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 |
|---|---|
| emperor-mail yarenty/emperor-mail Email over IMAP and SMTP: search and read messages and attachments; draft and send when switched on | |
| emperor-pdf yarenty/emperor-pdf Read, search and render the PDFs in one folder; merge, extract and create them from Markdown. | |
| Vikunja tasks yarenty/emperor-vikunja Vikunja tasks for MCP clients: list and read tasks and projects; with --writable, change them. | |
| tableski yarenty/tableski Every spreadsheet is a table: Excel, CSV, Parquet and JSON as SQL tables for AI agents. | |
| Salesforce AgentForce CKG yarmoluk/ckg-agentforce Salesforce AgentForce knowledge graph — 40 nodes, Einstein Trust Layer, 11x fewer tokens than RAG. | |
| io.github.Yarmoluk/ckg-mcp yarmoluk/ckg-mcp 97-domain knowledge graphs for AI agents — 4× F1 of RAG, 11× fewer tokens. MCP-native. | |
| NVIDIA NemoClaw CKG yarmoluk/ckg-nvidia-nemoclaw NVIDIA NemoClaw knowledge graph — 55 nodes, F1 0.576 (+269% vs RAG), 11x fewer tokens. MCP-native. | |
| io.github.yasaminfayyaz/milatexai yasaminfayyaz/milatexai Edit your Overleaf LaTeX projects from Claude and ChatGPT; every change is a real Git commit. | |
| Postgres Secured (Aegis Zero-Trust) yash-0620/postgres-mcp Enterprise PostgreSQL MCP secured by Aegis Zero-Trust to block unauthorized SQL injections. | |
| io.github.yashdoke7/skeletongraph yashdoke7/skeletongraph Zero-LLM structural code retrieval for AI coding agents, served over MCP. | |
| rednote-gate yashshelar007/rednote-gate MCP server for one throwaway RedNote account. Every write waits for a human Approve click. | |
| SuperMemory yashvanthange/supermemory MCP-first agent learning: capture failures, validate lessons, retrieve context, improve. | |
| US Spot Bitcoin & Ethereum ETF Flows yasinozen35/free-etf-flows-mcp Daily net flows for US spot Bitcoin & Ethereum ETFs (IBIT, FBTC, GBTC, ETHA) with per-fund history | |
| io.github.yasmanycastillo/model-shunt yasmanycastillo/model-shunt Model routing for AI agents: delegate bulk reads & boilerplate to cheap worker models. | |
| Oura Ring yasuakiomokawa/oura-mcp MCP server for Oura Ring API v2 (sleep, activity, readiness, heart rate, workouts). | |
| ApproveKit yateshaw/approvekit Audit apps against App Store, Google Play and Google OAuth review rules; get the required docs. | |
| Yatmo neighbourhood data for real estate yatmo/yatmo-mcp Real estate neighbourhood data: nearest school, shops, transport with travel times, 25 countries. | |
| İTÜ MCP yatuk/itu-mcp İTÜ Ninova, OBS, Portal, kampüs servisleri ve kütüphane için MCP sunucusu | |
| when-free yauhenbichel/when-free Which days and times am I free? Reads your calendar feeds and answers with the slots you can offer. | |
| Yaver yaver-io/yaver.io Phone-first OpenCode MCP for trusted devices: run, build, deploy, and manage endpoint-local tools. | |
| Ansible MCP Server yawlabs/ansible-mcp Ansible checkout truth: module specs, task args, roles, inventory, plays, upgrade impact | |
| Yaw Labs AWS MCP yawlabs/aws-mcp AWS MCP server — call any AWS API from AI assistants, with first-class SSO re-login | |
| Caddy MCP Server yawlabs/caddy-mcp MCP server for managing Caddy web servers via the admin API | |
| Electron MCP Server yawlabs/electron-mcp Electron.js MCP server — IPC scaffolding, security auditing, build tooling for AI assistants | |
| Fetch MCP Server yawlabs/fetch-mcp HTTP fetch MCP server: SSRF protection, HTML-to-markdown, reader mode, metadata extraction | |
