Release / 9 Oct 2026 / with @upstash/[email protected], [email protected], mcpb-v4.1.2, [email protected], @upstash/[email protected], mcpb-v4.1.3, @upstash/[email protected], mcpb-v4.2.0, @upstash/[email protected], [email protected], mcpb-v4.2.1, [email protected], @upstash/[email protected], @upstash/[email protected], mcpb-v4.3.0, [email protected]

Context7 @upstash/[email protected]

Prioritize documentation examples in your programming language.

All of Context7

Before you upgrade to @upstash/[email protected]

3 to fix

Upgrade Node.js to 22.13.0 or later for `ctx7` 0.5.14+. The CLI package now declares this minimum; the root README's Node.js 18 guidance is stale.

Action requiredAffects: CLI users on older Node.js versions.Inferred

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upstash/context7/blob/[email protected]/packages/cli/package.json

Supply credentials for HTTP `/mcp`, now required by default. Use OAuth access tokens rather than Clerk ID/session JWTs, which return 401. Operators can set `MCP_AUTH_ENFORCEMENT=observe` for anonymous `/mcp` migration.

Action requiredSign in to a Context7 MCP connection using OAuth.Affects: Anonymous HTTP clients, callers using Clerk ID/session JWTs, and HTTP server operators.

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upstash/context7/blob/@upstash/[email protected]/packages/mcp/CHANGELOG.md

Remove `MCP_MAX_SUBSCRIPTIONS`; HTTP `subscriptions/listen` now acknowledges and completes immediately, with no change notifications. Use valid `observe` or `required` values for authentication enforcement settings.

Action requiredConnect coding clients to a locally run documentation server over stdio or HTTP.Affects: HTTP deployments configuring subscriptions or authentication enforcement.Inferred

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Expired OAuth tokens now receive HTTP 401 with an invalid-token challenge. JWT audience mismatches are logged by default; `MCP_OAUTH_AUDIENCE_ENFORCEMENT=required` rejects them, and `MCP_OAUTH_ALLOWED_AUDIENCES` overrides accepted audiences.

Behavior changedAffects: HTTP MCP clients refreshing expired OAuth tokens and operators configuring audience checks.

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upstash/context7/blob/@upstash/[email protected]/packages/mcp/CHANGELOG.md

What changed in @upstash/[email protected]

MCP `query-docs` adds `language`, and CLI `docs` adds `--language`. HTTP credentials are required by default, OAuth tokens are validated more strictly, and the CLI declares Node.js 22.13+.

MCP 4.1.2–4.3.0; CLI 0.5.13–0.6.0; SDK 0.5.1; OpenCode plugin 0.2.0.

New things you can do

Rank documentation examples in the programming language you use.

Added

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Fixed and improved

`query-docs` marks failed documentation requests with `isError`; clients can distinguish invalid IDs, API failures and network errors from documentation.

Now worksRetrieve library documentation and code examples in an MCP coding client.

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upstash/context7/blob/@upstash/[email protected]/packages/mcp/CHANGELOG.md

OpenCode JSONC files with trailing commas are accepted. Setup downloads documentation skills directly from GitHub instead of the deprecated Skill Hub API.

Now worksConfigure Context7 documentation access and rules for coding agents.

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upstash/context7/blob/[email protected]/packages/cli/CHANGELOG.md

Removing a Context7 rule section preserves the rest of `AGENTS.md` and `GEMINI.md`, normalizing only the section's removal seam.

Now worksRemove Context7-generated agent configuration while preserving unrelated MCP entries.

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upstash/context7/blob/[email protected]/packages/cli/CHANGELOG.md

Request timeouts and cancellation also apply while awaiting an asynchronous authentication token provider.

Now worksSearch libraries and retrieve documentation from a TypeScript application.

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upstash/context7/blob/@upstash/[email protected]/packages/sdk/CHANGELOG.md

OpenCode v2 is supported alongside v1 through the plugin's new `setup` entrypoint.

Limit liftedRegister Context7 documentation access through an OpenCode plugin.

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upstash/context7/blob/@upstash/[email protected]/packages/opencode/CHANGELOG.md

Seeded by @iluxav with Codex, from the release's public sources. Each change links to its evidence.