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Exercise 2: Plugin Bridge

Duration: 20 min | Module: 2 — Plugin Ecosystem

Objective

Import your existing plugin library into Antigravity CLI, selectively enable/disable plugins, and validate a sample custom plugin.

Part 1: Import Plugins (7 min)

# Check what's currently in agy
agy plugin list

# Import everything from Gemini CLI
agy plugin import gemini

Read the output carefully:

  • Which plugins were imported?
  • Which components did each plugin contribute (skills, commands, mcpServers, agents)?
  • Were any skipped? Why?
# See the updated list
agy plugin list | python3 -m json.tool

Question: What plugins are now available that weren't before?

Part 2: Test an Imported Plugin (5 min)

Launch agy and try a command from one of the imported plugins:

agy

If code-review was imported:

> /code-review Review the main entry point of this project.

If gemini-deep-research was imported:

> Use the deep research capability to find best practices for error handling in Node.js APIs.

Part 3: Disable and Re-enable (3 min)

# Disable a plugin you just imported
agy plugin disable <plugin-name>

# Confirm it's disabled
agy plugin list | python3 -m json.tool

# Re-enable it
agy plugin enable <plugin-name>

Part 4: Validate the Sample Plugin (5 min)

The workshop repo includes a sample plugin:

ls samples/plugins/workshop-helpers/

# Validate its structure
agy plugin validate samples/plugins/workshop-helpers/

Then intentionally break it and see what validation catches:

# Edit the manifest to remove a required field (use any text editor)
# Then re-validate
agy plugin validate samples/plugins/workshop-helpers/

Restore the manifest when done.

Completion Criteria

  • [ ] agy plugin import ran successfully and imported at least one plugin
  • [ ] Tested at least one command from an imported plugin
  • [ ] Successfully disabled and re-enabled a plugin
  • [ ] agy plugin validate returned a valid result on the sample plugin