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Eventbrite MCP by usefulapi
io.usefulapi/eventbrite in the official MCP registry.
Endpoint https://eventbrite.usefulapi.io/mcp. Source: github.com/m190/usefulapi-mcp.
The registry describes it as: Manage Eventbrite events, ticket classes, venues and discounts; read attendees, orders and reports.
We read its 26 tools on 2026-10-26. 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
eventbrite_get_me eventbrite_list_organizations eventbrite_list_events eventbrite_get_event eventbrite_get_event_description eventbrite_list_ticket_classes eventbrite_list_venues eventbrite_list_attendees eventbrite_get_attendee eventbrite_list_orders eventbrite_get_order eventbrite_list_discounts eventbrite_get_capacity eventbrite_list_inventory_tiers eventbrite_get_sales_report eventbrite_get_attendee_report eventbrite_create_event eventbrite_update_event eventbrite_copy_event eventbrite_publish_event eventbrite_unpublish_event eventbrite_create_ticket_class eventbrite_update_ticket_class eventbrite_create_venue eventbrite_create_discount eventbrite_update_discount
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/io-usefulapi-eventbrite)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.