casen view

casen view spawns a local HTTP server and opens the system browser to display BPMN diagrams, DMN decision tables, and Camunda forms. All rendering happens server-side — no browser plugins required.

Commands

casen view
├── open    — view any mix of .bpmn, .dmn, and .form files (auto-detects type)
├── bpmn    — view BPMN files rendered as SVG
├── dmn     — view DMN decision tables
└── form    — view Camunda form layouts

Subcommands

casen view open

Accepts any combination of .bpmn, .dmn, and .form files or directories. File type is detected automatically from the extension.

# Mixed file types
casen view open order.bpmn routing.dmn review.form

# Entire project folder — all supported files get tabs
casen view open ./project/

# Mix files and folders
casen view open ./processes/ extra.dmn review.form

casen view bpmn

Renders BPMN diagrams server-side as SVG using exportSvg from @bpmnkit/core.

# Single file
casen view bpmn process.bpmn

# All .bpmn files in a folder
casen view bpmn ./processes/

# Multiple specific files
casen view bpmn order.bpmn payment.bpmn shipping.bpmn

casen view dmn

Renders DMN decision tables as ASCII art in a monospace panel.

casen view dmn eligibility.dmn
casen view dmn ./decisions/

casen view form

Renders Camunda form layouts (.form files) as ASCII art in a monospace panel.

casen view form approval.form
casen view form ./forms/

Folder support

Pass a directory instead of individual files. The viewer scans the top level of the directory for files with the matching extension and gives each one its own tab.

# All .bpmn files in ./processes/
casen view bpmn ./processes/

# All supported types in ./project/
casen view open ./project/

Flags

All subcommands accept the same flags:

Flag	Description	Default
--port	Port for the local server	3044
--theme	Color theme: light or dark	light
--no-open	Do not open the browser automatically	false

# Dark theme on a custom port without auto-opening
casen view bpmn process.bpmn --theme dark --port 8080 --no-open

Tabbed navigation

When multiple files are loaded, the viewer renders a tab bar at the top. Click a tab to switch diagrams. Tabs show the filename and are colour-coded by type (BPMN / DMN / Form).

Stopping the server

Press Ctrl+C in the terminal where casen view is running. The server shuts down cleanly.

Usage in an AI workflow

# Generate a process, then immediately view it
casen generate bpmn --template approval --process-id approve
casen view bpmn approve.bpmn

# Inspect a folder of processes together
casen view open ./processes/

# After patching an existing file, verify the result
casen generate bpmn --input order.bpmn --patch '...'
casen view bpmn order.bpmn --no-open --port 3044