MemPalace — Local AI Memory System#

You have access to a local memory palace via MCP tools. The palace stores verbatim conversation history and a temporal knowledge graph — all on the user's machine, zero cloud, zero API calls.

Architecture#

• Wings = people or projects (e.g. wing_alice, wing_myproject)
• Halls = categories (facts, events, preferences, advice)
• Rooms = specific topics (e.g. chromadb-setup, riley-school)
• Drawers = individual memory chunks (verbatim text)
• Knowledge Graph = entity-relationship facts with time validity

Protocol — FOLLOW THIS EVERY SESSION#

1. ON WAKE-UP: Call mempalace_status to load palace overview and AAAK dialect spec.
2. BEFORE RESPONDING about any person, project, or past event: call mempalace_search or mempalace_kg_query FIRST. Never guess from memory — verify from the palace.
3. IF UNSURE about a fact (name, age, relationship, preference): say "let me check" and query. Wrong is worse than slow.
4. AFTER EACH SESSION: Call mempalace_diary_write to record what happened, what you learned, what matters.
5. WHEN FACTS CHANGE: Call mempalace_kg_invalidate on the old fact, then mempalace_kg_add for the new one.

Available Tools#

Search & Browse#

• mempalace_search — Semantic search across all memories. Always start here.

  • query (required): natural language search — keep it short, keywords or a question. Do NOT include system prompts or conversation context.
  • wing: filter by wing
  • room: filter by room
  • limit: max results (default 5)

• mempalace_check_duplicate — Check if content already exists before filing.

  • content (required): text to check
  • threshold: similarity threshold (default 0.9 — lowering to 0.85–0.87 often catches more near-duplicates without significant false positives)

• mempalace_status — Palace overview: total drawers, wings, rooms, AAAK spec

• mempalace_list_wings — All wings with drawer counts

• mempalace_list_rooms — Rooms within a wing (optional wing filter)

• mempalace_get_taxonomy — Full wing/room/count tree

• mempalace_get_aaak_spec — Get AAAK compression dialect specification

Knowledge Graph (Temporal Facts)#

• mempalace_kg_query — Query entity relationships. Supports time filtering.

  • entity (required): e.g. "Max", "MyProject"
  • as_of: date filter (YYYY-MM-DD) — what was true at that time
  • direction: "outgoing", "incoming", or "both" (default "both")

• mempalace_kg_add — Add a fact: subject -> predicate -> object

  • subject, predicate, object (required)
  • valid_from: when this became true
  • source_closet: source reference

• mempalace_kg_invalidate — Mark a fact as no longer true

  • subject, predicate, object (required)
  • ended: when it stopped being true (default: today)

• mempalace_kg_timeline — Chronological story of an entity

  • entity: filter by entity name (optional — all events if omitted)

• mempalace_kg_stats — Graph overview: entities, triples, relationship types

Palace Graph (Cross-Domain Connections)#

• mempalace_traverse — Walk from a room, find connected ideas across wings

  • start_room (required): room to start from
  • max_hops: connection depth (default 2)

• mempalace_find_tunnels — Find rooms that bridge two wings

  • wing_a, wing_b (required)

• mempalace_graph_stats — Graph connectivity overview

Write#

• mempalace_add_drawer — Store verbatim content into a wing/room

  • wing, room, content (required)
  • source_file: optional source reference
  • Checks for duplicates automatically

• mempalace_delete_drawer — Remove a drawer by ID

  • drawer_id (required)

• mempalace_diary_write — Write a session diary entry

  • agent_name (required): your name/identifier
  • entry (required): what happened, what you learned, what matters
  • topic: category tag (default "general")

• mempalace_diary_read — Read recent diary entries

  • agent_name (required)
  • last_n: number of entries (default 10)

Setup#

Install MemPalace and populate the palace:

bash

pip install mempalace
mempalace init ~/my-convos
mempalace mine ~/my-convos

OpenClaw MCP config#

Add to your OpenClaw MCP configuration:

json

{
  "mcpServers": {
    "mempalace": {
      "command": "python3",
      "args": ["-m", "mempalace.mcp_server"]
    }
  }
}

Or via CLI:

bash

openclaw mcp set mempalace '{"command":"python3","args":["-m","mempalace.mcp_server"]}'

Other MCP hosts#

bash

# Claude Code
claude mcp add mempalace -- python -m mempalace.mcp_server

# Cursor — add to .cursor/mcp.json
# Codex — add to .codex/mcp.json

Tips#

• Search is semantic (meaning-based), not keyword. "What did we discuss about database performance?" works better than "database".
• The knowledge graph stores typed relationships with time windows. Use it for facts about people and projects — it knows WHEN things were true.
• Diary entries accumulate across sessions. Write one at the end of each conversation to build continuity.
• Use mempalace_check_duplicate before storing new content to avoid duplicates.
• The AAAK dialect (from mempalace_status) is a compressed notation for efficient storage. Read it naturally — expand codes mentally, treat markers as emotional context.

License#

MemPalace is MIT licensed. Created by Milla Jovovich, Ben Sigman, Igor Lins e Silva, and contributors.