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Best Docs & code context MCP servers in 2026: Top 18 Picks, Ranked

Up-to-date library documentation and semantic code navigation, so the agent stops guessing APIs. Below are the 18 docs & code context MCP servers we recommend in 2026, ranked by our editor score, GitHub stars, reader upvotes and how often readers click through.

Last updated October 2026 · 18 listings reviewed

The ranking

1

Context7 Freemium

Up-to-date, version-specific library documentation for your coding agent

★ 63k · +180 this week · MIT · updated 2026-10-02

9.0/10

What it does Context7, from Upstash, gives your coding agent current, version-specific documentation and code examples for the libraries you use. The goal is to stop the agent from writing code against old APIs, or APIs that never existed, that it picked up in training. Ask for something like "Next.js 14 middleware" and Context7 finds the right library and version,… Read more →

Pros

  • Fixes outdated-API mistakes
  • Huge library coverage
  • Free tier

Cons

  • Rate limits without an API key

Pricing: Freemium  ·  docs context

2

MCP Python SDK Open source

The official Python SDK for building Model Context Protocol servers and clients

★ 24k · +55 this week · MIT · updated 2026-10-02

8.5/10

What it does This is the official Python SDK for the Model Context Protocol, maintained by the MCP project. It lets you build MCP servers that expose tools, resources and prompts to any MCP host, and MCP clients that connect to any server. The same package does both. Servers are written as plain type-hinted Python functions: the type hints become… Read more →

Pros

  • Official reference implementation for MCP in Python
  • Type hints become the schema, no boilerplate
  • Supports stdio, Streamable HTTP and SSE

Cons

  • A library to build with, not a ready-to-run server
  • v2 is a major rework; pin a version until you migrate

Pricing: Open source  ·  mcp python sdk mcp-server mcp-client

3

Serena Free

Semantic code retrieval and editing toolkit for agents, powered by language servers

★ 30k · +146 this week · GPL-3.0-or-later · updated 2026-09-30

8.2/10

What it does Serena, made by Oraios, is an open-source MCP server that gives a coding agent IDE-style code navigation and editing. Most agents read whole files and edit by searching for text. Serena instead lets the agent work with symbols: it can find a function or class, list what references it, and replace or insert code at the symbol… Read more →

Pros

  • Symbol-level navigation saves tokens
  • Many languages via LSP
  • Free

Cons

  • Setup per language

Pricing: Free  ·  code navigation lsp

4

Codebase Memory MCP Open source

Local knowledge graph of your repo so agents query call chains instead of grepping files

★ 46k · +765 this week · MIT · updated 2026-10-02

7.8/10

What it does Codebase Memory MCP turns a repository into a persistent knowledge graph that your coding agent can query, so it does not have to grep and read files one at a time. It is a single native binary written in C. It parses code with bundled tree-sitter grammars for more than 150 languages and adds type resolution for… Read more →

Pros

  • Single native binary with no API key, runtime or hosted service
  • Call-path tracing and git-diff impact mapping
  • Index stays current through a file watcher

Cons

  • Installer edits many agent config files and adds skills and hooks unless you pass --skip-config
  • Token-saving figures come from the authors' own benchmarks

Pricing: Open source  ·  code-intelligence knowledge-graph tree-sitter local code-search

5

pg-aiguide Open source

MCP server and skills giving coding agents versioned PostgreSQL and TimescaleDB expertise

★ 1.9k · +7 this week · Apache-2.0 · updated 2026-10-01

7.7/10

What it does pg-aiguide gives AI coding tools deep, version-aware PostgreSQL knowledge so they write better database code. AI assistants often produce Postgres that is outdated, missing constraints and indexes, or unaware of modern features; pg-aiguide counters that by offering semantic search across the official PostgreSQL manual, curated best-practice "skills" that agents apply automatically, and extension ecosystem docs starting with… Read more →

Pros

  • Version-aware doc search plus opinionated best-practice skills
  • Public hosted server works with any MCP client; skills usable standalone

Cons

  • Doc queries go to the hosted mcp.tigerdata.com endpoint
  • Scope is Postgres and its ecosystem only

Pricing: Open source  ·  postgres timescaledb documentation semantic-search database

6

MCP Memory Service Open source

Self-hosted persistent memory for coding agents with semantic search and a knowledge graph

