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Data flow diagrams

Say how the data moves. Watch the pipeline draw itself.

Name the sources, the sync tool, the warehouse, the tests, and the dashboards. Wavelength places each one and connects them in order.

Start freeTry the live demo

Free plan, no card. Starter $4.99 and Pro $9.99 per month.

DATA STOREPostgres SYSTEMFivetran DECISIONTests pass? Yes SYSTEMTableau No SYSTEMAlert in Slack Dashed amber: a connection the AI inferred. Confirm it before you share.
Example: the flow Wavelength builds from the walkthrough below.

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 example

Salesforce to Snowflake

Fivetran sync with dbt models on top.

See the example

dbt data quality checks

What runs, what fails, and who gets the alert.

See the example

Kafka streaming

Producers, topics, consumers, and sinks.

See the example

Stripe billing to warehouse

Billing events into the warehouse for revenue reports.

See the example

RAG chatbot architecture

Documents, embeddings, the vector store, and the model.

See the example

See all flow examples

From the conversation to the map

This is an example walkthrough. Wavelength places each part on the canvas as it hears 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."
What Wavelength builds
  1. Data store: Postgres orders
  2. System: Fivetran loads Snowflake
  3. Decision: Do the dbt tests pass?
  4. Yes branch: Tableau for analysts
  5. No branch: Alert in Slack

Features for data flow diagrams

Live diagram building

Hold the mic and talk. Actors, systems, decisions, and data stores appear on the canvas as you name them.

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 diagrams do not get locked in.

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

MCP

Claude Code, Cursor, and VS Code

Add the Wavelength MCP server and map a system from inside your code editor.

Get more details MCP

Claude and ChatGPT

Add the Wavelength connector. Ask your AI assistant to create, read, or edit a flow in plain English.

Get more details Import and export

Mermaid

Copy the Mermaid code for docs and repos, or import .mmd and .mermaid files.

Get more details Import and export

draw.io

Export a flow as a .drawio file. Import .drawio and .xml files and edit them by voice.

Get more details Import and export

Lucidchart

Import Lucidchart diagrams exported as .vsdx. Export a flow as .drawio to open in Lucidchart.

Get more details All plans

Chrome side panel

Open Wavelength beside any browser tab and build the diagram while the call runs.

Get more details

See all integrations

Plans for every team size

Free$0

5 saved flows. No card.

Starter$4.99/month

50 new graphs a month, 4 mic hours, your own logo.

Pro$9.99/month

Unlimited graphs, 10 mic hours, teams, version history.

Annual billing gives you 2 months free. Every new account starts with 7 days of Pro, no card needed. See full pricing.

Additional resources

Data flow diagram examples

Examples of data flow diagrams for pipelines and systems.

Read now

Flow diagram examples

37 example flows for sales, data, IT, finance, and operations.

Read now

Free AI diagram generator

Type a process and get a diagram. No account needed.

Read now

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.

Wavelength for every team

Engineering

Describe the services, queues, stores, and failure paths.

Learn more

IT

The runbook lives in one engineer's head until someone writes it down.

Learn more

Software and SaaS

In a software company, every team explains processes all day.

Learn more

See all solutions

Put Wavelength to work on data flow diagrams

Talk through a process. Watch the diagram build itself.

Start freeTry the live demo

The free plan needs no card. The demo needs no account.