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 SP Araçariguama: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_sp_aracariguama_nfs-mcp Prefeitura SP Araçariguama: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Plat | |
| Prefeitura SP Campinas: Certidão Negativa de Débitos mcp-dir/pref_sp_campinas_cnd-mcp Prefeitura SP Campinas: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SP Campinas: CPOM mcp-dir/pref_sp_campinas_cpom-mcp Prefeitura SP Campinas: CPOM, official-source lookup. Platform-hosted, pay per query with prepaid cr | |
| Prefeitura SP Campinas: Parcelas IPTU mcp-dir/pref_sp_campinas_iptu-mcp Prefeitura SP Campinas: Parcelas IPTU, official-source lookup. Platform-hosted, pay per query with p | |
| Prefeitura SP Guarulhos: Certidão Negativa de Débitos mcp-dir/pref_sp_guarulhos_cnd-mcp Prefeitura SP Guarulhos: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SP Guarulhos: Certidão Negativa de Débitos Mobiliários mcp-dir/pref_sp_guarulhos_cndm-mcp Prefeitura SP Guarulhos: Clearance Certificate (Debts) Mobiliários, official-source lookup. Platform | |
| Prefeitura SP Hortolândia: Certidão Negativa de Débitos mcp-dir/pref_sp_hortolandia_cnd-mcp Prefeitura SP Hortolândia: Clearance Certificate (Debts), official-source lookup. Platform-hosted, p | |
| Prefeitura SP Jundiaí: Certidão Tributária de IPTU mcp-dir/pref_sp_jundiai_cert_trib_iptu-mcp Prefeitura SP Jundiaí: Certificate Tributária de IPTU, official-source lookup. Platform-hosted, pay | |
| Prefeitura SP Mairiporã: Certidão Negativa de Débitos mcp-dir/pref_sp_mairipora_cnd-mcp Prefeitura SP Mairiporã: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SP Mogi das Cruzes: Certidão Negativa de Débitos mcp-dir/pref_sp_mogi_cruzes_cnd-mcp Prefeitura SP Mogi das Cruzes: Clearance Certificate (Debts), official-source lookup. Platform-hoste | |
| Prefeitura SP Mogi das Cruzes: CPOM mcp-dir/pref_sp_mogi_cruzes_cpom-mcp Prefeitura SP Mogi das Cruzes: CPOM, official-source lookup. Platform-hosted, pay per query with pre | |
| Prefeitura SP Osasco: Certidão de Tributos de Imóveis mcp-dir/pref_sp_osasco_cert_imov-mcp Prefeitura SP Osasco: Certificate de Tributos de Imóveis, official-source lookup. Platform-hosted, p | |
| Prefeitura SP Osasco: Certidão de Não-Inscrição mcp-dir/pref_sp_osasco_cert_nao_insc-mcp Prefeitura SP Osasco: Certificate de Não-Inscrição, official-source lookup. Platform-hosted, pay per | |
| Prefeitura SP Osasco: Certidão de Tributos de Empresa mcp-dir/pref_sp_osasco_cert_trib-mcp Prefeitura SP Osasco: Certificate de Tributos de Empresa, official-source lookup. Platform-hosted, p | |
| Prefeitura SP Osasco: Certidão Tributária de IPTU mcp-dir/pref_sp_osasco_iptu-mcp Prefeitura SP Osasco: Certificate Tributária de IPTU, official-source lookup. Platform-hosted, pay p | |
| Prefeitura SP Ribeirão Preto: Certidão Negativa de Débitos mcp-dir/pref_sp_ribeirao_preto_cnd-mcp Prefeitura SP Ribeirão Preto: Clearance Certificate (Debts), official-source lookup. Platform-hosted | |
| Prefeitura SP São Bernardo do Campo: Certidão Negativa de Débitos mcp-dir/pref_sp_sao_bernardo_cnd-mcp Prefeitura SP São Bernardo do Campo: Clearance Certificate (Debts), official-source lookup. Platform | |
| Prefeitura SP São Carlos: Certidão Negativa de Débitos mcp-dir/pref_sp_sao_carlos_cnd-mcp Prefeitura SP São Carlos: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pa | |
| Prefeitura SP São Paulo: AIT (Últimos 36 meses) mcp-dir/pref_sp_sao_paulo_ait_listagem-mcp Prefeitura SP São Paulo: AIT (Últimos 36 meses), official-source lookup. Platform-hosted, pay per qu | |
| Prefeitura SP São Paulo: AIT mcp-dir/pref_sp_sao_paulo_ait-mcp Prefeitura SP São Paulo: AIT, official-source lookup. Platform-hosted, pay per query with prepaid cr | |
| Prefeitura SP São Paulo: CADIN mcp-dir/pref_sp_sao_paulo_cadin-mcp Prefeitura SP São Paulo: CADIN, official-source lookup. Platform-hosted, pay per query with prepaid | |
| Prefeitura SP São Paulo: Caixa Postal mcp-dir/pref_sp_sao_paulo_caixa_postal-mcp Prefeitura SP São Paulo: Caixa Postal, official-source lookup. Platform-hosted, pay per query with p | |
| Prefeitura SP São Paulo: CCM mcp-dir/pref_sp_sao_paulo_ccm-mcp Prefeitura SP São Paulo: CCM, official-source lookup. Platform-hosted, pay per query with prepaid cr | |
| Prefeitura SP São Paulo: CPOM mcp-dir/pref_sp_sao_paulo_cpom-mcp Prefeitura SP São Paulo: CPOM, official-source lookup. Platform-hosted, pay per query with prepaid c | |
| Prefeitura SP São Paulo: Certidão Tributária Mobiliária mcp-dir/pref_sp_sao_paulo_ctm-mcp Prefeitura SP São Paulo: Certificate Tributária Mobiliária, official-source lookup. Platform-hosted, | |