★ 2.0k · +15 this week · Apache-2.0 · updated 2026-10-02

7.6/10

What it does MCP Memory Service gives coding agents a long-term memory that lasts between sessions. The agent can save a decision, a code pattern or an architecture note in one conversation and find it again later with semantic search. That saves you re-explaining the project every time. Memories are stored with tags and embeddings, which are computed locally with… Read more →

Pros

  • Local-first with on-device ONNX embeddings
  • MCP, REST API and dashboard share one store across agents
  • Very active releases

Cons

  • Large surface area; several serious auth advisories fixed recently
  • Default embedding model is English-only

Pricing: Open source  ·  memory semantic-search knowledge-graph rest-api self-hosted

7

Grounded Docs MCP Server Open source

Self-hosted, version-specific documentation index for coding agents, an open Context7 alternative

★ 1.8k · +21 this week · MIT · updated 2026-09-28

7.6/10

What it does Grounded Docs, published as Docs MCP Server, builds a private index of the library documentation your project depends on so your coding agent can look up current, version-specific answers instead of guessing. You point it at documentation websites, GitHub repositories, npm or PyPI packages, local folders or zip archives. It crawls them, splits the content into chunks… Read more →

Pros

  • Indexes websites, GitHub repos, npm/PyPI packages and local files on your own machine
  • Queries target a specific library version
  • Web UI, CLI and Agent Skills alongside the MCP server

Cons

  • Best search quality needs an embedding provider, which may cost money or need a local model
  • Anonymous telemetry is on by default

Pricing: Open source  ·  documentation rag context version-specific self-hosted

8

Context Mode Free

Sandboxed execution and local search index that keep bulky tool output out of context

★ 25k · +908 this week · Elastic-2.0 · updated 2026-10-02

7.4/10

What it does Context Mode is an MCP server, packaged with hooks, that keeps bulky tool output out of your coding agent's context window. The agent does not read large files, logs or API responses directly. It runs code in a sandboxed subprocess and only the printed result comes back. Longer output is indexed into a local SQLite full-text store,… Read more →

Pros

  • Only stdout or matching search hits reach the model
  • Session events survive context compaction
  • Setup guides for a wide range of agents

Cons

  • Elastic License 2.0 is source-available, not open source
  • Execute tools run arbitrary code, and hooks change how the agent routes tool calls

Pricing: Free  ·  context-window sandbox full-text-search hooks session-memory

9

Markdownify MCP Open source

Convert PDFs, Office files, audio, images, web pages and YouTube to Markdown for agents

★ 3.0k · MIT · updated 2026-09-25

7.0/10

What it does Markdownify MCP turns files and web content into Markdown that a coding agent can read. It wraps Microsoft's markitdown library, which the install script puts into a local Python virtual environment. The server passes a PDF, Office document, image, audio file, web page or YouTube link through it and returns clean text. This is handy when a… Read more →

Pros

  • Handles many input formats through Microsoft's markitdown
  • Optional MD_ALLOWED_PATHS read boundary
  • No API keys needed

Cons

  • Manual clone-and-build setup needing Bun, Node and Python
  • Docker image lacks OCR and audio transcription

Pricing: Open source  ·  markdown document-conversion pdf markitdown transcription

10

shadcn/ui MCP Server Open source

Gives agents shadcn/ui component source, demos and blocks for React, Svelte, Vue and RN

★ 3.0k · +11 this week · MIT · updated 2026-05-16

6.8/10

What it does shadcn-ui-mcp-server, by Janardhan Polle, gives an AI agent direct access to shadcn/ui component source, demos, blocks and metadata. Instead of guessing how a component is built or which dependencies it needs, the agent fetches the current code from the upstream repositories. It supports four implementations: shadcn/ui for React, shadcn-svelte, shadcn-vue and react-native-reusables, and for React it can… Read more →

Pros

  • Covers React, Svelte, Vue and React Native ports
  • Fetches real upstream source instead of model memory
  • stdio, SSE and Docker options

Cons

  • Needs a GitHub token to avoid low rate limits
  • Overlaps with shadcn's own agent tooling

Pricing: Open source  ·  shadcn-ui react components frontend mcp-server

11

Mcp For Blender Free

Community plugin to control Blender 3D with any LLM of your choice

★ 30k · +521 this week · MIT · updated 2026-09-30

6.5/10

What it does MCP for Blender is a community-built Model Context Protocol server that gives AI assistants direct control over Blender, the 3D modeling and animation software. It enables prompt-driven 3D scene creation — an agent can create and edit objects, apply materials, inspect scene data and generate ready-to-use 3D assets, turning natural-language requests into actual Blender operations rather than… Read more →

