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 |
|---|---|
| Prefeitura MG Juatuba: Certidão Negativa de Débitos mcp-dir/pref_mg_juatuba_cnd-mcp Prefeitura MG Juatuba: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay p | |
| Prefeitura MG Luz: Certidão Negativa de Débitos mcp-dir/pref_mg_luz_cnd-mcp Prefeitura MG Luz: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per q | |
| Prefeitura MG Montes Claros: Certidão Negativa de Débitos mcp-dir/pref_mg_montes_claros_cnd-mcp Prefeitura MG Montes Claros: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura MG Nova Serrana: Certidão Negativa de Débitos mcp-dir/pref_mg_nova_serrana_cnd-mcp Prefeitura MG Nova Serrana: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura MG Pará de Minas: Certidão Negativa de Débitos mcp-dir/pref_mg_para_minas_cnd-mcp Prefeitura MG Pará de Minas: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura MG Santa Vitória: Certidão Negativa de Débitos mcp-dir/pref_mg_santa_vitoria_cnd-mcp Prefeitura MG Santa Vitória: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura MG Uberaba: Certidão Negativa de Débitos mcp-dir/pref_mg_uberaba_cnd-mcp Prefeitura MG Uberaba: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay p | |
| Prefeitura MG Uberlândia: Certidão Negativa de Débitos mcp-dir/pref_mg_uberlandia_cnd-mcp Prefeitura MG Uberlândia: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pa | |
| Prefeitura MS: Calculadora de Fretes mcp-dir/pref_ms_calculadora_frete-mcp Prefeitura MS: Calculadora de Fretes, official-source lookup. Platform-hosted, pay per query with pr | |
| Prefeitura MS Campo Grande: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_ms_campo_grande_nfs-mcp Prefeitura MS Campo Grande: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Plat | |
| Prefeitura MS Chapadão do Sul: Certidão Negativa de Débitos mcp-dir/pref_ms_chapadao_do_sul_cnd-mcp Prefeitura MS Chapadão do Sul: Clearance Certificate (Debts), official-source lookup. Platform-hoste | |
| Prefeitura MS Mundo Novo: Certidão Negativa de Débitos mcp-dir/pref_ms_mundo_novo_cnd-mcp Prefeitura MS Mundo Novo: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pa | |
| Prefeitura MS Naviraí: Certidão Negativa de Débitos mcp-dir/pref_ms_navirai_cnd-mcp Prefeitura MS Naviraí: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay p | |
| Prefeitura MT Cuiabá: Certidão Negativa de Débitos mcp-dir/pref_mt_cuiaba_cnd-mcp Prefeitura MT Cuiabá: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Prefeitura MT Cuiabá: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_mt_cuiaba_nfs-mcp Prefeitura MT Cuiabá: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Platform-h | |
| Prefeitura MT Rondonópolis: Certidão Negativa de Débitos mcp-dir/pref_mt_rondonopolis_cnd-mcp Prefeitura MT Rondonópolis: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura PA Belém: Multas mcp-dir/pref_pa_belem_multas-mcp Prefeitura PA Belém: Multas, official-source lookup. Platform-hosted, pay per query with prepaid cre | |
| Prefeitura PB Campina Grande: Multas mcp-dir/pref_pb_campina_grande_multas-mcp Prefeitura PB Campina Grande: Multas, official-source lookup. Platform-hosted, pay per query with pr | |
| Prefeitura PB João Pessoa: Multas mcp-dir/pref_pb_joao_pessoa_multas-mcp Prefeitura PB João Pessoa: Multas, official-source lookup. Platform-hosted, pay per query with prepa | |
| Prefeitura PB Mataraca: Certidão Negativa de Débitos mcp-dir/pref_pb_mataraca_cnd-mcp Prefeitura PB Mataraca: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura PE Petrolina: Multas mcp-dir/pref_pe_petrolina_multas-mcp Prefeitura PE Petrolina: Multas, official-source lookup. Platform-hosted, pay per query with prepaid | |
| Prefeitura PE Recife: Certidão Negativa de Débitos mcp-dir/pref_pe_recife_cnd-mcp Prefeitura PE Recife: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Prefeitura PE Recife: CPOM mcp-dir/pref_pe_recife_cpom-mcp Prefeitura PE Recife: CPOM, official-source lookup. Platform-hosted, pay per query with prepaid cred | |
| Prefeitura PE Recife: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_pe_recife_nfs-mcp Prefeitura PE Recife: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Platform-h | |
| Prefeitura PR Curitiba: Certidão Negativa de Débitos mcp-dir/pref_pr_curitiba_cnd-mcp Prefeitura PR Curitiba: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura PR Francisco Beltrão: Certidão Negativa de Débitos mcp-dir/pref_pr_francisco_beltrao_cnd-mcp Prefeitura PR Francisco Beltrão: Clearance Certificate (Debts), official-source lookup. Platform-hos | |