| Prefeitura SP São Paulo: Certidão de Dados Cadastrais do Imóvel mcp-dir/pref_sp_sao_paulo_dados_imovel-mcp Prefeitura SP São Paulo: Certificate de Dados Cadastrais do Imóvel, official-source lookup. Platform | |
| Prefeitura SP São Paulo: Débitos de IPTU mcp-dir/pref_sp_sao_paulo_debitos_iptu-mcp Prefeitura SP São Paulo: Debts de IPTU, official-source lookup. Platform-hosted, pay per query with | |
| Prefeitura SP São Paulo: Dívida Ativa mcp-dir/pref_sp_sao_paulo_divida_ativa-mcp Prefeitura SP São Paulo: Dívida Ativa, official-source lookup. Platform-hosted, pay per query with p | |
| Prefeitura SP São Paulo: DSV Digital mcp-dir/pref_sp_sao_paulo_dsv_digital-mcp Prefeitura SP São Paulo: DSV Digital, official-source lookup. Platform-hosted, pay per query with pr | |
| Prefeitura SP São Paulo: Emissão Parcela Simples Nacional mcp-dir/pref_sp_sao_paulo_ep-mcp Prefeitura SP São Paulo: Issuance Parcela Simples Nacional, official-source lookup. Platform-hosted, | |
| Prefeitura SP São Paulo: Certidão Tributária de IPTU mcp-dir/pref_sp_sao_paulo_iptu-mcp Prefeitura SP São Paulo: Certificate Tributária de IPTU, official-source lookup. Platform-hosted, pa | |
| Prefeitura SP São Paulo: Segunda via Simplificada de IPTU mcp-dir/pref_sp_sao_paulo_iptu2via-mcp Prefeitura SP São Paulo: Segunda via Simplificada de IPTU, official-source lookup. Platform-hosted, | |
| Prefeitura SP São Paulo: Multas mcp-dir/pref_sp_sao_paulo_multas_guias-mcp Prefeitura SP São Paulo: Multas, official-source lookup. Platform-hosted, pay per query with prepaid | |
| Prefeitura SP São Paulo: Multas (Antiga) mcp-dir/pref_sp_sao_paulo_multas-mcp Prefeitura SP São Paulo: Multas (Antiga), official-source lookup. Platform-hosted, pay per query wit | |
| Prefeitura SP São Paulo: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_sp_sao_paulo_nfs-mcp Prefeitura SP São Paulo: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Platfor | |
| Prefeitura SP São Paulo: Regularidade OTTC mcp-dir/pref_sp_sao_paulo_ottc-mcp Prefeitura SP São Paulo: Regularidade OTTC, official-source lookup. Platform-hosted, pay per query w | |
| Prefeitura SP São Paulo: Recursos de Multas mcp-dir/pref_sp_sao_paulo_recursos-mcp Prefeitura SP São Paulo: Recursos de Multas, official-source lookup. Platform-hosted, pay per query | |
| Prefeitura SP São Paulo: 2ª Via da Taxa de Elevadores mcp-dir/pref_sp_sao_paulo_tx_elevador-mcp Prefeitura SP São Paulo: 2ª Via da Taxa de Elevadores, official-source lookup. Platform-hosted, pay | |
| Prefeitura SP São Paulo: Valor Venal de Referência mcp-dir/pref_sp_sao_paulo_valor_ref-mcp Prefeitura SP São Paulo: Valor Venal de Referência, official-source lookup. Platform-hosted, pay per | |
| Prefeitura SP Sorocaba: Certidão Negativa de Débitos mcp-dir/pref_sp_sorocaba_cnd-mcp Prefeitura SP Sorocaba: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay | |
| Prefeitura SP Sumaré: NFS-e (Nota Fiscal Eletrônica de Serviços) mcp-dir/pref_sp_sumare_nfs-mcp Prefeitura SP Sumaré: NFS-e (Nota Fiscal Eletrônica de Serviços), official-source lookup. Platform-h | |
| Prefeitura TO Palmas: Certidão Negativa de Débitos mcp-dir/pref_to_palmas_cnd-mcp Prefeitura TO Palmas: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay pe | |
| Polícia Rodoviária Federal: Débitos mcp-dir/prf_debitos-mcp Polícia Rodoviária Federal: Debts, official-source lookup. Platform-hosted, pay per query with prepa | |
| Infrações da PRF mcp-dir/prf_infracoes-mcp History of traffic fines recorded by Brazil's Federal Highway Police by RENAVAM, including canceled, | |
| Processos Judiciais (Agrupada) mcp-dir/processos_judiciais_agrupada-mcp Grouped lookup of a person's or company's lawsuits from the CPF or CNPJ, with a summary view by cour | |
| Processos Judiciais (Completa) mcp-dir/processos_judiciais_completa-mcp Full lookup of a person's or company's lawsuits from the CPF or CNPJ, with per-case detail. Platform | |
| Processos Judiciais (Simplificada) mcp-dir/processos_judiciais_simplificada-mcp Simplified lookup of a person's or company's lawsuits from the CPF or CNPJ. Platform-hosted, no cred | |
| Procfy mcp-dir/procfy-mcp Financial management on Procfy — transactions (revenue/expense/transfers), bank accounts, contacts, | |
| Projuris ADV mcp-dir/projuris-mcp Wrapper for the official Projuris ADV REST API (legal practice management): cases, people (clients/p | |
| Protestos Nacional mcp-dir/protestos_nacional-mcp Existence and details of protests for people and companies in registry offices across Brazil. Platfo |
12,401–12,450 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.