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Context7 in Claude Code: setup, keeping the API key out of your repo, and fixing 401s

This story is from 2026-10-27. It is preserved in the archive; the latest stories are on the live feed.

Context7 gives Claude Code current, version-specific library docs through two tools, resolve-library-id and query-docs . The hosted server at https://mcp.context7.com/mcp needs no local Node.js; an API key is optional, but Upstash recommends a free one for higher rate limits. Your library names and…

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  1. 2026-10-27 14:34 · DEV Community — AI
    Context7 in Claude Code: setup, keeping the API key out of your repo, and fixing 401s

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