docs: 1.6 feature branch

[mendonk]

This branch accepts docs PRs for Langflow v1.6 features, and will merge at release.

Preview build

Release notes

Preview links:

• OpenAI Responses endpoint
• MCP OAuth
• Docling advanced parsing
• Traceloop

Before release, check:

1. Links from release notes to added feature.
2. Add MCP icon back when the extended icon component is merged.
3. Parity with main.

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Walkthrough

Documentation overhaul introducing an OpenAI Responses-compatible endpoint doc, large-scale reorganization toward provider-specific Bundles, new/expanded vector-store bundle pages, knowledge bases docs, Docling advanced parsing, numerous icon/capitalization standardizations, increased default file upload size to 1024 MB, release notes for 1.6.0, and multiple concept/integration/support updates.

Changes

Cohort / File(s)	Summary
— OpenAI Responses API docs	Documents OpenAI-compatible Responses endpoint and references across docs.
— docs/docs/API-Reference/api-openai-responses.mdx, docs/docs/API-Reference/api-reference-api-examples.mdx, docs/docs/Concepts/concepts-publish.mdx	New page for POST /api/v1/responses; adds endpoint entry in API examples; adds “Run flows with OpenAI Responses” section/link.
— Upload size default updates	Default upload limit increased from 100 MB to 1024 MB.
— docs/docs/API-Reference/api-files.mdx, docs/docs/Concepts/concepts-file-management.mdx, docs/docs/Components/components-data.mdx	Update docs to reflect 1024 MB default; environment variable guidance unchanged.
— Bundles icon/capitalization sweep	Presentational updates: add Blocks icon before Bundles links; standardize “Language model”/“Embedding model” casing.
— docs/docs/Components/bundles-*.mdx (multiple: anthropic, arxiv, azure, baidu, bing, cloudflare, cohere, deepseek, duckduckgo, exa, glean, groq, huggingface, ibm, icosacomputing, lmstudio, maritalk, mem0, mistralai, novita, nvidia, ollama, openai, openrouter, perplexity, sambanova, searchapi, vertexai, wikipedia, xai)`	Insert Icon before Bundles link; adjust link text casing; minor formatting fixes.
— New/expanded vector-store bundle docs	Add new pages and expand vector-store documentation with shared partials and parameters.
— New pages docs/docs/Components/bundles-{chroma,clickhouse,couchbase,elastic,faiss,milvus,mongodb,pgvector,pinecone,qdrant,serper,supabase,upstash,vectara,weaviate}.mdx	New bundle docs with PartialParams/ConditionalParams, VectorStoreInstance, and VectorSearchResults; provider-specific parameter tables and tips.
— Major rewrites docs/docs/Components/bundles-{datastax,cassandra,redis,google}.mdx	DataStax: comprehensive Astra DB/Graph/HCD refactor with partials and new sections; Cassandra: new bundle page (vector store, chat memory, graph); Redis: expanded vector store section and params; Google: restructure legacy section via PartialLegacy and reorganize search components.
— New bundle component sections	Adds new component docs under existing bundles.
— docs/docs/Components/bundles-amazon.mdx	Adds “S3 Bucket Uploader” section with parameters and behavior.
— docs/docs/Components/bundles-cohere.mdx	Adds “Cohere Rerank” section with parameters.
— Components docs restructuring	Broad updates: new tabs/partials, wording standardization, legacy handling, and new/removed pages.
— Additions/overhauls docs/docs/Components/components-{models,embedding-models,processing,helpers,data,bundles}.mdx, docs/docs/Components/components-custom-components.mdx, docs/docs/Components/components-kb.mdx	Models: tabbed Chat/Drivers/Agents; Embedding models: reworked narrative + Vector RAG partials; Processing: param additions for LLM Router + legacy via PartialLegacy; Helpers: tabbed Retrieve/Store params; Data: Docling advanced parsing, larger file types list, Tabs for outputs; Bundles: tabs, legacy bundles section, Local DB blocks; Custom components: directory structure clarified; Knowledge Bases: new page with params and storage details.
— Removals docs/docs/Components/components-{vector-stores,memories}.mdx, docs/docs/Components/components-agents.mdx (legacy section)	Delete Vector Stores and Memories pages; remove legacy Agent components block.
— Concepts updates	Menu terminology, new features, and knowledge docs.
— docs/docs/Concepts/concepts-{components,flows,overview,file-management,data-types,playground,knowledge}.mdx	Introduce Core components vs Bundles, lock a flow, workspace guidance, file size default, search-based compatibility hints, lowercase terminology, new Manage vector data page using partials.
— Integrations and MCP docs	Installation/usage changes, new integration page, and MCP UI tips.
— docs/docs/Integrations/integrations-instana-traceloop.mdx	New Traceloop-to-Instana instrumentation guide.
— docs/docs/Integrations/Docling/integrations-docling.mdx	Version-aware Docling install; updated usage steps/links.
— docs/docs/Integrations/Google/integrations-google-big-query.mdx	Replace Tabs with Icon; updated selection steps.
— docs/docs/Integrations/Nvidia/integrations-nvidia-ingest.mdx	Wording updates (“vector store component”).
— MCP-related docs/docs/Components/components-tools.mdx, docs/docs/Components/components-agents.mdx, docs/docs/Components/mcp-client.mdx, docs/docs/Concepts/mcp-server.mdx, docs/docs/Tutorials/mcp-tutorial.mdx	Tools page deprecated/legacy consolidation; Agents minor edits; MCP client/tutorial add McpIcon and management tips; MCP server doc generalizes client setup and revises steps.
— Support and release notes	New release notes with 1.6.0 and troubleshooting icon usage.
— docs/docs/Support/release-notes.mdx, docs/docs/Support/troubleshooting.mdx	Release 1.6.0 notes (knowledge bases, Docling, UI/menu changes, upload size, new integrations); troubleshooting uses icons and Bundles/legacy pointers.
— API/reference and developing docs	Minor additions and text updates.
— docs/docs/Develop/{develop-application,logging,memory,Clients/typescript-client}.mdx	Add Icon usage; wording/formatting tweaks; new See also to Manage vector data.
— Tutorials and Agents docs	Text/link casing normalization.
— docs/docs/Tutorials/{chat-with-files,chat-with-rag}.mdx, docs/docs/Agents/{agents,agents-tools}.mdx	Remove bolding and links adjustments; lowercase references; minor UI text changes.
— Partials and env vars	Introduce new MDX partials and env var.
— docs/docs/_partial-{conditional-params,kb-summary,legacy,vector-rag-blurb,vector-rag-flow,vector-search-results,vector-store-instance}.mdx, docs/docs/Configuration/environment-variables.mdx	New partials for shared docs content; add LANGFLOW_KNOWLEDGE_BASES_DIR with default path and example.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant Client
  participant API as Langflow API (/api/v1/responses)
  participant Runner as Flow Runner
  participant Flow as Flow (by flow_id/model)
  Client->>API: POST /v1/responses {model: flow_id, messages, ...}
  Note right of API: Validate headers (x-api-key, globals), options, previous_response_id
  API->>Runner: Execute request (stream? include?)
  Runner->>Flow: Invoke with inputs
  Flow-->>Runner: Response (dynamic fields)
  alt Streaming
    Runner-->>API: Stream chunks (response.chunk)
    API-->>Client: SSE/data chunks
  else Non-streaming
    Runner-->>API: Final response JSON
    API-->>Client: 200 OK {response, usage, ...}
  end
  opt Tool calls requested
    Note over Runner,Flow: Execute tools (no Tools components support per docs)
    Runner-->>API: tool_call.results (if include requested)
    API-->>Client: Include tool_call.results
  end
  opt Continue conversation
    Client->>API: POST with previous_response_id
    API->>Runner: Load context and continue
  end