Pros

  • 29,000+ GitHub stars, MIT licensed and very actively maintained
  • Deep Blender control: objects, materials and scene export, plus asset generation via Poly Haven/Sketchfab/Hyper3D
  • Documented with many clients: Claude Desktop, Claude Code, Cursor, VS Code, Codex, OpenCode and Antigravity

Cons

  • Requires Blender 3.0+, Python 3.10+ and the uv package manager to install
  • Can execute arbitrary Python inside Blender, so agent-generated scripts should be reviewed before running on production files

Pricing: Free  ·  blender 3d-modeling blender-addon mcp-server claude-code

12

Ha Mcp Free

The Unofficial and Awesome Home Assistant MCP Server

★ 4.9k · +81 this week · MIT · updated 2026-10-02

6.5/10

What it does ha-mcp is an unofficial Model Context Protocol server for Home Assistant. It lets AI assistants query and control a Home Assistant smart-home instance in natural language — checking device states, calling services, and managing the automations, scripts and dashboards that make up a home automation setup. What is inside / Tools it gives your agent The server… Read more →

Pros

  • 92+ tools spanning search, control, automation management, monitoring and system administration
  • Runs against your own local Home Assistant instance, no third-party cloud dependency required
  • Documented to work with 15+ AI clients, including Claude Desktop, Claude.ai, ChatGPT, Cursor and Copilot

Cons

  • Setup requires installing a custom HACS component plus configuring Home Assistant integration
  • Unofficial community project, not maintained by the Home Assistant core team

Pricing: Free  ·  home-assistant smart-home home-automation hacs mcp-server

13

Tradingview Mcp Free

MCP server exposing market data, technical analysis and backtesting tools to any MCP client

★ 4.9k · +257 this week · MIT · updated 2026-09-01

6.5/10

What it does TradingView MCP is an MCP server that gives an AI assistant real-time and historical market data — stocks, crypto, forex and futures across global exchanges — plus technical-analysis and backtesting tools, without needing a TradingView account. Tools it gives your agent 37 tools in total, including: - 9 backtestable trading strategies with Sharpe ratio, win rate and… Read more →

Pros

  • 37 tools covering data, technical analysis and backtesting in one server
  • Free self-hosted option alongside a paid hosted tier
  • Works across multiple global exchanges and asset classes

Cons

  • Not a coding tool — entirely focused on trading/market analysis, only tangentially related to this directory's AI-coding-agent focus
  • Hosted tier is a separate paid product from a third-party site, not the open-source server itself

Pricing: Free  ·  mcp trading market-data backtesting finance

14

Unity MCP Free

MCP server, CLI and plugin that let AI agents drive the Unity Editor and runtime directly

★ 4.4k · +36 this week · Apache-2.0 · updated 2026-09-28

6.5/10

What it does Unity MCP is an MCP server, companion CLI and Unity plugin that let AI coding agents drive the Unity Editor and runtime directly: creating GameObjects, editing scenes and materials, running tests, capturing screenshots, and calling arbitrary C methods you expose with a single AiTool attribute, instead of only reading and writing script files on disk. Tools it… Read more →

Pros

  • 70+ tools covering assets, scenes, scripting and profiling, plus one-line C# method exposure via [AiTool]
  • Runtime support for in-game AI (NPCs, live debugging), not just editor-time edits
  • Actively maintained, Apache-2.0 licensed, free, and works with any MCP client or LLM provider

Cons

  • Unity-specific; no value outside Unity projects
  • Requires a CLI install per project plus a Unity-side plugin/package kept in sync with updates

Pricing: Free  ·  unity game-dev mcp-server csharp claude-code

15

Google Meta Ads Ga4 Mcp Free

Remote MCP server exposing Google Ads, Meta Ads and GA4 as ~250 tools for AI assistants

★ 3.3k · +952 this week · MIT · updated 2026-09-25

6.5/10

What it does This MCP server, run by Ryze AI, gives an AI assistant direct access to Google Ads, Meta Ads (Facebook/Instagram), Google Analytics 4 and Google Search Console through a single hosted endpoint — no local install or API keys required, since authentication happens through OAuth login. Tools it gives your agent Approximately 250 tools across three areas: -… Read more →

Pros

  • Single hosted endpoint covering Google Ads, Meta Ads and GA4 with no local setup
  • OAuth login instead of managing separate API keys per platform
  • Broad client support across coding and non-coding assistants

Cons

  • Off-topic for a coding-agent directory — it's an ad-management tool, not a development tool
  • Hosted-only architecture means ad-account data passes through a third party's servers

