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feat(cursor): adding docs for new langsmith plugin [DOC-1295]#4604

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feat(cursor): adding docs for new langsmith plugin [DOC-1295]#4604
Kathryn May (katmayb) wants to merge 5 commits into
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cursor-langchain-plugin

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@github-actions github-actions Bot added internal langsmith For docs changes to LangSmith labels Jun 24, 2026
@katmayb Kathryn May (katmayb) marked this pull request as ready for review June 25, 2026 14:50
)

Two related navigation/IA changes:

1. **Two-column product dropdown.** The lifecycle products were a flat
switcher. This groups them into two labeled columns so the dropdown
reads as a structured map of the platform.
2. **Consolidated Build overview.** The Build overview existed as two
near-duplicate pages (`oss/python/build-overview` and
`oss/javascript/build-overview`). In `custom` mode the native language
switcher is hidden, so there was no clean way to toggle languages. This
consolidates them into one page with per-section Python/TypeScript tabs.

- **Product dropdown** (`docs.json`): the 7 lifecycle products are
wrapped into two products with `menu` arrays — **AGENT DEVELOPMENT
LIFECYCLE** (Home, Build, Test, Deploy, Monitor) and **PLATFORM**
(No-code agents, Govern). All existing tabs/dropdowns under each stage
are preserved.
- **Consolidated Build overview**: new `src/build-overview.mdx` at route
`/build-overview`, custom mode, with each section wrapped in
Python/TypeScript `<Tabs>`. The old language-specific pages are deleted
and **redirect** to the new page; the home Build card points there.
- **Engine link**: removed the LangSmith Engine link from both Build
overview sidebars (it remains in the two Test tabs that still reference
it).

- **`pipeline/core/builder.py`** — one-line addition registering
`build-overview.mdx` as a shared root page. This is required: the page
must live outside `/oss/` because `_rewrite_oss_links` blindly inserts
the build language into every `/oss/` link, which would corrupt the
page's hardcoded cross-language tab links (`/oss/python/...` becomes
`/oss/python/python/...`). Root pages skip the rewriter, matching how
`index.mdx` already hardcodes `/oss/python/` links.
- **Canonical URL is `/build-overview`** (root), not
`/oss/build-overview` — the latter is impossible for the reason above.
- **ALL-CAPS column headers** are baked into `docs.json` as literal text
per design preference.

- `make build` succeeds; `/build-overview` builds, old language routes
are no longer generated (redirects own them), and all 16 cross-language
tab links render clean with no double-language mangling. All link
targets confirmed present in the build.
- `docs.json` valid; `make lint_prose` clean on changed MDX.

Authored with assistance from an AI coding agent (Claude Code).

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@github-actions github-actions Bot added docs-infra javascript langchain For docs changes to LangChain oss python For content related to the Python version of LangChain projects labels Jun 25, 2026
@github-actions github-actions Bot removed javascript python For content related to the Python version of LangChain projects oss docs-infra langchain For docs changes to LangChain labels Jun 25, 2026
@katmayb Kathryn May (katmayb) changed the title WIP Cursor langchain plugin Cursor langchain plugin Jun 25, 2026
Comment thread src/langsmith/trace-with-cursor.mdx
Updated installation instructions for the LangSmith plugin in Cursor, including a recommended installation method and a warning to restart Cursor after installation.

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fixed installation steps

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Mintlify preview branch generated: preview-cursor-1782516244-310aa48

Site preview: https://langchain-5e9cc07a-preview-cursor-1782516244-310aa48.mintlify.app

Important

Preview links may take a few minutes to start working while the deployment finishes.

Changed documentation pages (preview deep links):

@harisaiharish Hari Harish (harisaiharish) changed the title Cursor langchain plugin feat(cursor): adding docs for new langsmith plugin [DOC-1295] Jun 26, 2026
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