CPersona
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- AlicenseNot gradedqualityAmaintenancePersistent AI memory server with 3-layer hybrid search (vector + FTS5 + keyword), confidence scoring via Reciprocal Rank Fusion, episodic/profile memory, and 16 tools. Zero LLM dependency. Works standalone with Claude Desktop and Claude Code. MIT licensed.3Business Source 1.1
- AlicenseNot gradedqualityDmaintenancePersistent memory MCP server for Claude Code. Store, search, and retrieve memories across sessions using hybrid vector + keyword search powered by SQLite, FTS5, and sqlite-vec.8 npm1MIT
- FlicenseNot gradedqualityDmaintenanceA lightweight MCP memory server built on SQLite + FTS5, providing cross-session long-term memory for Claude Code.-

Loreofficial
AlicenseBqualityBmaintenanceCross-agent memory server: hybrid (vector + full-text + knowledge-graph) recall, per-user private/shared visibility, write-side secret/PII redaction, and as-of-date bi-temporal fact queries. Auto-injection hooks for Claude Code / Cursor / Codex; self-hostable on PostgreSQL or SQLite.469MIT- AlicenseAqualityCmaintenanceLocal-first memory for Claude Code and any MCP client: hybrid vector + keyword search and a bi-temporal knowledge graph in one SQLite file. Local embeddings, no API key, $0/token.5172 npm2PolyForm Noncommercial 1.0.0
- AlicenseNot gradedqualityBmaintenanceCross-client AI memory hub for AI agents. Lets Claude Code, Cursor, Windsurf, and 20+ other clients share one physical SQLite memory database. Features bi-temporal time axes, source attribution, Q-Value usage-based ranking, and FTS5 full-text search with SQLite triggers.711 PyPI3Apache 2.0
TDQS
Scored across 34 tools
Most tools target distinct resources or actions, but several families have subtle boundaries: recall, recall_with_context, and reconstruct all retrieve memories, while check_health, deep_check, and get_session_findings all report diagnostics. The detailed descriptions explicitly steer between them, but an agent must read carefully to choose correctly.
All tool names use snake_case and most follow a verb_noun pattern such as get_profile, update_memory, delete_episode, and check_health. A few are bare verbs (store, recall, reconstruct, traverse) or noun-like (persistence_status), so the convention is readable but not perfectly uniform.
At 34 tools, the surface is well above the typical well-scoped range, mixing core memory operations with many niche admin, diagnostic, and maintenance tools such as check_update, get_queue_status, migrate_channel_axis, and pause/resume persistence. The breadth may reflect a mature backend, but it is heavy for an MCP server and increases selection cost.
The core memory lifecycle is well covered: store, update, delete, lock/unlock, list, recall/reconstruct, profiles, episodes, declared associations, import/export/merge, and health diagnostics. Minor gaps remain, such as no dedicated get/update for a single episode and no queue-management operations, but agents can work around them.