Langflow

Langflow is a visual builder for AI agents, retrieval applications and MCP servers

See it in action

Product interface

Build a simple agent with connected components

The official quickstart canvas connects a URL tool and calculator to an agent, chat input and chat output. It makes the data flow and tool connections visible before running the chat.

Build a simple agent with connected components
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License

Converted to WebP, aspect ratio preserved; maximum side 2400px, no upscaling.

MIT License

Copyright (c) 2024 Langflow

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Product interface

Inspect a calculator tool call in the playground

The paired quickstart screenshot expands the calculator's input and output and displays the final answer, eight. This is the author's documented run, not a run performed by this site.

Inspect a calculator tool call in the playground
Open full image
License

Converted to WebP, aspect ratio preserved; maximum side 2400px, no upscaling.

MIT License

Copyright (c) 2024 Langflow

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Product overview

Langflow is a powerful tool to build and deploy AI agents and MCP servers. It comes with batteries included and supports all major LLMs, vector databases and a growing library of AI tools.

SOURCE-LISTED CAPABILITIES

What Langflow offers

  1. 01Compose AI workflows visually
  2. 02Connect models and vector stores
  3. 03Build agents and MCP servers
DIFFERENTIATION

What makes it different

It exposes application components through a low-code interface. Integration credentials, retrieval quality and runtime setup remain application responsibilities.

BEST FOR

Who should consider it

  • Developers building AI-enabled applications
  • Teams managing repeatable AI workflows
BEFORE YOU CHOOSE

What to verify

  • Try one real task and compare its output with your requirements.
  • Check what data the service stores, shares, or uses for training.
  • Confirm current pricing, usage limits, and cancellation terms on the official site.
Website checked

Official link checked on Nov 9, 2026. Feature claims have not been independently tested.