> ## Documentation Index
> Fetch the complete documentation index at: https://context7-codex-consolidate-context7-doc-suggestions.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Technical Reference

> Package names, runtime requirements, and migration notes for the Context7 SDK, CLI, and MCP server

Use this reference to choose a package and check the changes that affect an upgrade.

## Packages

| Package        | npm package and latest version                                                 | Node.js                                                |
| -------------- | ------------------------------------------------------------------------------ | ------------------------------------------------------ |
| CLI            | [`ctx7`](https://www.npmjs.com/package/ctx7)                                   | 22 LTS (22.13 or later) or 24 LTS                      |
| MCP server     | [`@upstash/context7-mcp`](https://www.npmjs.com/package/@upstash/context7-mcp) | 20.18.1 or later                                       |
| TypeScript SDK | [`@upstash/context7-sdk`](https://www.npmjs.com/package/@upstash/context7-sdk) | Use a maintained Node.js release with built-in `fetch` |

The CLI package metadata still lists Node.js 18, but current dependencies need a
newer runtime. See [CLI installation](/clients/cli#installation).
For release history and upgrade details, see [Release Notes](/resources/release-notes).

Related packages: [`@upstash/context7-tools-ai-sdk`](https://www.npmjs.com/package/@upstash/context7-tools-ai-sdk) (Vercel AI SDK tools) and [`@upstash/context7-pi`](https://www.npmjs.com/package/@upstash/context7-pi) (pi.dev extension).

For how queries are stored and used (reranking providers, retention, and enterprise opt-out), see [Data Privacy](/security/data-privacy).

## Versioning & Migration

Breaking changes and deprecations to be aware of when upgrading.

### SDK — v0.2.0 API simplification

The SDK API was simplified in `0.2.0`:

* `getDocs()` was replaced by `getContext(query, libraryId, options)`, which takes a `query` for relevance-based retrieval
* `searchLibrary(query, libraryName)` now takes both a query and a library name
* Response types were renamed (`Library` and `Documentation` instead of `SearchResult`, `CodeDocsResponse`, etc.)
* Pagination, mode, topic, and limit options were removed from context retrieval

### CLI — research mode removed (v0.4.1)

Research mode was removed entirely. The `query-docs` MCP tool no longer accepts or forwards a `researchMode` parameter, and the CLI no longer exposes a `--research` flag on `ctx7 docs`.

### CLI — skill commands deprecated

The `ctx7 skills ...` commands are deprecated and will stop working in the next major release. The `context7-mcp` and `find-docs` skills installed by `ctx7 setup` are unaffected.