Context7 serves up-to-date documentation and code examples for thousands of libraries. She asks it when she writes code with a library.
It works without a key; a free key from context7.com raises its limits. Its code comes from npm (@upstash/context7-mcp, version 4.4.4); we tested that version.
What it can access or do
Runs a program on this computer: npx -y @upstash/context7-mcp@4.4.4
Reaches: context7.com
Asks you for: Context7 key (optional) (kept in the vault)
Before you add it
Requirements
Node.js
Supported systems
Windows · macOS · Linux
Recorded test environment
Windows / Sara 2.57.0
Supported systems and recorded tests are different: the environment above is the one documented in this listing. External services and hardware may have their own costs.
Listing preview · open full sizeVersion notes and catalog checks
Review date: 2026-11-02
Started on Windows 11 with Sara 2.57.0: initialize and tools/list answered with 2 tools.
First listing.
Passed: limits
Passed: manifest
Passed: id
Passed: secrets
Passed: permissions — Reaches: context7.com
Passed: scan
Passed: shots
Passed: listing
Checks are evidence recorded by the catalog, not a guarantee that an add-on is risk-free.
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