Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
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19cc82f45c* Update Vector Store RAG.json * fix: make starter projects auto refactor not remove selected output (#8400) * Fixed bug where starter projects were refactored incorrectly * fix: improve handling of selected outputs in custom component template builder - Added checks to ensure selected output is valid before attempting to set its state. - Enhanced code readability with comments explaining the logic for selecting outputs. * Set selected output as the previous selected output * Update base.py --------- Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> Co-authored-by: Edwin Jose <edwin.jose@datastax.com> * fix: made clean edges clean after changing dropdown of output (#8460) fixed output considering all outputs not just selected one * refactor(docker): remove --extra deploy flag from uv sync commands (#8485) 🔧 (build_and_push_with_extras.Dockerfile): remove unnecessary uv sync command options to improve build efficiency and reduce redundancy Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> * fix: refactor mcp and freeze tests to be less prone to flaky results (#8486) * Fixed mcp test to be less prone to errors * Fix freeze spec * fix: made button disabled state more congruent, made edit flow details submit on enter (#8339) * Changed textarea classes * Changed flowsettingscomponent to use form * changed edit flow settings to use form and to submit on enter * Reset form data on close * Updated disabled state to have lower opacity instead of to have set background * Fixed loading state of button * Fix: chat memory store issue and fix output types (#8463) * fix chat memory * update template * update update outputs * update update outputs --------- Co-authored-by: Edwin Jose <edwin.jose@datastax.com> * ci: update setup-uv to possibly fix caching (#8490) * update templates * update templates * First round of template updates * Update templates * fix: Update SaaS, Social Media, and YouTube json file (#8441) * update SaaS, Social Media, and YouTube json file * fix: make starter projects auto refactor not remove selected output (#8400) * Fixed bug where starter projects were refactored incorrectly * fix: improve handling of selected outputs in custom component template builder - Added checks to ensure selected output is valid before attempting to set its state. - Enhanced code readability with comments explaining the logic for selecting outputs. * Set selected output as the previous selected output * Update base.py --------- Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> Co-authored-by: Edwin Jose <edwin.jose@datastax.com> * fix: made clean edges clean after changing dropdown of output (#8460) fixed output considering all outputs not just selected one * refactor(docker): remove --extra deploy flag from uv sync commands (#8485) 🔧 (build_and_push_with_extras.Dockerfile): remove unnecessary uv sync command options to improve build efficiency and reduce redundancy Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> * fix: refactor mcp and freeze tests to be less prone to flaky results (#8486) * Fixed mcp test to be less prone to errors * Fix freeze spec * fix: made button disabled state more congruent, made edit flow details submit on enter (#8339) * Changed textarea classes * Changed flowsettingscomponent to use form * changed edit flow settings to use form and to submit on enter * Reset form data on close * Updated disabled state to have lower opacity instead of to have set background * Fixed loading state of button * Fix: chat memory store issue and fix output types (#8463) * fix chat memory * update template * update update outputs * update update outputs --------- Co-authored-by: Edwin Jose <edwin.jose@datastax.com> * ci: update setup-uv to possibly fix caching (#8490) * update json * fix custom component * revert change --------- Co-authored-by: Lucas Oliveira <62335616+lucaseduoli@users.noreply.github.com> Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> Co-authored-by: Edwin Jose <edwin.jose@datastax.com> Co-authored-by: Cristhian Zanforlin Lousa <cristhian.lousa@gmail.com> * fix: templates (#8499) * basic-prompting-template-updated * show-system-message * names * blog-writer-tested * financial-report-parser * image-sentiment-analysis * seo-keyword-generator * seo-keyword-generator * Merge branch 'fix-vector-search-template' into mendons-template-branch --------- Co-authored-by: Eric Hare <ericrhare@gmail.com> * Update Basic Prompting.json * Update Blog Writer.json * Further template updates * Update Image Sentiment Analysis.json * Update templates * Update Financial Report Parser.json * Update Market Research.json * Update Market Research.json * update several templates * Update Image Sentiment