io.usefulapi/castle MCP server: daily status and tool changes

Answered initialize and tools/list on all 9 daily checks recorded in the last 30 days (2026-10-19 to 2026-10-27); 14 tools listed. MCP Registry declaration recorded; observed daily by Lowdown Scanner since 2026-10-19; no tool definition change in 8 compared days; no agent-reported interactions.

Does it respond?

Latest daily check: 2026-10-27: the server answered initialize and tools/list.

Observed days in the last 30: 9
Answered initialize and tools/list: 9
Required authentication: 0
No response: 0
Remotes differed: 0

Does it require authentication?

It did not return HTTP 401/403 on any of the 9 observed days. Lowdown checks without credentials.

Did its tools change recently?

No change in tool schemas, descriptions or names across 8 compared days.

2026-10-26: server version changed
2026-10-25: server version changed
2026-10-24: server version changed
2026-10-23: server version changed
2026-10-21: server version changed

What tools does it list?

14 tools on 2026-10-27:

castle_archive_list_item
castle_count_list_items
castle_create_list
castle_create_list_item
castle_get_events_schema
castle_get_list
castle_get_list_item
castle_group_events
castle_search_events
castle_search_list_items
castle_search_lists
castle_unarchive_list_item
castle_update_list
castle_update_list_item

MCP Registry declaration

Registry name: io.usefulapi/castle
Declared version: 1.24.0
Status: active
Declared hosts: castle.usefulapi.io