| LemonSqueezy MCP Server yawlabs/lemonsqueezy-mcp LemonSqueezy MCP server for managing your store from AI assistants | |
| npm Registry MCP Server yawlabs/npmjs-mcp npm registry MCP server — package intelligence, security audits, dependency analysis | |
| PostgreSQL MCP Server yawlabs/postgres-mcp PostgreSQL MCP server - query, schema introspection, explain, and health checks for AI assistants | |
| Redis MCP Server yawlabs/redis-mcp Read-first Redis MCP: SCAN key explorer, keyspace/TTL/memory/slowlog stats, DBA advisor | |
| SSH MCP Server yawlabs/ssh-mcp MCP server for SSH operations with built-in diagnostics | |
| Tailscale MCP Server yawlabs/tailscale-mcp Tailscale MCP server for managing your tailnet from AI assistants | |
| Terraform CWD MCP Server yawlabs/terraform-cwd-mcp Terraform working-dir truth: pinned provider schemas, plans, state, modules, upgrade impact | |
| Tolca yayabough/tolca Know who you are paying before you pay: Québec contractor and company checks, plus web search. x402. | |
| Claude Context Sync ybin4548/claude-context-sync Share context, detect conflicts, and message across parallel Claude Code sessions | |
| io.github.yBookoff/thebrain ybookoff/thebrain-mcp MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API | |
| io.github.ycjcl868/mcp-server-fear-greed ycjcl868/mcp-server-fear-greed An MCP server for mcp-server-fear-greed | |
| Formosa MCP — Taiwan data ycsmiley/formosa-mcp Taiwan data for AI agents: THSR/TRA timetables, TWSE/TPEx stocks, invoice lottery, garbage, outages | |
| io.github.Yedigarli/scandiary yedigarli/scandiary-cli Accessibility check (axe-core, WCAG A/AA) for sites you build, with a fix prompt for your AI tool. | |
| Yeelight Metadata MCP Server yeelight/yeelight-metadata-mcp Yeelight home metadata and guarded management workflows. | |
| ItalyCheck yeick010/italycheck Italian public bodies by codice fiscale (IndicePA): name, PEC, address. Paid per call via x402. | |
| io.github.yellow-hammer/mcp-1c-platform-tools yellow-hammer/mcp-1c-platform-tools MCP для команд 1c-platform-tools. Нужно расширение 1c-platform-tools с включённым IPC. | |
| md-feedback yeominux/md-feedback Review markdown plans before AI agents build. Annotate, gate-check, apply fixes, session handoffs. | |
| io.github.Yercko/devilge yercko/devilge Android/KMM MCP server: logcat, ADB device control, Compose previews, network, Maestro flows. | |
| io.github.yesc97/biopharma-catalyst-mcp yesc97/biopharma-catalyst-mcp Forensic biopharma catalyst auditor — 10 tools, deterministic CLEAN/BEAR_SIGNAL verdict. | |
| AUTO.RIA Used Cars yevhen-kalyna/autoria-mcp MCP server for the AUTO.RIA (ria.com) used-car API: search, listings, AI average prices. | |
| io.github.yeyo11/google-docs-mcp yeyo11/google-docs-mcp Read-only server that explains a Google Doc's comments and reply threads to an AI assistant. | |
| BioMCP-TS yeyuan98/biomcp-ts Biomedical MCP server: genes, variants, trials, literature, patents, optional SQL/R/biowasm tools. | |
| io.github.yffo/tabellio yffo/tabellio Local-first memory for AI agents: markdown source of truth, budget-aware recall, write gate. | |
| YG3 Marketing MCP yg3-ai/yg3-mcp Marketing MCP: content, SEO, outbound, LinkedIn, ads. Agents provision a sandbox with one POST. | |
| RAWThink ygtalp/rawthink-mcp Persistent memory for AI thinking partnerships: hybrid search and a temporal knowledge graph. |
19,351–19,400 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.