Data flow diagrams
Describe the pipeline. Get a data flow diagram and the Mermaid code.
Name the sources, the sync tool, the warehouse, the tests, and the dashboards. Wavelength places each one and connects them in order.
Free plan, no card. Starter $4.99 and Pro $9.99 per month.
Faster than dragging boxes
You describe the pipeline in a minute. You do not hunt for shapes or line up arrows.
Ready for the repo
Copy the flow as Mermaid code and paste it into a README, a pull request, or a wiki page.
Clear failure paths
Say what happens when a test fails, and the branch appears with its own path.
Data flows teams map with Wavelength
Postgres to Snowflake
A replication pipeline with Airbyte.
See the exampleSalesforce to Snowflake
Fivetran sync with dbt models on top.
See the exampledbt data quality checks
What runs, what fails, and who gets the alert.
See the exampleKafka streaming
Producers, topics, consumers, and sinks.
See the exampleStripe billing to warehouse
Billing events into the warehouse for revenue reports.
See the exampleRAG chatbot architecture
Documents, embeddings, the vector store, and the model.
See the exampleFrom the conversation to the map
An example walkthrough for data flow diagrams. Wavelength draws each step as the speaker names it.
What someone says"Orders live in Postgres. Fivetran loads them into Snowflake. dbt runs the tests. If the tests pass, analysts see it in Tableau. If a test fails, it alerts the data channel in Slack."
- Data store: Postgres orders
- System: Fivetran loads Snowflake
- Decision: Do the dbt tests pass?
- Yes branch: Tableau for analysts
- No branch: Alert in Slack
Features for data flow diagrams
Live diagram building
Hold the mic and talk. Each person, system, and step appears on the flow as you name it. A question like "Tests pass?" becomes a decision with its branches.
Dashed amber inferred edges
A connection that the AI inferred, and did not hear, shows as a dashed amber line until you confirm it.
Open file exports
Export to PNG, PDF, PowerPoint, draw.io, Mermaid, and BPMN 2.0. Your flows go where your team works.
Visio, draw.io, and Mermaid import
Import .vsdx, .drawio, and .mmd files. Each file becomes a flow that you can edit by voice.
Horizontal or vertical layout
Switch the layout with one click. The flow keeps its steps and connections.
Edit by voice or text
Ask for a change, for example "add an approval step after review", and the AI edits the flow.
Popular integrations for data flow diagrams
MCPClaude Code, Cursor, and VS Code
Add the Wavelength MCP server and map a system from inside your code editor.
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MCPClaude and ChatGPT
Add the Wavelength connector. Ask your AI assistant to create, read, or edit a flow in plain English.
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Import and exportMermaid
Copy the Mermaid code for docs and repos, or import .mmd and .mermaid files.
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Import and exportdraw.io
Export a flow as a .drawio file. Import .drawio and .xml files and edit them by voice.
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Import and exportLucidchart
Import Lucidchart diagrams exported as .vsdx. Each file becomes a flow you can edit by voice.
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All plansChrome side panel
Open Wavelength beside any browser tab and build the diagram while the call runs.
Get more detailsPlans and pricing
5 saved flows. No card.
50 new flows a month, 4 mic hours, your own logo.
Unlimited flows, 10 mic hours, teams, version history.
7 days of Pro, no card. See pricing.
Common questions
Can I export a data flow diagram as Mermaid?
Yes. Copy the Mermaid code from the Export menu, or open the flow in Mermaid Live.
Can I edit a diagram from my code editor?
Yes. Add the Wavelength MCP server to Claude Code, Cursor, or VS Code. Your AI assistant can then create and edit flows.
Does Wavelength connect to my warehouse?
No. Wavelength draws the pipeline from what you say or paste. It does not read your databases.
What does the dashed amber line mean?
It is a connection that Wavelength inferred and did not hear. Confirm it or delete it before you share the diagram.
Put Wavelength to work on data flow diagrams
Talk through a process. Wavelength draws the flow.
The free plan needs no card. The demo needs no account.