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The Context7 MCP Server gives AI agents within Caylex real-time access to accurate, up-to-date documentation for thousands of libraries and frameworks, eliminating the problem of outdated or hallucinated API references. Powered by Upstash’s Context7 platform, it allows agents to resolve library identifiers and fetch targeted documentation snippets on demand, enabling them to answer coding questions and generate correct code with confidence. When users add this server to their Caylex project, their agents can look up any supported library by name and pull back relevant, version-aware documentation at query time. This makes it especially valuable for coding assistants, code review agents, or any workflow that requires grounded, authoritative technical references across a broad ecosystem of open-source tools.
Prerequisites:
  • A Context7 account is required — sign up at context7.com/dashboard to obtain an API key.
  • An active API key from the Context7 dashboard must be available before adding this server to a Caylex project.
Important API details:
  • An API key from context7.com/dashboard is required for authentication; requests without a valid key will be rejected.
  • The —api-key CLI flag takes precedence over the CONTEXT7_API_KEY environment variable when both are provided, so ensure the correct key is configured in your Caylex project settings.
  • The server supports both stdio and HTTP transport modes; when used remotely (as in Caylex), the HTTP transport is the relevant mode.

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Server Details

PropertyValue
TransportStreamable HTTP
Server TypeExternal
Endpointhttps://mcp.context7.com/mcp
CategoriesAPI Tools & Services, Development & DevOps

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Authentication

This server supports the following authentication method:

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Header Authentication

This server authenticates via HTTP headers. During the server onboarding flow, you will be prompted to confirm the required headers. Note that you do not provide the values for the headers during the server on-boarding. Header values are provided by the users during the Auth Link flow.

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Getting Started

1

Add the server

Navigate to the Server Library and click on the New Server button. Find Context7 in the Caylex Catalog.
2

Server Onboarding flow

Go through the server onboarding flow.
3

Use in a project

Add the server to a project by configuring project connections. Its tools are now available to any agents connected to that project.
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Firecrawl

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Tavily

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References

https://context7.com/docs/installation

https://context7.com/docs/resources/developer

https://github.com/upstash/context7