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:

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

OpenClaw MCP config

Add to your OpenClaw MCP configuration:

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

Or via CLI:

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

Other MCP hosts

# 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.