MCP servers, called rather than listed

Every remote server in the official MCP registry, sent one real initialize handshake. 16,923 servers across 11,823 hosts.

Search what these servers can do · read the measurement

Last checked 2026-09-06. We send a handshake, we do not authenticate and we do not call a tool.

Gated is not broken. 4,068 of these servers answer with a 401 or 403. They are running and want a credential we do not have. A checker that treats them as dead is wrong about 24.0% of the registry before it starts, so we count them separately and always will.

16,923 matching.

serverresulttoolshost
mcp-ai
https://api.mcp.ai/p_contas_light_download
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_light_download_cep
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_light_download_cep_ocr
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_light_download_ocr
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_neoenergia_download
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_neoenergia_download_ocr
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_sabesp_download_conta
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_contas_sabesp_lista_instal
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_coren_pr_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_coren_sp_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_correios_cep
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_correios_completa_cep
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_correios_rastreamento
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_correios_restricoes_entrega
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cpf_cadastral
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cpf_cadastral_plus
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cpf_receita
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cplug
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_crcp_certificado
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_dossie
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_negativo
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_pf
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_pf_completo
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_pj_limite
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_pj_risco
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_credito_score
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_crf_go_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_crf_sp_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_crisp
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ac_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_al_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_am_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ap_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ba_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ce_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_df_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_es_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_go_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ma_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_mg_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_ms_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_mt_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_pa_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_pb_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_pe_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_pi_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_pr_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_rj_cadastro
answers a handshake 7 api.mcp.ai
mcp-ai
https://api.mcp.ai/p_cro_rn_cadastro
answers a handshake 7 api.mcp.ai
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