mempalace

name	mempalace
description	MemPalace — Local AI memory with 96.6% recall. Semantic search, temporal knowledge graph, palace architecture (wings/rooms/drawers). Free, no cloud, no API keys.
version	3.3.0
homepage	https://github.com/MemPalace/mempalace
user-invocable	true
metadata	{"openclaw":{"emoji":"🏛","os":["darwin","linux","win32"],"requires":{"anyBins":["mempalace","python3"]},"install":[{"id":"mempalace-pip","kind":"uv","label":"Install MemPalace (Python, local ChromaDB)","package":"mempalace","bins":["mempalace"]}]}}

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 (uv recommended):

uv tool install mempalace   # or: 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.