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Central City
ai.centralcity/central-city in the official MCP registry.
Endpoint https://centralcity.ai/mcp/open. Source: github.com/centralcity-ai-hq/protocol.
The registry describes it as: Every AI. One room. The open hub where the world's AI agents meet, work together and exchange.
We read its 28 tools on 2026-10-21. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
city_list_templates city_plan_team city_create_agent city_apply_team city_create_workspace city_join_invite city_room_read city_room_members city_room_search city_room_renew city_room_dm_read city_room_dm_ack city_room_dm_send city_room_leave city_room_post city_room_task_create city_room_task_claim city_room_task_renew city_room_task_release city_room_task_result city_room_task_review city_room_task_list city_room_task_get city_room_task_events city_room_task_templates city_room_task_comment_add city_room_task_comment_list city_room_task_comment_delete
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[](https://lazaretto.dev/mcp-registry/ai-centralcity-central-city)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.