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MemPalace

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mempalace
The best-benchmarked open-source AI memory system. And it's free.

Python · 59159 stars

Beginner friendly Everything

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Can we add bulk drawer tools? And should they be part of the singular tools or separate? Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

MemPalace/mempalace#2558 · Opened Sep 18, 2026
The stdio MCP servers exit on a line json.loads rejects with ValueError or RecursionError Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

MemPalace/mempalace#2556 · Opened Sep 18, 2026
mempalace-mcp leaves requests unanswered when it cannot serve them Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

MemPalace/mempalace#2554 · Opened Sep 18, 2026
Mark derived knowledge-graph facts before a synthesis layer lands Open

area/kg enhancement

Difficulty 4/5 3-5 days Newbie friendliness 52/100

MemPalace/mempalace#2553 · Opened Sep 18, 2026
Record who asserted, ended or superseded each knowledge-graph fact Open

area/kg area/mcp enhancement

Difficulty 4/5 3-5 days Newbie friendliness 70/100

MemPalace/mempalace#2552 · Opened Sep 18, 2026
Show who filed a memory in search results and the wake-up digest Open

area/hooks area/search enhancement

Difficulty 4/5 3-5 days Newbie friendliness 56/100

MemPalace/mempalace#2551 · Opened Sep 18, 2026
`status`/taxonomy and `list_drawers` disagree on drawer counts (physical rows vs logical drawers) Open

bug

Difficulty 5/5 Over a week Newbie friendliness 45/100

MemPalace/mempalace#2544 · Opened Sep 18, 2026
mcp_server._get_client has no own-write re-stamp: every add_drawer and check_duplicate reloads the HNSW index (#2307 covered only ChromaBackend) Open

Difficulty 3/5 1-2 days Newbie friendliness 75/100

MemPalace/mempalace#2535 · Opened Sep 16, 2026
Trust model for multi-agent shared palaces: 3 lessons from actually running one Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MemPalace/mempalace#2532 · 1 comment · Opened Sep 16, 2026
Wheels for all supported Python versions Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MemPalace/mempalace#2529 · 1 reaction · Opened Sep 16, 2026
mempalace-native: read-only open fails on a WAL database without sidecars Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2521 · Opened Sep 15, 2026
mempalace-native: default --db path ignores the XDG config directory Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2520 · Opened Sep 15, 2026
`repair-status` reports `unknown` for healthy palaces with fewer records than `sync_threshold` Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

MemPalace/mempalace#2514 · 2 comments · Opened Sep 15, 2026
quarantine_stale_hnsw destroys flushed vectors when the WAL has been purged (sibling path to #1710) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MemPalace/mempalace#2510 · Opened Sep 15, 2026
Foreground daemon emits no lifecycle logging (empty launchd StandardOutPath) Open

area/cli bug P3

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

MemPalace/mempalace#2475 · Opened Sep 9, 2026
Parser upgrades skip unchanged Codex rollouts previously indexed as raw JSON Open

area/mining bug P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2470 · Opened Sep 9, 2026
Conversation re-mine assigns the newest transcript timestamp to earlier exchanges Open

area/mining bug P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2468 · Opened Sep 9, 2026
Allow an operator to append to the protocol text returned by mempalace_status Open

area/mcp enhancement P3

Difficulty 3/5 1-2 days Newbie friendliness 72/100

MemPalace/mempalace#2451 · Opened Sep 6, 2026
Compatibility note: v3.0.0 to v3.9.0 with a legacy JovoCoder search wrapper Open

documentation P3

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MemPalace/mempalace#2449 · Opened Sep 6, 2026
repair: rebuild a single collection from SQLite when only mempalace_closets is wedged Open

enhancement P2 storage

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MemPalace/mempalace#2443 · Opened Sep 4, 2026
bug(windows): harden migration temporary allocation and prevent partial wing-name updates Open

bug

Difficulty 5/5 Over a week Newbie friendliness 38/100

MemPalace/mempalace#2438 · Opened Sep 3, 2026
bug(windows): bound hallway sidecar temporary-file allocation Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

MemPalace/mempalace#2437 · Opened Sep 3, 2026
quarantine_stale_hnsw / quarantine_invalid_hnsw_metadata leave max_seq_id behind, so the rebuild they force is permanently incomplete (silent partial index; only filtered queries error) Open

bug P1 storage

Difficulty 3/5 1-2 days Newbie friendliness 74/100

MemPalace/mempalace#2428 · 1 comment · Opened Sep 3, 2026
dynamics.py: potentiation and decay are never called Open

area/kg bug P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2417 · 1 comment · Opened Sep 2, 2026
Invitation: two week review window before MemPalace's row goes on the leaderboard Open

community

Difficulty 5/5 Over a week Newbie friendliness 25/100

MemPalace/mempalace#2414 · 1 reaction · Opened Sep 1, 2026
HTTP transport: thread-local writer-lease credit self-conflicts under ThreadingHTTPServer — second mutating call always fails Open

area/mcp bug P1

Difficulty 4/5 3-5 days Newbie friendliness 52/100

MemPalace/mempalace#2413 · 2 comments · Opened Sep 1, 2026
L1 importance metadata never written during ingestion — wake-up ranking is effectively flat Open