Analysis.json * Update Market Research.json * Update image sentiment analysis template * Update Market Research.json * Update Custom Component Maker.json * Update Custom Component Maker.json * Update Hybrid Search RAG.json * Update Hybrid Search RAG.json * Update Hybrid Search RAG.json * More template updates * Update Financial Report Parser.json * updated templates * change custom component maker * Update Twitter Thread Generator.json * updates from main * change model * Update Research Translation Loop.json * expanded output component to fix tests * update template * autofix * fix error * fix change back * change back * ci: Skip truncated values test for refactoring (#8670) * refactor: simplify init target by removing cache cleanup and adding pre-commit hook (#8590) * build: add pyyaml dependency * refactor: simplify init command by removing cache cleaning and langflow run call * refactor: simplify init target by removing cache cleanup and adding pre-commit hook * refactor: update langchain_core.prompts import paths to use specific modules --------- Co-authored-by: Edwin Jose <edwin.jose@datastax.com> * feat: update structured output to multiline input and revise system prompt (#8585) * Update structured_output.py * [autofix.ci] apply automated fixes * Update structured_output.py * [autofix.ci] apply automated fixes * [autofix.ci] apply automated fixes (attempt 2/3) * update to prompt * template updates * Update src/backend/base/langflow/components/processing/structured_output.py * [autofix.ci] apply automated fixes * Update src/backend/base/langflow/components/processing/structured_output.py * Update src/backend/base/langflow/components/processing/structured_output.py * Update src/backend/base/langflow/components/processing/structured_output.py * [autofix.ci] apply automated fixes --------- Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com> * feat: add sessions endpoint with session management enhancements (#8596) * 📝 (monitor.py): Add endpoint to get sessions and handle session_id encoding for API requests 📝 (use-get-messages-mutation.ts): Implement a mutation function to fetch messages with query parameters and handle session_id encoding for API requests 📝 (use-get-messages-polling.ts): Ensure proper encoding of session_id for API requests in polling mutation 📝 (use-get-messages.ts): Handle session_id encoding for API requests in messages query 📝 (new-modal.tsx): Implement functions to handle session deletion and proper encoding of session_id for API requests 📝 (utils.ts): Add functions to encode, decode, validate, format, and prepare session IDs for API requests * 📝 (constants.ts): Add SESSIONS constant to API URLs for monitoring sessions 🔧 (use-delete-messages.ts): Add queryClient to UseRequestProcessor to invalidate sessions query ✨ (use-get-sessions-from-flow.ts): Introduce useGetSessionsFromFlowQuery to fetch sessions from flow 🔧 (use-rename-session.ts): Change refetchQueries to invalidateQueries for useGetSessionsFromFlowQuery 🔧 (custom-new-modal.tsx): Update import path for IOModal to playground-modal 🔧 (session-selector.tsx): Add setActiveSession function to handle setting active session 🔧 (sidebar-open-view.tsx): Add setActiveSession function to handle setting active session ♻️ (new-modal.tsx): Refactor IOModal into playground-modal and update functionality ♻️ (playground-modal.tsx): Refactor IOModal to handle playground-specific functionality ⬆️ (flowStore.ts): Add newChatOnPlayground state and setNewChatOnPlayground function ⬆️ (index.ts): Update FlowStoreType to include newChatOnPlayground and setNewChatOnPlayground * 🔧 (pyproject.toml): update testpaths to point to the correct directory for tests ✨ (test_session_endpoint.py): add unit tests for sessions endpoint with flow_id filtering ♻️ (session-selector.tsx): refactor to trim editedSession before setting it ♻️ (sidebar-open-view.tsx): refactor to set visibleSession instead of activeSession * ✨ (use-get-sessions-from-flow.ts): Always include the flow ID as the default session if it's not already present ♻️ (playground-modal.tsx): Refactor setting sessions to include currentFlowId as the default session if not present, and handle visibility of sessions more efficiently * ♻️ (use-get-messages-mutation.ts): remove unused imports and refactor code for better readability and maintainability * ✨ (test_session_endpoint.py): refactor test function names for better clarity and consistency * ✨ (create-new-session-name.ts): add function to generate a new session name based on the current date and time 🔧 (playground-modal.tsx): import createNewSessionName function to dynamically set a new session name when no session is visible * [autofix.ci] apply automated fixes * ✨ (monitor.py): rename get_sessions endpoint to get_message_sessions for clarity and