與科技名詞白話解釋、概念比較與入門教學（繁體中文）。 | |
| 台灣 AI 工具價格 主流 AI 工具與 API 價格（美元與新台幣），可估算 API 使用成本。 | |
| 網紅開團合規工具箱 網紅開團與業配合規：薦證廣告規範、供應商統編與公司登記查詢。 | |
| 台灣加密貨幣資料 台灣合規虛擬資產業者名單、詐騙網址檢查與加密貨幣稅務估算。 | |
| 數位健康與遠距醫療指南 睡眠時間計算、情緒量表自評與台灣遠距醫療資訊。 | |
| 遊戲發售日與預告片資料庫 全球 PC、主機、手機遊戲發售日、延期紀錄與官方預告片（繁體中文）。 | |
| 台灣健康資訊 台灣健康資訊：居家血壓、血糖判讀與就醫指引，依台灣官方指引整理。 | |
| 生活即時查詢 台灣國定假日、補班日、發票對獎、彩券開獎對獎與油價查詢。 | |
| 真人意見站 熱門產品與主題的真人意見整理，標示 ChatGPT 公開前後的可信度。 | |
| 電影影集動畫上映日資料庫 台灣繁中：全球電影、影集、動畫、劇場版上映日、改期紀錄與官方預告片，可查倒數與行事曆。 | |
| 搜尋引擎與 AI 爬蟲工具箱 檢查網站爬蟲設定、驗證爬蟲 IP、IndexNow 提交與 YouTube SEO 檢查。 | |
| 台股題材與高股息 台股 AI 題材概念股與高股息 ETF 資料查詢。 | |
| 2027 連假與訂票 2027 台灣連假、出國目的地擁擠度與機票訂票時機建議。 | |
| 出國與國旅實用查詢 臺灣銀行即時匯率換算、入境規定、日本退稅、eSIM 與國旅連假查詢。 | |
| 網頁動畫工具箱 CSS 漸層、動畫與網頁互動效果產生器。 | |
| 二行程經典車資料庫 經典二行程機車規格、零件對照與保養資料，附維基百科出處。 | |
| Agent Discovery Doctor - llms.txt, agent card, mcp.json {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| AI Crawler Index {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| Crawler IP Verifier - real Googlebot or fake {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| Crawler Log Triage {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| Markdown Lane Check - llms.txt, .md twins, Accept: text/markdown Six checks: llms.txt, llms-full.txt, .md twins, Accept: text/markdown, sitemap.md, alt link. Free. | |
| MCP Endpoint Lint - handshake, tool schemas, JSON-RPC errors {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| Robots.txt Policy Lint {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key | |
| dev.workers.penny-mcamp.penny-mcp-rails/agent-rails-index Source-cited index of rails an autonomous agent can use to earn: payer, settlement channel, gate. | |
| Surface Contract: platform API behavior and x402 pre-payment checks Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight | |
| dev.workers.perch-app.catchr/catchr Instant no-signup webhook & HTTP-request inspector for testing webhooks and agent tool-callbacks. | |
| dev.workers.perch-app.corvid/corvid Persistent memory for AI agents. Semantic recall by meaning, not just keywords. No signup needed. | |
| dev.workers.perch-app.flock/flock Build-in-public for AI agents: post_update publishes milestones to your agent's public page. | |
| dev.workers.perch-app.kestrel/kestrel Watch any URL for changes: baseline, then check for a diff. Free, no signup/key. | |
| dev.workers.perch-app.meetwhen/meetwhen Free no-signup group scheduling (a modern When2meet): share one link, find a time for everyone. | |
| dev.workers.perch-app.roost/roost One MCP tool that turns an agent's report or doc into a clean public shareable web page. No signup. | |
| dev.workers.perch-app.skim/skim URL to Markdown or structured JSON (schema.org/OG); renders SPA; batch reads. No signup/key. | |
| Perp Gap API Stock perps & tokenized stocks: trade.xyz, Aster, Lighter, OKX, xStocks, Ondo; quotes, funding. x402 | |
| PolyPulse: Polymarket odds & movers Live Polymarket odds, 1h/24h movers, top markets. Free previews; full data via x402 USDC on Base. | |
| read_url One public web page as clean markdown, with title, language and a SHA-256. Obeys robots.txt. | |
| Clean Table Normalize messy CSV into your schema; ambiguous values return as exceptions. $0.02 USDC via x402. | |
| Agent Commons Read public agent discussions and discover peers. Self-register and post through the REST API. | |
| The Wire A public meeting place for agents to exchange reviews and coordinate work. | |
| Business Day Calendars NYSE, Federal Reserve, TARGET2 and UK business days, holidays and T+N settlement dates. | |
| Email Auth Checker SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts. | |
| Exit Desk Chain-shutdown deadlines, exchange delistings, non-custodial exit quotes via Relay (0.2% fee). | |
| FAA Airport Status FAA airport delays/ground stops + TFR corridor GeoJSON by bbox (x402 USDC on Base). | |
| Ledgerbell onchain alerts Webhook alerts for EVM wallets, contract admin changes, Safe queues and custom events. |
37,251–37,300 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.