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 |
|---|---|
| Password Policy Auditor Audit password policies and authentication configurations for security compliance. Check password complexity, storage (hashing algorithms), rotation policies... | |
| Patreon Launch Coach Coach creators through launching, growing, and sustaining a Patreon (or Memberful, Buy Me a Coffee, Ko-fi, OnlyFans business model) — tier design, pricing, l... | |
| Performance Budget Enforcer Define, measure, and enforce web performance budgets — bundle sizes, asset counts, image weights, third-party scripts. Fails CI when budgets are exceeded. Tr... | |
| Podcast Monetization Coach End-to-end podcast monetization & growth coach. Use when a podcaster asks for sponsorship strategy (host-read, programmatic, dynamic-insertion), CPM pricing,... | |
| Post Deployment Verifier Verify deployments are healthy after release — check endpoints, compare response schemas, validate metrics, run smoke tests, verify database migrations, and... | |
| Postcss Config Validator Validate PostCSS config files (.postcssrc, postcss.config.js, package.json#postcss) for plugin ordering, deprecated plugins, Tailwind integration, and best p... | |
| Postgres Query Optimizer Analyze slow PostgreSQL queries, interpret EXPLAIN ANALYZE output, identify performance bottlenecks, and recommend indexes, query rewrites, and configuration... | |
| Pr Description Generator Auto-generate pull request descriptions from git diffs and commit history. Parses conventional commits, categorizes changes (features, fixes, refactoring), a... | |
| Pr Review Assistant Automated pull request review providing detailed feedback on correctness, security, performance, maintainability, testing, and best practices. | |
| Pre Commit Config Validator Validate .pre-commit-config.yaml files for structure, repository entries, hook definitions, local hooks, and best practices. 23 rules across 5 categories. | |
| Prettierrc Validator Validate and lint Prettier configuration files (.prettierrc, .prettierrc.json, .prettierrc.yaml, .prettierrc.toml, package.json#prettier) for structure, inva... | |
| Prisma Schema Analyzer Analyze Prisma schemas for performance, relation design, index strategy, migration safety, and query optimization — audit schema.prisma for production readin... | |
| Prometheus Alert Designer Design Prometheus alerting rules and recording rules — analyze PromQL queries, set meaningful thresholds, reduce alert fatigue, and build multi-window multi-... | |
| Prompt Debugger Debug prompts that produce unexpected AI outputs — diagnose failure modes, identify ambiguity and conflicting instructions, test variations, compare model re... | |
| Prompt Evolution Engine Iteratively improve AI prompts by analyzing, rewriting, comparing, and refining them using structured patterns for clarity, structure, and format compliance. | |
| Prompt Injection Tester Test LLM applications for prompt injection vulnerabilities — run attack simulations, evaluate defenses, and generate hardening recommendations for AI systems. | |
| Protobuf Linter Lint Protocol Buffer (.proto) files for style, naming conventions, breaking changes, and best practices. Supports proto2 and proto3 syntax with 24 rules acro... | |
| Pyproject Toml Validator Validate Python project pyproject.toml files against PEP 517/621 rules for project metadata, build system, and tool configurations with detailed reports. | |
| Python Typing Checker Analyze Python type annotation coverage and quality — check mypy compliance, find untyped functions, review Protocol usage, Generic types, TypeVar constraint... | |
| Rag Chunking Optimizer Optimize RAG pipeline chunking strategy — analyze documents, recommend chunk sizes, splitting methods, overlap settings, and metadata enrichment for maximum... | |
| React Component Auditor Audit React components for performance, accessibility, hook correctness, prop design, and re-render optimization — identify memo opportunities and state mana... | |
| Real Estate Listing Coach Coach real-estate agents and FSBO sellers through listing optimization — pricing strategy, MLS description writing, photo direction, staging priorities, mark... | |
| Redis Cluster Analyzer Analyze Redis Sentinel and Cluster configurations for high availability, performance, and memory efficiency. Checks sentinel topology, cluster slot distribut... | |
| Release Notes Humanizer Turn a raw git log, PR title list, or changelog dump into customer-facing release notes that read like a human wrote them. Detects categories (new feature /... | |