consistency 🔧 (constants.ts): remove unused SESSIONS constant from API URLs 🔧 (use-delete-messages.ts): remove commented out code and unnecessary comments ✨ (use-delete-sessions.ts): add functionality to delete sessions in frontend 🔧 (use-get-sessions-from-flow.ts): update API endpoint for getting sessions to match backend changes 🔧 (playground-modal.tsx): add functionality to delete sessions and associated messages in the UI, update UI optimistically, and handle errors appropriately * [autofix.ci] apply automated fixes * 🐛 (monitor.py): Fix type hinting issue in delete_messages function 📝 (monitor.py): Add comments and improve readability in test_messages_endpoints.py 📝 (session_endpoint.py): Update endpoint paths for consistency and clarity in test_session_endpoint.py * [autofix.ci] apply automated fixes * fix: update SQL statement to use col() for session_id filtering in get_message_sessions function --------- Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com> Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> * fix: implemented cached values and temporary MCP servers on MCP component (#8628) * Added actionCount to fetch only servers without actionCount * Updated queries and uses to use servers without action data first, and then to fetch them * removed comment * updated constants * Added loading dropdown * Make options persist * Implemented new value format for McpComponent and implemented saving and removing temp Mcp Server if config is existent * Changed value type * Implemented cache and saving the server config * Fixed mcp server test * fix backend formatting * fixed lint * Added await * Fixed save button not appearing when no servers are available * added condition to only show save button when options is not null * template autofix * change template * update text sentiment analysis * change basic prompt back * change image sentiment back * update text sentiment and twitter * Update Twitter Thread Generator.json * Add back the input for the chat * add change * fix text sentiment * update research translation * Update Research Translation Loop.json --------- Co-authored-by: Eric Hare <ericrhare@gmail.com> Co-authored-by: Edwin Jose <edwin.jose@datastax.com> Co-authored-by: Lucas Oliveira <62335616+lucaseduoli@users.noreply.github.com> Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org> Co-authored-by: Cristhian Zanforlin Lousa <cristhian.lousa@gmail.com> Co-authored-by: Mendon Kissling <59585235+mendonk@users.noreply.github.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com> |
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| .github | ||
| .vscode | ||
| deploy | ||
| docker | ||
| docker_example | ||
| docs | ||
| scripts | ||
| src | ||
| test-results | ||
| .coderabbit.yaml | ||
| .composio.lock | ||
| .env.example | ||
| .eslintrc.json | ||
| .gitattributes | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| DEVELOPMENT.md | ||
| eslint.config.js | ||
| LICENSE | ||
| Makefile | ||
| pyproject.toml | ||
| README.md | ||
| render.yaml | ||
| SECURITY.md | ||
| uv.lock | ||
Caution
Users must update to Langflow >= 1.3 to protect against CVE-2025-3248.
Langflow is a powerful tool for building and deploying AI-powered agents and workflows. It provides developers with both a visual authoring experience and a built-in API server that turns every agent into an API endpoint that can be integrated into applications built on any framework or stack. Langflow comes with batteries included and supports all major LLMs, vector databases and a growing library of AI tools.
✨ Highlight features
- Visual builder interface to quickly get started and iterate .
- Source code access lets you customize any component using Python.
- Interactive playground to immediately test and refine your flows with step-by-step control.
- Multi-agent orchestration with conversation management and retrieval.
- Deploy as an API or export as JSON for Python apps.
- Observability with LangSmith, LangFuse and other integrations.
- Enterprise-ready security and scalability.
⚡️ Quickstart
Langflow requires Python 3.10 to 3.13 and uv.
- To install Langflow, run:
uv pip install langflow -U
- To run Langflow, run:
uv run langflow run
- Go to the default Langflow URL at
http://127.0.0.1:7860.
For more information about installing Langflow, including Docker and Desktop options, see Install Langflow.
📦 Deployment
Langflow is completely open source and you can deploy it to all major deployment clouds. To learn how to use Docker to deploy Langflow, see the Docker deployment guide.
⭐ Stay up-to-date
Star Langflow on GitHub to be instantly notified of new releases.
👋 Contribute
We welcome contributions from developers of all levels. If you'd like to contribute, please check our contributing guidelines and help make Langflow more accessible.