| Prefeitura PR Maringá: Certidão Negativa de Débitos (Contribuinte) mcp-dir/pref_pr_maringa_cnd-mcp Prefeitura PR Maringá: Clearance Certificate (Debts) (Contribuinte), official-source lookup. Platfor | |
| Prefeitura RJ Duque de Caxias: Certidão Negativa de Débitos mcp-dir/pref_rj_duque_de_caxias_cnd-mcp Prefeitura RJ Duque de Caxias: Clearance Certificate (Debts), official-source lookup. Platform-hoste | |
| Prefeitura RJ Rio de Janeiro: Certidão de Elementos Cadastrais - IPTU mcp-dir/pref_rj_rio_janeiro_cert_cad-mcp Prefeitura RJ Rio de Janeiro: Certificate de Elementos Cadastrais - IPTU, official-source lookup. Pl | |
| Prefeitura RJ Rio de Janeiro: Certidão Tributária de IPTU mcp-dir/pref_rj_rio_janeiro_cert_trib-mcp Prefeitura RJ Rio de Janeiro: Certificate Tributária de IPTU, official-source lookup. Platform-hoste | |
| Prefeitura RJ Rio de Janeiro: Certidão Negativa de Débitos mcp-dir/pref_rj_rio_janeiro_cnd-mcp Prefeitura RJ Rio de Janeiro: Clearance Certificate (Debts), official-source lookup. Platform-hosted | |
| Prefeitura RJ Rio de Janeiro: Emissão de IPTU mcp-dir/pref_rj_rio_janeiro_iptu-mcp Prefeitura RJ Rio de Janeiro: Issuance de IPTU, official-source lookup. Platform-hosted, pay per que | |
| Prefeitura RJ Rio de Janeiro: Multas (Descritivos) mcp-dir/pref_rj_rio_janeiro_multas-mcp Prefeitura RJ Rio de Janeiro: Multas (Descritivos), official-source lookup. Platform-hosted, pay per | |
| Prefeitura RJ Rio de Janeiro: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_rj_rio_janeiro_nfs-mcp Prefeitura RJ Rio de Janeiro: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Pl | |
| Prefeitura RN Natal: Certidão Negativa de Débitos mcp-dir/pref_rn_natal_cnd-mcp Prefeitura RN Natal: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per | |
| Prefeitura RN Touros: Certidão Negativa de Débitos mcp-dir/pref_rn_touros_cnd-mcp Prefeitura RN Touros: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Prefeitura RS Canela: Certidão Negativa de Débitos mcp-dir/pref_rs_canela_cnd-mcp Prefeitura RS Canela: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Prefeitura RS Caxias do Sul: Certidão Negativa de Débitos mcp-dir/pref_rs_caxias_do_sul_cnd-mcp Prefeitura RS Caxias do Sul: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura RS Farroupilha: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_rs_farroupilha_nfs-mcp Prefeitura RS Farroupilha: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Platf | |
| Prefeitura RS Montenegro: Certidão Negativa de Débitos mcp-dir/pref_rs_montenegro_cnd-mcp Prefeitura RS Montenegro: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pa | |
| Prefeitura RS Porto Alegre: Certidão Negativa de Débitos mcp-dir/pref_rs_porto_alegre_cnd-mcp Prefeitura RS Porto Alegre: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura RS Porto Alegre: Comprovante de Inscrição do ISSQN mcp-dir/pref_rs_porto_alegre_issqn-mcp Prefeitura RS Porto Alegre: Comprovante de Inscrição do ISSQN, official-source lookup. Platform-host | |
| Prefeitura RS Santa Cruz do Sul: Certidão Negativa de Débitos mcp-dir/pref_rs_santa_cruz_do_sul_cnd-mcp Prefeitura RS Santa Cruz do Sul: Clearance Certificate (Debts), official-source lookup. Platform-hos | |
| Prefeitura RS Três Coroas: Certidão Negativa de Débitos mcp-dir/pref_rs_tres_coroas_cnd-mcp Prefeitura RS Três Coroas: Clearance Certificate (Debts), official-source lookup. Platform-hosted, p | |
| Prefeitura SC Balneário Camboriú: Certidão Negativa de Débitos mcp-dir/pref_sc_balneario_cnd-mcp Prefeitura SC Balneário Camboriú: Clearance Certificate (Debts), official-source lookup. Platform-ho | |
| Prefeitura SC Blumenau: Certidão Negativa de Débitos mcp-dir/pref_sc_blumenau_cnd-mcp Prefeitura SC Blumenau: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SC Florianópolis: Certidão Negativa de Débitos mcp-dir/pref_sc_florianopolis_cnd-mcp Prefeitura SC Florianópolis: Clearance Certificate (Debts), official-source lookup. Platform-hosted, | |
| Prefeitura SC Itajaí: Certidão Negativa de Débitos mcp-dir/pref_sc_itajai_cnd-mcp Prefeitura SC Itajaí: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Prefeitura SC Joinville: Certidão Negativa de Débitos mcp-dir/pref_sc_joinville_cnd-mcp Prefeitura SC Joinville: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SE Laranjeiras: Certidão Negativa de Débitos mcp-dir/pref_se_laranjeiras_cnd-mcp Prefeitura SE Laranjeiras: Clearance Certificate (Debts), official-source lookup. Platform-hosted, p |
12,351–12,400 of 115,409
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.