Loading

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Possibly related PRs

• feat: OpenAI compatibility #9069 — Introduces backend support for the OpenAI Responses-compatible endpoint documented here.
• docs: update file size limit to 1024 mb #9397 — Updates docs to raise the default file upload size to 1024 MB, matching this PR’s changes.
• docs: 1.5 release #8387 — Broad docs refactor moving provider components into Bundles and adopting partials, overlapping extensively with this reorganization.

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch docs-1.6

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yarn run v1.22.22 $ docusaurus build [INFO] [en] Creating an optimized production build... [info] [webpackbar] Compiling Client [info] [webpackbar] Compiling Server [success] [webpackbar] Server: Compiled with some errors in 1.04m [success] [webpackbar] Client: Compiled with some errors in 1.58m [ERROR] Client bundle compiled with errors therefore further build is impossible. Error: MDX compilation failed for file "/home/runner/work/langflow/langflow/docs/docs/Develop/memory.mdx" Cause: Markdown link URL is mandatory in "docs/Develop/memory.mdx" file (title: Component API keys, line: 62). Details: Error: Markdown link URL is mandatory in "docs/Develop/memory.mdx" file (title: Component API keys, line: 62). error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

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Build failure! ❌

yarn run v1.22.22 $ docusaurus build [INFO] [en] Creating an optimized production build... [info] [webpackbar] Compiling Client [info] [webpackbar] Compiling Server [success] [webpackbar] Server: Compiled with some errors in 1.04m [success] [webpackbar] Client: Compiled with some errors in 1.57m [ERROR] Client bundle compiled with errors therefore further build is impossible. Error: MDX compilation failed for file "/home/runner/work/langflow/langflow/docs/docs/Develop/memory.mdx" Cause: Markdown link URL is mandatory in "docs/Develop/memory.mdx" file (title: Component API keys, line: 62). Details: Error: Markdown link URL is mandatory in "docs/Develop/memory.mdx" file (title: Component API keys, line: 62). error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

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[aimurphy]

@jordanrfrazier could you please review line 148-180 again, and please confirm that it is correct?

IIRC, LANGFLOW_AUTO_LOGIN doesn't control authentication for the API - only the visual editor and CLI - correct?

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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