About Memorycrystal
Memorycrystal is an MCP server published by memorycrystal in the RAG category: persistent memory for AI agents — OpenClaw plugin + MCP server.
The repository has 12 stars and 2 forks, with the last commit 19 hours ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
git clone https://github.com/memorycrystal/memorycrystalThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (26)
crystal_checkpointSnapshot memory state at a milestone
Parameters not published.
crystal_dependency_chainTrace dependency chains between entities
Parameters not published.
crystal_editUpdate an existing memory
Parameters not published.
crystal_empty_knowledge_baseDelete all chunks but keep the KB row/id/bindings
Parameters not published.
crystal_explain_connectionExplain relationships between concepts
Parameters not published.
crystal_forgetArchive or delete a memory
Parameters not published.
crystal_idea_actionAct on Organic ideas
Parameters not published.
crystal_ideasList active Organic ideas and discoveries
Parameters not published.
crystal_import_knowledgeImport reference chunks into a KB (upsert-by-`dedupeKey` replaces in place)
Parameters not published.
crystal_list_knowledge_base_memoriesEnumerate a KB's chunks with cursor pagination + ids
Parameters not published.
Show all 26 tools
crystal_list_knowledge_basesList available knowledge bases
Parameters not published.
crystal_preflightPre-flight check before risky actions
Parameters not published.
crystal_query_knowledge_baseSearch a knowledge base
Parameters not published.
crystal_recallSemantic search across all long-term memory
Parameters not published.
crystal_recentRecent messages for short-term context
Parameters not published.
crystal_rememberStore a memory — decisions, facts, lessons
Parameters not published.
crystal_search_messagesHybrid search over verbatim conversation history, with time-window (`fromMs`/`toMs` or ISO dates) and pagination
Parameters not published.
crystal_set_scopeOverride channel scope for the session
Parameters not published.
crystal_statsMemory and usage statistics
Parameters not published.
crystal_traceTrace a memory back to its source conversation
Parameters not published.
crystal_wakeSession startup — briefing and guardrails
Parameters not published.
crystal_what_do_i_knowEverything known about a topic
Parameters not published.
crystal_who_ownsFind ownership of a file, module, or area
Parameters not published.
crystal_why_did_weDecision archaeology — why a past choice was made
Parameters not published.
memory_getRead a full memory by ID or path
Parameters not published.
memory_searchSearch LTM and return crystal paths
Parameters not published.
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