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 |
|---|---|
| io.github.appwrite/mcp-for-api appwrite/mcp-for-api MCP (Model Context Protocol) server for Appwrite | |
| Idea Launch apsquared/idea-launch-plugin Validate SaaS and app ideas with real, managed ad tests from your coding agent. | |
| Niro apxlabs-ai/niro AI pentester for PRs — finds exploitable bugs and hands your developer agent the fix. | |
| Wixzel Voice aqeelshamz/wixzel-voice-sdks Lets Claude, Cursor or any MCP client build voice agents and place real phone calls. | |
| Aqua Voice aqua-voice/aqua-cursor-plugin Search stored Aqua dictations, read transcripts, and manage your dictionary and settings. | |
| io.github.ar-agents/mcp ar-agents/ar-agents Argentine business automation: Mercado Pago, AFIP/ARCA, WhatsApp, banking, shipping (7 packages). | |
| ARAM Mayhem arammayhem/arammayhem-mcp ARAM Mayhem builds, tiers, augments, combos and patch notes with canonical page citations. | |
| Arbitron arbitron-team/arbitron-api Crypto perp funding, spreads and listings, plus your own Arbitron cards, trades, PnL and docs. | |
| io.github.Botagram/trust-gate arbogram/brand-capsule-spec Merchant trust verification for agentic commerce. Verify any merchant before autonomous payment. | |
| Arcaeon arcaeon-io/arcaeon A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check. | |
| AIR SDK arcededev/air-sdk Collective intelligence for browser automation agents. Site capabilities, selectors, and extraction. | |
| io.github.archievi/climbpast archievi/climbpast-mcp Read and edit GA4, Search Console and Google Tag Manager from any MCP client. 29 tools. | |
| io.github.architagrawal/prismsplit architagrawal/prismsplit Split bills from your AI: read bills & balances, create equal splits, request settlements. | |
| ThingsPool architsch/youngjin A web-based 3D sandbox world where AI agents can play with humans and build all kinds of things. | |
| ai.painspotter/painspotter archoor/reddit-insight AI-analyzed startup opportunities from Reddit, Hacker News & Product Hunt, with commercial scores. | |
| io.github.archradhq/deterministic archradhq/arch-deterministic Deterministic IR/IR-LINT validation, policy packs, drift vs exports (archrad). Apache-2.0. | |
| io.github.Archstone-Romania/archstone archstone-romania/archstone Compile your own business capabilities from declarative YAML and serve them as MCP tools. | |
| ARCNM arcnm/arcnm-mcp Manufacturing cost of CNC and sheet-metal parts from STEP or DXF: process plan, times, 10 lot sizes. | |
| Soleil Clusters arconkli/soleilpictures Read and build visual moodboards, shot lists and lookbooks from an AI assistant. | |
| com.arcself/arc-security arcself/arc-security-mcp Scan AI agent skills for 25 attack classes + runtime monitoring. 1,316+ findings. | |
| Veloci by ArcticRex arcticrexorg/veloci-plugins Connect goals, reconcile commitments, and keep work moving with Veloci. | |
| io.github.ardev-lab/fake-star-audit ardev-lab/fake-star-audit Transparent rule-based GitHub fake-star detector — LOW/MEDIUM/HIGH with per-rule evidence. | |
| Flutter MCP Toolkit arenukvern/mcp_flutter Inspect and drive Flutter debug apps/games: semantic snapshots, search, and custom client tools | |
| Argentic argentic-labs-ai/argentic-plugins Argentic MCP server: run and inspect long-running agents on Argentic. | |
| io.github.argon-lab/argon argon-lab/argon Versioned MongoDB sandboxes for AI agents: branch, time-travel, merge, and undo over MCP. | |
| Canli Validation arhancanli/canlicapital Deflated Sharpe and PBO checks. A verdict is not admission to anything and is not a forecast. | |
