How can plugin authors add icons in GitHub Copilot App?

[chagong]

I'm working on mobile-use, a plugin with an MCP server and a skill. What is the supported way for plugin authors to provide a custom plugin icon in GitHub Copilot App, including for plugins listed in Awesome Copilot?

I noticed that the Azure DevOps plugin manifest declares "logo": "assets/azure-devops.svg", but I couldn't find a logo field in the Agent Plugins 1.0 schema. Is there a supported equivalent for Agent Plugins 1.0, or is logo specific to a legacy format or particular Copilot surface? Are there any requirements for the image format or path?

Separately, mobile-use advertises an MCP server icon via serverInfo.icons, but I don't see it in Copilot App. Is that metadata supported by the app?

I also asked in #6345. Thanks for any guidance or documentation!

[Sagargupta16]

logo is not an Agent Plugins 1.0 field. The 1.0 schema is closed (additionalProperties: false), and the spec says clients report and ignore unknown top-level fields. The Azure DevOps manifest you linked has no $schema, so Copilot loads it as a legacy plugin (CLI plugin reference), and its top-level logo is not in either documented field table.

In a 1.0 manifest, client-specific data goes under extensions, keyed by the client's namespace. Copilot's is com.github.copilot, and that is where this repo's own plugins put their image (draw/plugin.json):

"extensions": {
  "com.github.copilot": {
    "logo": "assets/preview.png"
  }
}

The only written requirements are for canvas extensions in CONTRIBUTING.md: the path must be exactly assets/preview.png, and 1280x720 (16:9, subject in the centre 600x600) is recommended. That is a preview image, not a square icon, and the docs do not say whether Copilot App uses it for a non-canvas plugin like mobile-use, so add it to plugins/mobile-use/ and check in the app.

For the Awesome Copilot listing, the mobile-use entry in plugins/external.json has no image field and is pinned to a commit (source.sha), so the image has to live in your plugin folder and the entry needs the new sha.

serverInfo.icons is not mentioned in the Copilot plugin docs; only the Copilot team can say whether the app reads it.

[chagong]

Got it. Thanks for the answer.