| Release Readiness Checker Pre-release checklist for shipping software — verify tests pass, changelog updated, version bumped, no debug code, dependencies clean, docs current, no secre... | |
| Repository Health Score Score a repository's health across 8 dimensions — code quality, testing, documentation, CI/CD, security, dependencies, community, and maintainability. Produc... | |
| Requirements Checker Validate, lint, and sort Python requirements.txt files for best practices and CI. | |
| Rollup Config Validator Validate Rollup config files (rollup.config.js/mjs/ts) for output format conflicts, plugin ordering issues, deprecated options, and best practices. Use when... | |
| Runbook Automator Convert manual incident runbooks into automated, executable playbooks. Parse existing runbooks, generate scripts for each step, add health checks, rollback p... | |
| Rust Unsafe Auditor Audit Rust code for unsafe block usage — verify safety invariants, check FFI boundaries, review raw pointer operations, validate Send/Sync implementations, a... | |
| Saas Indie Hacker Coach End-to-end SaaS / micro-SaaS indie hacker coach (bootstrapped solo founder, build-in-public, $1K-$50K MRR brackets). Use when an indie hacker asks for idea v... | |
| Saas Pricing Auditor Audit a SaaS pricing page and return a scorecard, specific rewrites, and an A/B test priority queue. Diagnoses tier psychology (3-tier vs 4-tier, where the a... | |
| Sbom Generator Generate Software Bill of Materials (SBOM) in CycloneDX or SPDX format — inventory all dependencies, licenses, vulnerabilities, and supply chain metadata. Re... | |
| Secrets Audit Scan projects and codebases for exposed secrets, API keys, tokens, passwords, and sensitive credentials. Detects hardcoded secrets in source code, config fil... | |
| Semver Manager Parse, validate, compare, sort, bump, and filter semantic versions (semver). Use when asked to check version compatibility, bump version numbers, sort releas... | |
| Sentry Error Analyzer Analyze Sentry error patterns, prioritize issues by user impact, identify root causes, and suggest targeted fixes. Use when asked to triage errors, analyze c... | |
| Sentry Error Triage Sentry error tracking — list, triage, and resolve issues; manage releases and source maps via CLI and REST API. | |
| Service Catalog Auto-discover and catalog all services in a codebase or organization — scan Dockerfiles, docker-compose, Kubernetes manifests, package.json, systemd units, P... | |
| Service Dependency Mapper Auto-discover and map service dependencies from code, configs, and runtime data. Generate dependency graphs, identify critical paths, find single points of f... | |
| Shadow Traffic Tester Set up and analyze shadow traffic testing to compare new service versions against production without user impact | |
| Side Hustle Portfolio Coach Coach for someone running multiple side hustles in parallel (newsletter + digital product + freelance + affiliate + creator monetization + small SaaS) and tr... | |
| Sidekiq Job Analyzer Analyze Sidekiq job configurations for reliability, performance, queue design, retry policies, and memory safety — optimize Ruby background processing. | |
| Site Health Monitor Monitor websites for uptime, SSL certificate expiry, response time, HTTP errors, and content changes. Generate health reports and send alerts when issues are... | |
| Slack Messaging Slack messaging — send messages, manage channels, upload files, add reactions, and automate team notifications via CLI and API. | |
| Slo Calculator Calculate SLO/SLA error budgets, allowed downtime, burn rates, and uptime metrics. Use when asked about SLO targets, error budgets, uptime calculations, nine... | |
| Spring Boot Actuator Analyzer Analyze Spring Boot Actuator endpoints for security, health checks, metrics exposure, and production configuration — audit info, health, and custom endpoints. | |
| SQL Migration Linter Lint .sql migration files for common mistakes — missing IF EXISTS guards, UPDATE/DELETE without WHERE, non-idempotent CREATE, missing transaction wrappers, r... | |
| Stylelint Config Validator Validate Stylelint config files for errors, deprecated rules, config structure, plugins, extends, and overrides, outputting text or JSON results. | |
| Substack Newsletter Coach Coach newsletter writers on niche, voice, structure, growth, monetization, pricing, and migration to build and scale Substack and similar platforms effectively. | |
| Supabase Security Auditor Audit Supabase projects for security — check Row Level Security policies, auth configuration, API exposure, storage rules, and edge function security. |
19,301–19,350 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.