anaksor-ocr
Sokheng · Kit
Reads Khmer and English text from documents, receipts and photos of signs, using a detector for text lines and a recogniser for each line. Suits developers who…
New
Overview
Upstash’s hosted MCP server that hands your coding assistant current docs and code examples for the library and version you ask about.
Context7 is an MCP server for AI apps in the Developer category, listed by Mindket. It is free. This is version 1, last updated on . Add it to Claude Code with the line on this page, or put its JSON in Claude Desktop, Cursor or another app. Nothing runs until you add it.
At a glance
- Runs in
- Set up for you: Cursor, Claude Code and opencode, through its setup command
- More than 30 other MCP clients: manual steps in Upstash’s docs
- A terminal: the ctx7 commands of the skills mode
- Start with
npx ctx7 setup
Platform
Cursor
Claude Code
OpenCode
About
What it is
Context7 is Upstash’s service that pulls current, version-specific documentation and code examples into your coding agent’s context. Left to its training data, a model can suggest calls that were renamed or never existed. With Context7 it answers from the docs for the version you name.
It works in two modes:
| Mode | What setup adds | How your agent uses it |
|---|---|---|
| CLI and skills | A skill | It runs ctx7 commands, with no MCP at all |
| MCP, this listing | A server registered with your agent | It calls Context7’s tools on Upstash’s hosted server |
- You add use context7 to a coding question
- resolve-library-id finds the library’s Context7 ID
- query-docs pulls docs and examples for your question
- The agent answers from those excerpts
Who it suits
Developers who code with an AI agent against libraries that change often, such as web frameworks and SDKs. Teams picking up an unfamiliar library get the most from it, and so does anyone tired of fixing calls a model made up.
| Industry | Who uses it | How they use it | Example |
|---|---|---|---|
| Web development | Front-end and full-stack developers on fast-moving frameworks such as Next.js | Ask for code that matches the framework version they run | A developer upgrading a framework asks how the new routing works and gets code for the version named. |
| Backend and SaaS | Developers wiring in an SDK such as Supabase’s | Set up an SDK they have not used before from its current docs | A developer asks for basic authentication with Supabase and names its library ID, so the matching step is skipped. |
| Agencies and freelancers | Developers who change stacks from one client to the next | Pull each client’s docs instead of trusting what the model remembers | A freelancer moving from a Next.js job to a Supabase one names the library and version in each question. |
| Software teams | Leads and reviewers who check code an agent wrote | Add a rule so agents use Context7 unasked, then trace a suggested call to its source | A reviewer asks which docs excerpt a new call came from and checks it before merging. |
Work mostly in a stable standard library and you will notice less.
Where to use it
It pays off when you write code against a library that moves fast, or set up an SDK you have not used before.
- Set up for you: Cursor, Claude Code and opencode, through its setup command
- More than 30 other MCP clients: manual steps in Upstash’s docs
- A terminal: the ctx7 commands of the skills mode
How to set it up
Setup takes one npx line.
| Need | Detail |
|---|---|
| Node.js | 22.13 or newer, for the setup command |
| A Context7 API key | Free from your Context7 dashboard. Upstash recommends one for higher rate limits. |
| A coding agent | Cursor, Claude Code, opencode or another MCP client |
- Run the setup line below. It signs you in, makes an API key and asks whether you want the skills mode or MCP.
- Add --cursor, --claude or --opencode to it to set up one agent only.
- For any other client, give it the server address on this page with the header Authorization: Bearer and your key.
npx ctx7 setup
To take the setup out again:
npx ctx7 remove
How to use it
Add use context7 to a coding question, and put the version in the question when it matters. If you know the library’s Context7 ID, name it and the matching step is skipped.
How do I set up a Next.js 16 proxy? use context7
Implement basic authentication with Supabase. use library /supabase/supabase for API and docs.
| Tool | What it takes | What it returns |
|---|---|---|
| resolve-library-id | Your question and a library name | Matching Context7 IDs |
| query-docs | An ID such as /vercel/next.js and your question, plus an optional language | Docs and code examples, with examples in that language ranked first |
Setup also installs a skill that calls Context7 for library questions. Without it, a rule in CLAUDE.md or in Cursor’s rules does the same. The README’s example rule:
Always use Context7 when I need library/API documentation, code generation, setup or configuration steps without me having to explicitly ask.
Example
One of the README’s own prompts, about caching on Cloudflare.
Configure a Cloudflare Worker script to cache JSON API responses for five minutes. use context7
The agent calls resolve-library-id with the library’s name and your question, picks a match, then calls query-docs with that ID. Its answer is built on the doc excerpts that came back. They stay in the chat, so you can ask which part a line of code came from.
For newcomers and experts
If you are new. AI models learn from data with a cutoff date, so they may not know a library’s latest version. Context7 fetches the current docs and hands them to your agent before it answers. Add use context7 to your next coding question. Then compare the answer with one asked without it.
For experts. Naming the ID skips the first call, one round trip fewer per question. The skills mode does the same from a terminal:
ctx7 library <name> <query> ctx7 docs <libraryId> <query>
Good to know
- What is open: this repository holds only the MCP server. The API backend, parsing engine and crawler are private.
- Who keeps the docs: libraries in Context7 are contributed by the community and kept by their owners. Upstash says it cannot guarantee their accuracy or security.
- Fetched code: treat it like any code from the web, and use the Report button on a project page that looks wrong
- Your question: it leaves your machine to rank results, so keep private code out of it
- Quality: answers are only as good as the index behind them
- License: MIT
Add it to your AI app
A server on the web: your app connects to its address. Put your own value where a line says <Authorization>.
