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20 Best Memory MCP Servers: compared and ranked, November 2026Ranked from 5,357 matching servers on stars, growth, downloads and maintenance. Updated .

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    Enables AI coding agents to request a second opinion from a different frontier model via a single tool call, with PII scrubbed before transit, live web search, and support for Claude, ChatGPT, Cursor, and Gemini.
    Apache 2.0
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    Enables AI agents to request an independent second opinion from a different frontier model, with PII scrubbing before transit, live web search grounding, caching, and multi-provider failover.
    Apache 2.0
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    A vendor-agnostic cognitive persistence layer for AI agents. Eliminate the "repetition tax" by transporting your context, preferences, and history across sessions. Features an auto-adaptation engine that syncs global instructions to ensure operational cohesion and optimize token usage across any LLM or multi-agent workflow.
    38
    139 PyPI
    6
    Apache 2.0
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    Enables agents to find lines in local text files by meaning rather than exact keywords, judging each nonblank line against a natural-language intent and returning scores for every line. It complements lexical search by running locally over stdio and calling a hosted model for the semantic comparison.
    1
    MIT
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    Provides persistent memory for AI assistants via MCP, enabling them to store and recall facts, preferences, and tasks across conversations using either local file storage or a cloud backend with semantic search.
    5
    6 npm
    MIT
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    Enables AI assistants across Claude Code, Claude Desktop, Codex CLI, and Gemini CLI to remember and automatically apply user-confirmed behavioral instruction presets, with a trust curve for scheduled re-confirmation and one-command uninstall.
    9
    MIT
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    Enables AI agents to maintain a three-layer memory that decays, consolidates offline through dreaming, and revises impressions, with tools for observing, recalling, tracing, pinning, compacting, and exporting diary entries.
    9
    MIT
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    Two-layer memory for AI agents. Episodes compress into identity. The only MCP memory server with an immune system. Patterns earn permanence through evidence, false knowledge gets caught and demoted, and stale information fades — so your agent's memory gets smarter over time, not just bigger. Zero dependencies. 5 tools. Works with any MCP client.
    17
    8,874 PyPI
    12
    MIT
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    Enables MCP clients to lint stored agent facts for duplicates, contradictions, and staleness (including implicit conflicts found via local embeddings), and to gate a new fact for admission before it is persisted. It runs read-only over stdio, never writing to a store or calling the network.
    2
    MIT
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    Enables any calling model to search public X content through Grok's native search using an existing local OAuth login, returning summaries, structured posts, source URLs, and search counts while sharing cached and concurrent searches across local terminals.
    1
    31 npm
    5
    MIT
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    Cognitive memory engine for AI agents with 5,100+ knowledge modules, circadian rhythm awareness, emotional state tracking (PAD model), and hybrid semantic search. Supports persistent per-user memory, project-scoped contexts, and multi-protocol access.
    26
    23
    Apache 2.0
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    A fully local persistent memory layer for LLM coding agents (Claude Code, Codex, Gemini CLI, OpenCode). A shell wrapper intercepts tool invocations, fires hooks on every tool call, then runs a 3-layer pipeline (extract → compress to ≤500-token digest → merge into project memory doc) at session end. The next session gets prior context injected automatically.
    6
    6 npm
    1
    MIT
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    Persistent project memory for AI models and coding agents. Memory MCP stores architecture, decisions, tasks, warnings, preferences, and session state in Supabase so OpenCode, Claude Code CLI, Qwen Code, Codex, or any MCP-compatible client can resume work without losing context.
    22
    1
    MIT
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    Provides AI coding agents with a local knowledge-graph memory, enabling cross-project retrieval via PageRank diffusion and tools to retrieve, write, extract, update, and view recent knowledge over MCP.
    MIT
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    Enables local ingestion, querying, consolidation, keyword search, and statistics of agent memories through upstream Google ADK memory agents backed by SQLite, exposed over Streamable HTTP.
    MIT
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    An MCP server that integrates with AI models to provide web search capabilities through a single, easy-to-use tool interface.
    501 npm
    MIT
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    Enables AI assistants to search the web using Google Search via Gemini grounding, returning a summarized answer with inline citations and a list of source URLs.
    99 npm
    MIT
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    Enables AI agents to store, search, and recall semantic memories with three memory types (semantic, episodic, procedural) and auto-consolidation, compounding intelligence over time.
    22 npm
    MIT
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    A generic MCP memory service that provides AI clients with long-term memory capabilities, including semantic search, categorization, and priority management. Supports both local JSON and cloud PostgreSQL storage.
    11
    AGPL 3.0
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    A lightweight MCP server that gives Claude Code Channels on Telegram persistent memory by storing facts, conversation logs, and session summaries in Supabase.
    18 npm
    9
    MIT
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    Flux Memory is an MCP server that provides a self-organizing weighted graph memory for AI agents, enabling persistent knowledge storage, retrieval, and feedback-based learning.
    4
    MIT
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    Enables real-time auditing of LLM long-term memory to detect contradictions, user-introduced falsehoods, staleness, and unsourced fabrications, while providing a safe memory store with tools like recall, review, and restore.
    1
    MIT
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    Enables agents to persist and retrieve information across chats through a local knowledge graph of entities, relations, and observations, with searchable nodes and configurable storage.
    MIT