Pricing: Free  ·  mcp google-ads meta-ads ga4 marketing

16

Jadx Ai Mcp Free

Plugin for JADX to integrate MCP server

★ 2.8k · +21 this week · Apache-2.0 · updated 2026-09-23

6.5/10

What it does JADX-AI-MCP is a plugin for the JADX Android decompiler that connects it to the Model Context Protocol, giving AI assistants live, structured access to a decompiled APK. Instead of pasting decompiled Java or Smali into a chat window, an agent can query classes, methods, resources and cross-references directly inside JADX-GUI — useful for Android reverse engineering, vulnerability… Read more →

Pros

  • 20+ specialized reverse-engineering tools, including decompile, xref and debugger integration
  • One-line install straight from the JADX plugin manager
  • Apache-2.0 licensed and built on the widely-used JADX decompiler

Cons

  • Requires a separately installed JADX plus a Python 3.10+ MCP server component running alongside it
  • Niche use case: mainly valuable for Android APK reverse engineering and security work

Pricing: Free  ·  reverse-engineering android apk-analysis jadx security

17

Gemini Mcp Tool Free

Bring Gemini's huge context window into Claude for large-codebase analysis

★ 2.3k · +3 this week · updated 2026-07-21

6.5/10

What it does Gemini MCP Tool is an MCP server that lets Claude (and other MCP clients) hand off large-context work to Google's Gemini backend. When a codebase or file set is too big for the calling model's own context window, Claude can delegate the analysis to Gemini through this server and get a synthesized answer back, instead of truncating… Read more →

Pros

  • Offloads large-file/codebase analysis outside Claude's own context window
  • One-line install via the Claude CLI
  • Actively maintained, MIT licensed

Cons

  • Depends on the now-retired Gemini CLI; defaults to the newer Antigravity backend
  • Only tested against Claude clients despite being a generic MCP server

Pricing: Free  ·  mcp gemini claude-code codebase-analysis context-window

18

Drawio Mcp Server Free

Draw.io Model Context Protocol (MCP) Server

★ 1.5k · +2 this week · MIT · updated 2026-09-15

6.5/10

What it does Draw.io MCP Server is a Model Context Protocol server that lets AI coding agents create, inspect, and edit diagrams directly inside draw.io (diagrams.net). Instead of describing a diagram in words, an agent can call the server to add shapes, wire up connectors, organize pages and layers, and read back the current state of a diagram — useful… Read more →

Pros

  • Free and open source (MIT)
  • Broad diagram coverage: shapes, layers, pages, and auto-discovered AWS/GCP/Azure/Cisco stencils
  • Documented to work with Claude Desktop, Claude Code, Zed, Codex and OpenCode

Cons

  • Requires Node.js v22+ and a running draw.io instance (browser extension or built-in editor)
  • Desktop-app integration is still experimental due to CSP restrictions

Pricing: Free  ·  diagramming architecture-diagrams mcp-server claude-code draw-io

Docs & code context MCP servers compared at a glance

#NamePricingStarsScore
1Context7Freemium★ 63k9.0
2MCP Python SDKOpen source★ 24k8.5
3SerenaFree★ 30k8.2
4Codebase Memory MCPOpen source★ 46k7.8
5pg-aiguideOpen source★ 1.9k7.7
6MCP Memory ServiceOpen source★ 2.0k7.6
7Grounded Docs MCP ServerOpen source★ 1.8k7.6
8Context ModeFree★ 25k7.4
9Markdownify MCPOpen source★ 3.0k7.0
10shadcn/ui MCP ServerOpen source★ 3.0k6.8
11Mcp For BlenderFree★ 30k6.5
12Ha McpFree★ 4.9k6.5
13Tradingview McpFree★ 4.9k6.5
14Unity MCPFree★ 4.4k6.5
15Google Meta Ads Ga4 McpFree★ 3.3k6.5
16Jadx Ai McpFree★ 2.8k6.5
17Gemini Mcp ToolFree★ 2.3k6.5
18Drawio Mcp ServerFree★ 1.5k6.5

How we rank docs & code context MCP servers

Every listing gets an editor score from 0 to 10 based on usefulness, quality of the instructions or code, maintenance (recent commits, open issues) and adoption (GitHub stars), and we check which apps it really works with. Reader upvotes and click-throughs nudge the order over time, and we remove listings that shut down, go unmaintained or change pricing dramatically. Read our full methodology.

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