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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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  • A
    license
    Not graded
    quality
    A
    maintenance
    Turns a codebase into a persistent knowledge graph so AI coding agents can answer structural questions about functions, call chains, routes, and cross-service links through graph queries instead of reading files one by one.
    MIT
  • -
    license
    A
    quality
    Not graded
    maintenance
    Provides comprehensive development tools for FastMCP projects including documentation access, NPM package version management, and TypeScript type definitions retrieval. Enables developers to fetch FastMCP documentation, analyze NPM packages, and access MCP architecture information through natural language.
    6
    -
  • F
    license
    Not graded
    quality
    B
    maintenance
    Enables AI-assisted development of CodeQL queries for security analysis through the Model Context Protocol. Provides tools for compiling, testing, and executing CodeQL queries across multiple programming languages.
    39
    -
  • A
    license
    A
    quality
    D
    maintenance
    MCP server with local vector search for your codebase. Smart indexing, semantic search, Git history — all offline.
    7
    107 PyPI
    50
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    Long-term memory for AI coding agents, stored as a tree of plain local files. Agents search it before answering and save what lasts; changed facts are kept as history and flagged as outdated.
    9
    25 PyPI
    38
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    Enables building MCP servers in TypeScript where tool schemas, descriptions, and validation are automatically generated from class methods, their TypeScript types, and JSDoc comments at compile time.
    1
    MIT
  • F
    license
    A
    quality
    D
    maintenance
    A local semantic memory and code-indexer that uses AST parsing for structural understanding and persists architectural decisions to help AI assistants bypass context window limits.
    3
    -
  • F
    license
    A
    quality
    B
    maintenance
    A stateless MCP server that gives coding agents a curated entry point to shared memory, orchestrating Hindsight (facts) and LightRAG (corpora) for automatic routing, URL ingestion, and consistency tooling.
    6
    -
  • A
    license
    A
    quality
    Not graded
    maintenance
    Provides a memory server for coding agents over MCP, capturing and retrieving the meaning and rationale behind code decisions down to the function level. It enables agents to search product memory, get task context, and propose new memories to avoid re-deriving or re-breaking past decisions.
    9
    MIT
  • A
    license
    B
    quality
    B
    maintenance
    Enables AI coding agents to query a fully local SQLite FTS5 memory index of a codebase, returning high-density identity cards with exact line references, AST symbol contracts, phase maps, and colloquial intent search so agents can work without scanning raw files. It also supports incrementally syncing code changes and enriching knowledge under a six-pillar quality gate, keeping everything on-device with no cloud leakage.
    5
    MIT
  • F
    license
    B
    quality
    B
    maintenance
    Provides AI coding agents with a hybrid cognitive memory engine that reduces token usage, prevents amnesia, detects repetitive error loops, and retrieves relevant code context through MCP.
    6
    -
  • A
    license
    C
    quality
    D
    maintenance
    A Model Context Protocol server that helps programmers understand code by providing explanations, tech stack analysis, and best practice suggestions through prompt templates.
    3
    21 npm
    1
    ISC
  • A
    license
    C
    quality
    D
    maintenance
    AI development assistant with 36 specialized tools for memory management, code analysis, project planning, and problem-solving through natural language interactions in Korean and English.
    36
    3
    MIT
  • A
    license
    C
    quality
    D
    maintenance
    An MCP server that enables persistent memory, structured thinking sessions, and project-based knowledge management for Claude. It includes specialized coding tools for package discovery and reinvention prevention by validating code against existing libraries and APIs.
    17
    3
    MIT
  • A
    license
    Not graded
    quality
    D
    maintenance
    MCP server for local codebase memory: semantic indexing, hybrid search, and clean code analysis (static + LLM) with retrievable project notes, designed to run fully local on modest hardware.
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Provides AI agents with causal code memory by indexing repositories into a graph of symbols and edges, enabling context-aware retrieval of relevant code slices.
    60 PyPI
    3
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    A persistent memory MCP server for Claude Code that enables long-term recall across sessions via hybrid search, code intelligence, and tools for reading/writing memory.
    20 npm
    5
    MIT
  • A
    license
    Not graded
    quality
    D
    maintenance
    Provides persistent memory and semantic code understanding for AI assistants using MongoDB Atlas Vector Search. Enables intelligent code search, memory management, and pattern detection across codebases with complete semantic context preservation.
    168 npm
    13
    MIT
  • F
    license
    Not graded
    quality
    B
    maintenance
    Enables coding agents to perform read-only source investigation via a local SQLite index, offering status, search, backlog, context, impact, and drift tools for TypeScript, JavaScript, and Java codebases.
    -
  • F
    license
    Not graded
    quality
    D
    maintenance
    Provides AI agents with professional coding standards, development best practices, and context-aware guidance through static documentation and AI-powered custom recommendations. Enables agents to access comprehensive development guidelines including coding rules, debugging techniques, and AI steering instructions.
    -
  • A
    license
    A
    quality
    D
    maintenance
    Integrates Google's Gemini AI models into Claude Code and other MCP clients to provide second opinions, code comparisons, and token counting. It supports streaming responses and multi-turn conversations directly within your existing AI development workflow.
    3
    Apache 2.0
  • A
    license
    A
    quality
    B
    maintenance
    Provides a read-only interface to audit and continue coding agent sessions by extracting plans, intents, and edit authorship from history across multiple agents (Claude, Codex, OpenCode, Antigravity, Pi) via MCP, CLI, and Python SDK.
    18
    25 PyPI
    3
    MIT
  • A
    license
    B
    quality
    B
    maintenance
    High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 159 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.
    17
    48,570
    MIT
  • A
    license
    D
    quality
    D
    maintenance
    Spec-driven development tool for AI coding assistants that generates specs, validates code compliance, and provides actionable feedback.
    11
    29
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Exposes read-only tools for OPC UA PLC tag monitoring and diagnostics, and enables template-driven, validated IEC 61131-3 SCL code generation with a mandatory human review gate before download.
    1
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Serves semantic fact memory and a code knowledge graph from a single process, enabling agents to store facts pinned to the symbols they describe and to recall answers together with the relevant code. It also supports project-scoped facts, TTL-based staleness checks, reverse lookup of facts for a symbol, and impact/trace analysis across linked symbols.
    Apache 2.0