crystal_search_messages

MCP tool from Memorycrystal by memorycrystal

Hybrid search over verbatim conversation history, with time-window (fromMs/toMs or ISO dates) and pagination

How to use it

Project documentation lists crystal_search_messages for the Memorycrystal MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

FULL MEMORYCRYSTAL LISTING

Other tools in Memorycrystal (25)

crystal_checkpoint

Snapshot memory state at a milestone

crystal_dependency_chain

Trace dependency chains between entities

crystal_edit

Update an existing memory

crystal_empty_knowledge_base

Delete all chunks but keep the KB row/id/bindings

crystal_explain_connection

Explain relationships between concepts

crystal_forget

Archive or delete a memory

crystal_idea_action

Act on Organic ideas

crystal_ideas

List active Organic ideas and discoveries

crystal_import_knowledge

Import reference chunks into a KB (upsert-by-dedupeKey replaces in place)

crystal_list_knowledge_base_memories

Enumerate a KB's chunks with cursor pagination + ids

crystal_list_knowledge_bases

List available knowledge bases

crystal_preflight

Pre-flight check before risky actions

crystal_query_knowledge_base

Search a knowledge base

crystal_recall

Semantic search across all long-term memory

crystal_recent

Recent messages for short-term context

crystal_remember

Store a memory — decisions, facts, lessons

crystal_set_scope

Override channel scope for the session

crystal_stats

Memory and usage statistics

crystal_trace

Trace a memory back to its source conversation

crystal_wake

Session startup — briefing and guardrails

crystal_what_do_i_know

Everything known about a topic

crystal_who_owns

Find ownership of a file, module, or area

crystal_why_did_we

Decision archaeology — why a past choice was made

memory_get

Read a full memory by ID or path

memory_search

Search LTM and return crystal paths