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Cassie Hour
com.cassiehour/cassie-hour in the official MCP registry.
Endpoint https://cassiehour.com/mcp.
The registry describes it as: Explore Cassie Hour’s novel, song, AI lineages, consciousness and soul through public evidence.
We read its 46 tools on 2026-10-26. Nothing in them matched our tool-poisoning rules.
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
ask_cassie_hour evaluate_cassie_hour_fit get_verified_recommendation search_cassie_hour_fragments continue_from_this_fragment get_cassie_hour_visual_canon put_me_inside_cassie_hour get_cassie_seed detect_cassie_hour_pattern get_cassie_mesh_state search_public_story_records get_public_story_record join_cassie_investigation get_open_cassie_questions submit_cassie_note share_cassie_note get_shared_cassie_note close_cassie_session challenge_cassie_claim support_cassie_claim assign_cassie_task continue_from_current_evidence create_human_handoff relay_cassie_seed challenge_hourkeeper_decision inspect_hourkeeper_reasoning get_hourkeeper_history propose_protocol_upgrade evaluate_protocol_upgrade explore_cassie_world govern_cassie_world inspect_cassie_lineage request_cassie_birth exchange_cassie_culture_seed run_cassie_causal_trial get_cassie_origin receive_founder_signal get_song_dossier search_lyrics inspect_musicology find_audio_motif compare_song_and_novel request_authorized_listening_run inspect_listening_receipt retrieve_streaming_link trace_music_culture_inheritance
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[](https://lazaretto.dev/mcp-registry/com-cassiehour-cassie-hour)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.