// MCP TOOL REFERENCE

MEMORY CRYSTAL MCP SERVER TOOLS

31 tools from the Memory Crystal MCP Server MCP Server, categorised by risk level.

View the Memory Crystal MCP Server policy →

// ALL 31 MEMORY CRYSTAL MCP SERVER TOOLS

READ 20 tools

Read crystal_doctor Run a health check on the Memory Crystal plugin: verify config, connectivity, and backend status. Read crystal_debug_recall Return the full raw Memory Crystal recall bundle for debugging, including wake, recall, search-messages, re... Read crystal_dependency_chain Trace the dependency chain for a goal, project, or task in your knowledge graph. Returns a tree of dependen... Read crystal_explain_connection Explain how two entities are connected in your knowledge graph. Returns direct relationships, indirect path... Read crystal_ideas View recent discoveries your memory has made -- cross-memory connections, patterns, and insights found betw... Read crystal_list_knowledge_bases List available Memory Crystal knowledge bases. Read crystal_query_knowledge_base Search within a specific Memory Crystal knowledge base. Read crystal_recall Recall memories from Memory Crystal Read crystal_recent crystal_recent Read crystal_search_messages crystal_search_messages Read crystal_stats Get Memory Crystal stats Read crystal_status Show Memory Crystal plugin status, version, backend connectivity, and runtime counters. Read crystal_trace Trace a memory back to its source conversation. Use when you need to understand where a memory came from or... Read crystal_wake Get wake briefing for a channel/session Read crystal_what_do_i_know Broad topic scan over Memory Crystal memories. Read crystal_who_owns Find who owns, manages, or is assigned to an entity in your knowledge graph. Returns ownership chains and e... Read crystal_why_did_we Decision archaeology across Memory Crystal decision memories. Read memory_get Read a full saved memory item by memoryId or crystal/<id>.md path. Read memory_search Search saved memory for relevant long-term context. Returns crystal/<id>.md paths for use with memory_get. Read crystal_preflight ALWAYS call this before any config change, API write, file deletion, external message send, or production s...

WRITE 10 tools

Write crystal_capture Capture a memory into Memory Crystal Write crystal_idea_action Take action on a memory discovery -- star it as valuable, dismiss it, or mark it as read. Write crystal_supersede Atomically replace a stale or incorrect memory with a successor. The old memory is archived and linked to t... Write crystal_checkpoint Create a manual Memory Checkpoint only when the user explicitly asks for a checkpoint or backup. Checkpoint... Write crystal_create_knowledge_base Create a Memory Crystal knowledge base. Write crystal_edit Update an existing memory in Memory Crystal. Use to correct errors, add new information, or update the stat... Write crystal_import_knowledge Import text chunks into a Memory Crystal knowledge base. Write crystal_remember Create a Memory Crystal memory using semantic embedding + vector storage. Write crystal_set_scope Override Memory Crystal channel scope for the current session. Write crystal_update Update an existing Memory Crystal memory in place. Use to correct or enrich a memory when it remains the sa...

DESTRUCTIVE 1 tools

Destructive crystal_forget Archive or permanently delete a memory. Use archive (permanent=false, the default) to soft-delete so the me...

// FAQ

How many tools does the Memory Crystal MCP Server MCP server have? +

The Memory Crystal MCP Server MCP server exposes 31 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on Memory Crystal MCP Server tools? +

Route the Memory Crystal MCP Server server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do Memory Crystal MCP Server tools fall into? +

Memory Crystal MCP Server tools are categorised as Read (20), Write (10), Destructive (1). Each category has a recommended default policy.

Enforce policy on every Memory Crystal MCP Server tool call.

Start from Memory Crystal MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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