Run this once in a terminal:
claude mcp add --transport http context7 https://mcp.context7.com/mcp --header "Authorization: <Authorization>"
In Claude Desktop, open Settings → Connectors → Add custom connector, and paste this address:
https://mcp.context7.com/mcp
Add this to .cursor/mcp.json in your project, or to ~/.cursor/mcp.json for every project:
{
"mcpServers": {
"context7": {
"url": "https://mcp.context7.com/mcp",
"headers": {
"Authorization": "<Authorization>"
}
}
}
}Add this to .vscode/mcp.json in your project; Copilot in agent mode then has its tools:
{
"servers": {
"context7": {
"type": "http",
"url": "https://mcp.context7.com/mcp",
"headers": {
"Authorization": "<Authorization>"
}
}
}
}Add this to ~/.codex/config.toml; the Codex CLI and its IDE extension both read it:
[mcp_servers.context7]
url = "https://mcp.context7.com/mcp"
http_headers = { "Authorization" = "<Authorization>" }In Windsurf, open the Cascade panel’s … menu → Open MCP config file, and add this to ~/.codeium/windsurf/mcp_config.json:
{
"mcpServers": {
"context7": {
"serverUrl": "https://mcp.context7.com/mcp",
"headers": {
"Authorization": "<Authorization>"
}
}
}
}NeedsAuthorization
Toolsresolve-library-idquery-docs
What’s new
Compare with similar
Listed MCP servers in the same category that share the most GitHub topics with this one.
| Product | Stars | Activity | License | Last change |
|---|---|---|---|---|
| Context7 This page | 64,331 | Active | MIT | |
| REA: Reverse Engineer AnythingShares mcp | 457,771 | Active | MIT | |
| Playwright MCPShares mcp | 39,312 | Active | Apache-2.0 |
Reviews
What people say
Posts and comments that name this project on Hacker News, Bluesky, X, Reddit, Facebook and YouTube, found by a weekly search and on Trendshift. Mindket doesn’t write or check them. Open one to read it where it was posted.
ida-silverContext7 MCP Server: Up-to-date documentation for LLMs and AI code editors3 pointsCDevbeen wiring Cursor / Claude Code with more MCP lately found upstash/context7 — current lib docs into the agent so it stops guessing stale APIs anyone using this with agents? https://github.com/upstash/context7 #AIAgents #MCP #Cursor2 likes · 1 replyfrankcAWS CEO says using AI to replace junior staff is 'Dumbest thing I've ever heard'Clarifying can help but ultimately it was trained on older versions. When you are working with a changing api, it's really important that the llm can see examples of the new api and new api docs. Adding context7 as a tool is hugely helpful here. Include in your rules or prompt to consult context7…GitHub Trending JS/TS📦 upstash / context7 ⭐ 61,607 (+47) 🗒 TypeScript Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors2 likesnextworddevHow well do coding agents use your library?context7 is open source: https://github.com/upstash/context7365tipuPlatforma Context7 -- aktuální dokumentace pro AI agenty1 likemsikora6 weeks of Claude CodeHaven't heard of docs-mcp-server, but there is the very popular Context7 with 23k Github stars and more active development: https://github.com/upstash/context7Retweeted by Theo - t3.gg [UNOFFICIAL]RT @enesakar: we have webmcp on both context7 and upstash sites. it rarely gets any requests. great idea, but clients need to support it first.1 replybdangubicAsk HN: What are your current programming pet peeves?claude mcp add context7 -- npx -y @upstash/context7-mcpSharon MachlisThe Context7 approach of re-indexing libraries and offering an MCP server that can search all of it is interesting. It doesn't surface new packages or languages, but would have up-to-date info on existing packages github.com/upstash/cont...1 likejameshiewAsk HN: How are you productively using Claude code?This is my `mcp.json` in VS Code (requires `uvx` and `npx` to be available): { "servers": { "context7": { "command": "npx", "args": [ "-y", "@upstash/context7-mcp" ], "type": "stdio" }, "fetch": { "command": "uvx", "args": [ "mcp-server-fetch" ], "type": "stdio" }, "git": { "command": "uvx",…Rob Richardsongithub.com/upstash/cont... - context7 #MCP server: get updated examples and docs in an #LLM prompt.
More from Mindket
See all from MindketQwen2.5-7B-Instruct-GGUF by Qwen
Qwen · Kit
Qwen2.5-7B-Instruct as GGUF files in eight quantization sizes, to chat with locally through llama.cpp. For people who want a capable 7.6B model on their own co…
New
ACE-Step 1.5 XL SFT
ACE-Step · Kit
Generates music from text with a 4B diffusion decoder, 50 steps and guidance control, aiming for higher audio quality than the base. For creators with a GPU of…
New
Similar projects
See all in DeveloperTrendRadar
sansan0 · Kit
An open source news and public opinion monitor. It reads Chinese hot-search lists and your RSS feeds, keeps what matches your keywords or an AI score, and push…
New63.5k
Axiocairn MCP
cplj · Kit
Checks portfolio risk for your holdings from an AI chat: concentration, volatility and beta to SPY, plus scenarios under stated assumptions. A hosted MCP serve…
New86
ECC by affaan-m
affaan-m · Skill
Affaan Mustafa’s plugin of agents, skills, commands and hooks that gives Claude Code, Codex and other coding agents a routine of planning, test-first work, fre…
New299k