area/search bug P2

Difficulty 4/5 3-5 days Newbie friendliness 68/100

MemPalace/mempalace#2409 · Opened Sep 1, 2026
Reader honours --palace verbatim but never normalises to the canonical leaf → split brain (0 vs N drawers) one level shallower Open

area/cli bug P1 storage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MemPalace/mempalace#2404 · 1 comment · Opened Aug 31, 2026
Auto-save Stop hook re-mines the whole transcript in a loop, starving the hub; interrupted mine leaves a partial index Open

area/hooks area/mining bug P1 performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2403 · 1 comment · Opened Aug 31, 2026
mempalace_update_drawer silently ignores a case-only wing rename and returns success Open

area/mcp bug P2

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2395 · Opened Aug 30, 2026
Replica writer lease across stdio MCP sessions — prefer oldest-live lease, no hard reject Open

area/mcp enhancement P2

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MemPalace/mempalace#2394 · Opened Aug 30, 2026
MemPalace analyzed by Claude and compared with other memory systems Open

community

Difficulty 5/5 Over a week Newbie friendliness 10/100

MemPalace/mempalace#2390 · Opened Aug 29, 2026
Four months on, the #29 remediations have not shipped, plus six benchmark findings that audit did not cover Open

enhancement P2

Difficulty 5/5 Over a week Newbie friendliness 25/100

MemPalace/mempalace#2387 · 1 reaction · Opened Aug 29, 2026
Search returns unrelated drawers for results matched via a closet Open

area/search bug P2

Difficulty 4/5 3-5 days Newbie friendliness 54/100

MemPalace/mempalace#2377 · 2 comments · Opened Aug 28, 2026
Stop/SessionEnd/PreCompact hooks have no remote/Team-Server support (local-import only) Open

area/hooks enhancement P2

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MemPalace/mempalace#2370 · Opened Aug 27, 2026
Want to add your plugin to awesome-ai-plugins? Open

community

Difficulty 1/5 Under an hour Newbie friendliness 88/100

MemPalace/mempalace#2350 · Opened Aug 24, 2026
Native drawer revision history (versioned chain, rollback-safe reads) Open

enhancement P2 storage

Difficulty 5/5 Over a week Newbie friendliness 42/100

MemPalace/mempalace#2346 · 1 comment · Opened Aug 23, 2026
Document and commit to a stable public API surface across releases Open

documentation P3

Difficulty 5/5 Over a week Newbie friendliness 45/100

MemPalace/mempalace#2345 · 1 comment · Opened Aug 23, 2026
Extension point for PII and detection gates around ingest Open

area/mining enhancement P2 security

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2344 · 1 comment · Opened Aug 23, 2026
Built-in content-hash deduplication on write Open

area/mining enhancement P2 storage

Difficulty 5/5 Over a week Newbie friendliness 38/100

MemPalace/mempalace#2343 · 1 comment · Opened Aug 23, 2026
lock: let a fail-fast contender leave a demand mark, so hooks and CLI mines become visible to a holder Open

area/hooks area/mcp enhancement P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2340 · 1 comment · Opened Aug 23, 2026
convo miner re-mines whole transcripts: measured 95.1% of each re-mine re-embeds byte-identical content Open

area/mining bug P1 performance

Difficulty 4/5 3-5 days Newbie friendliness 68/100

MemPalace/mempalace#2336 · Opened Aug 22, 2026
quarantine_stale_hnsw false-positive loop on chromadb >= 1.5 (Rust backend never writes index_metadata.pickle) Open

area/mcp bug P1 storage

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

MemPalace/mempalace#2333 · Opened Aug 22, 2026
No supported way to disable hallway construction when the graph grows pathologically Open

area/kg enhancement P2

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2329 · 1 comment · Opened Aug 22, 2026
Hallway co-occurrence threshold (min_count) is not configurable, unlike topic_tunnel_min_count Open

area/kg enhancement P3

Difficulty 3/5 1-2 days Newbie friendliness 72/100

MemPalace/mempalace#2328 · 1 comment · Opened Aug 22, 2026
list_hallways is unbounded: a large wing returns tens of thousands of records and overflows the client tool budget Open

area/kg area/mcp bug P2 performance

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2327 · Opened Aug 22, 2026
Shell hooks bypass the `hooks` write-routing policy: Stop/PreCompact mine directly, so `require` does not fail closed — and a running daemon makes it worse Open

area/hooks bug P1

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MemPalace/mempalace#2326 · Opened Aug 22, 2026
_wing_from_transcript_path fallback never matches Windows-encoded project folders (D--...) Open

area/hooks area/mining area/windows bug P2

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

MemPalace/mempalace#2304 · 2 comments · Opened Aug 19, 2026
"N memories woven" reports the compressed message count, not memories stored Open

area/hooks bug P3

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

MemPalace/mempalace#2303 · Opened Aug 19, 2026
A freshly spawned `mempalace.mcp_server` truncates `chroma.sqlite3-shm` while the daemon holds a live connection → recurring FTS5/B-tree corruption and daemon SIGBUS Open

area/mcp bug P1 storage

Difficulty 5/5 Over a week Newbie friendliness 35/100

MemPalace/mempalace#2302 · 1 comment · 1 reaction · Opened Aug 19, 2026

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