Overview
What Context7 does
Context7 gives agents a focused documentation lookup path instead of asking them to rely entirely on training data. The agent first resolves a package or library to Context7's identifier, then requests documentation relevant to the current programming question. A hosted HTTP endpoint offers the shortest setup, while the npm package provides a local stdio option for clients that prefer launching their own process.
Best for
- Checking current library APIs during implementation
- Grounding setup and configuration answers in package documentation
- Reducing outdated examples in code-generation workflows
Not ideal for
- General web search or broad research
- Private documentation without a configured account and key
- Tasks where the authoritative source is project code rather than library docs
Capabilities
What an agent can do
- 01
Library identifier resolution
- 02
Topic-focused documentation retrieval
- 03
Version-sensitive code examples
- 04
Hosted and local connection modes
- 05
Optional API-key authentication for higher limits and private sources
Representative tools and operations
resolve-library-idquery-docs
Installation
Connect Context7
Use the publisher’s current instructions as the source of truth. The examples below were checked on .
Generic HTTP clientConnect to the hosted server
https://mcp.context7.com/mcp{"type":"streamable-http","url":"https://mcp.context7.com/mcp","headers":{"CONTEXT7_API_KEY":"${CONTEXT7_API_KEY}"}}Claude CodeLaunch the npm package locally
claude mcp add context7 -- npx -y @upstash/context7-mcp@latestAdd --api-key only when authenticated access is needed.Trust and access
Authentication and security notes
Authentication: The public service can be used without a key for basic access. A Context7 API key can be sent in the hosted request headers or passed to the local package for higher limits and private-repository features.
Review before connecting
- Treat a Context7 API key as a secret and avoid embedding it in shared configuration.
- Review retrieved examples against the version and constraints of your own application.
- For private repositories, confirm which content the account is permitted to index and return.
Known limitations
- The open repository does not include Context7's private crawling, parsing, or API backend.
- Coverage and freshness depend on whether a library has been indexed successfully.
- It supplies documentation context; it does not verify that generated code compiles or passes tests.
Evidence
Sources used for this guide
Facts were checked against primary publisher material. Descriptions and guidance are original Graphify summaries.
FAQ
Questions about Context7
Is a Context7 API key mandatory?
No for basic public use. A key is useful for higher service limits and features tied to an account, including private sources.
Why does Context7 use two tools?
Resolving the library first disambiguates similarly named packages; the documentation query can then target the selected library and topic.
