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Tested by Few Servers on 6 Oct 2026. We ran npx -y @upstash/context7-mcp@latest on our own machine and measured: 2 tools in its tools/list reply, 6.79 s to initialise, 341 MB resident memory after listing tools, version 4.1.1. The version in the registry today can be newer than the one we ran. Full write-up: Context7 MCP explained and tested: 2 tools, and three questions we already knew the answers to · The best MCP servers for Claude Code that need no API key: the 5 we ran

What it does

Up-to-date code docs for any prompt

Description as published by the publisher in the official MCP Registry, read 10 Oct 2026. Not written or verified by Few Servers.

Facts

Registry name	`io.github.upstash/context7`
Publisher	GitHub account upstash Namespace verified by the registry through the publisher's GitHub account.
Category	AI, memory and agents sorted by our keyword rules
Transport	remote (streamable-http), local package (npm, MCPB)
Version	4.3.0
This version published	9 Oct 2026
Vendor's own server	Yes: published under the vendor's own namespace
GitHub stars	62,912 on upstash/context7 read from GitHub on 12 Oct 2026. GitHub's count, not a rating by us.
Last seen	10 Oct 2026, in our crawl of the official MCP Registry
Tested by Few Servers	Yes, on 6 Oct 2026 (details)

Remote endpoint (streamable-http), as published: https://mcp.context7.com/mcp
npm package, as published: @upstash/context7-mcp · version 4.3.0 · transport stdio
```
npx -y @upstash/context7-mcp
```
Standard run command for npm packages. The registry publishes the package name, not a command; check the repository for required arguments.
MCPB package, as published: https://github.com/upstash/context7/releases/download/mcpb-v4.3.0/context7.mcpb · version 4.3.0 · transport stdio

Install details read from the registry record on 12 Oct 2026.

The registry record declares a secret value (a key or token) that is not marked required. Declared by the publisher:

Authorization (header, secret, not marked required): API key for authentication. Accepts "Bearer <key>" or the raw key.
CONTEXT7_API_KEY (environment variable, secret, not marked required): API key for authentication

Being listed is not a safety check. Read the repository and check what a server asks for before you connect it. How the directory works.

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