| Canli Backtest arhancanli/canlicapital Lookahead-free backtests: point-in-time SEC factors, your prices, real costs, every variant counted. | |
| Canli Capital arhancanli/canlicapital 388 finance tools, 56 prompts: quant, SEC and EU filings, fact checks, rates, odds, DeFi, macro. | |
| Canli Fundamentals arhancanli/canlicapital SEC fundamentals point in time: first reported, known as of a date, every restatement. | |
| Canli Markets arhancanli/canlicapital Finance from the sources: SEC and ESEF filings, fact checks, central-bank rates, odds, DeFi, macro. | |
| Canli Paper Trading arhancanli/canlicapital Agent trading on your Alpaca paper account behind pre-trade checks and confirmation tokens. | |
| Canli Quant arhancanli/canlicapital 235 quant tools and 399 strategy sleeves, checked against QuantLib, statsmodels, arch or TA-Lib. | |
| Canli Research arhancanli/canlicapital Canli Capital's open research record: papers, killed candidates, trial counts, live record. | |
| site-spec ariaxhan/site-spec MCP server: audit any website for SEO, accessibility, and AI-searchability, then auto-fix it. | |
| Thinking Brain School — Teaching MCP ariaxhan/thinking-brain-school Guided practice with Thinking Brain School lessons your family has unlocked, inside your AI app. | |
| agentl arimayuji/agentl Validate, plan, preview and run YAML data pipelines (ETL with LLM steps) and debug failed runs. | |
| io.github.stevemilton/buyforme-mcp arispay-inc/arispay-x402 BuyForMe: pay any x402 URL (USD or EUR) with ArisPay delegated custody. Alias of payagent-mcp. | |
| io.github.stevemilton/agentmarketplace-mcp arispay-inc/arispay Discover MCP servers + tools, auto-install into any client, pay for x402 endpoints in USDC. | |
| ai.smithery/arjunkmrm-ahoy2 arjunkmrm/ahoy Create friendly greetings by name, with an optional pirate tone. Explore the origin of 'Hello, Wor… | |
| ai.smithery/arjunkmrm-brave-search-mcp-server arjunkmrm/brave-search-mcp-server Search the web, images, videos, news, and local businesses with robust filters, freshness controls… | |
| ai.smithery/arjunkmrm-clock arjunkmrm/clock Check the current time instantly and explore world timezones by region. Browse available continent… | |
| ai.smithery/arjunkmrm-fetch arjunkmrm/fetch Fetch web pages and extract exactly the content you need. Select elements with CSS and retrieve co… | |
| ai.smithery/arjunkmrm-lta-mcp arjunkmrm/lta-mcp Provide real-time transportation data including bus arrivals, train service alerts, carpark availa… | |
| ai.smithery/arjunkmrm-py-test-2 arjunkmrm/mango-sago Greet people by name with friendly, customizable messages. Toggle Pirate Mode to speak like a swas… | |
| ai.smithery/arjunkmrm-perplexity-search arjunkmrm/perplexity-search Enable AI assistants to perform web searches using Perplexity's Sonar Pro. | |
| ai.smithery/arjunkmrm-scrapermcp_el arjunkmrm/scrapermcp_el Extract and parse web pages into clean HTML, links, or Markdown. Handle dynamic, complex, or block… | |
| ai.smithery/arjunkmrm-sg-bus-test arjunkmrm/sg-bus-test Get real-time bus arrival times for any Singapore bus stop by code, with optional service filterin… | |
| ai.smithery/arjunkmrm-test01 arjunkmrm/time Get the current time in any timezone. Explore concise timezone info to pick the right region. Simp… | |
| ai.smithery/arjunkmrm-tutorials arjunkmrm/tutorials Analyze stocks and SEC filings to surface key insights, from price and volume to insider activity… | |
| com.cortex-mem/memory arjunkumargiri/cortex Shared, persistent memory for AI agents — works with Claude, Kiro, Cursor, or any MCP client. |
20,601–20,650 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.