🗺️ docs: Document Keenable Web Search

[danny-avila]

Summary

I documented the completed Keenable web-search integration from LibreChat #15288 and Agents #475 across the durable feature and configuration references.

• Explain how Keenable provides keyless search and page extraction while an optional API key raises public rate limits.
• Add the fully keyless keenable + keenable + none stack for admin and per-user configuration.
• Document keenableApiKey, keenableApiUrl, keenableSearchOptions, and keenableScraperOptions, including validated ranges and effective defaults.
• Add KEENABLE_API_KEY, KEENABLE_API_URL, and the environment-only KEENABLE_FETCH_URL to the dotenv reference.
• Add Keenable to the supported search-provider and scraper-provider values.
• Clarify endpoint overrides, attribution headers, persisted user selections, SSRF handling, and the shared optional credential.

Depends on LibreChat-AI/LibreChat#15288 and LibreChat-AI/agents#475.

Change Type

• Documentation update

Testing

• npx prettier --check content/docs/features/web_search.mdx content/docs/configuration/librechat_yaml/object_structure/web_search.mdx content/docs/configuration/dotenv.mdx
• npx fumadocs-mdx
• git diff --check

Test Configuration:

• Node.js 24.16.0
• MDX type generation completed successfully
• The full TypeScript check could not use the current lockfile surface because the existing shared install is stale and lacks current dependencies such as vitest and current Fumadocs exports; CI will validate from the lockfile.

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own changes
• I have made pertinent documentation changes
• My changes do not introduce new warnings
• Local formatting and MDX generation pass
• Any changes dependent on mine have been merged and published in downstream modules.

[danny-avila]

@codex review

Please review the current PR head f24d3b5. Confirm the exact commit and verify the Keenable defaults and the distinction between YAML-mapped KEENABLE_API_URL and environment-only KEENABLE_FETCH_URL.

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Project	Deployment	Actions	Updated (UTC)
librechat-ai	Ready	Preview	Aug 27, 2026 2:16pm

[danny-avila]

@codex review

Please review the exact current PR head f24d3b5518812339b0e483ca4455b78c6be25f8c. This supersedes the abbreviated review request. Confirm the exact commit and verify the Keenable defaults and the distinction between YAML-mapped KEENABLE_API_URL and environment-only KEENABLE_FETCH_URL.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: f24d3b5518

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