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How to build and modify DomA from its open-source source code with Doma

Clone the repo, build it, and run the dev mode to change how the browser agent behaves.

Authorization notice. Doma is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Remote script. Running npm install pulls third-party packages, so review the dependency list before running the install in a sensitive environment.

Who it is forA developer who wants a custom browser automation agent based on the open-source DomA core for their own internal use.

The problemA prebuilt extension does not fit a specific workflow, and the developer needs to change the agent's code.

The outcomeA locally built DomA extension that includes your changes, loaded into Chrome or Edge for testing.

What you need first

  • Chrome or Edge browser
  • Your own LLM API key from an OpenAI-compatible provider
  • Node.js 20+ only if you build from source

Steps

  1. Install Node.js 20 or later.
  2. Run git clone https://github.com/dom-actions/doma and then cd doma && npm install.
  3. Run npm run build, then load dist/desktop/open as an unpacked extension with Developer mode on.
  4. Run npm run dev to work on the code while developing, and read CONTRIBUTING.md before you send changes.
  5. Confirm your change works in the browser and review the PolyForm Shield License terms before distributing or offering a product.

Prompt for your agent

Clone the dom-actions/doma repo, install dependencies, and run the build so that the output is in dist/desktop/open. Expected output: a built extension folder and a short note of the build result. Verify that dist/desktop/open exists and loads as an unpacked extension in Chrome or Edge.

Caveat. The license forbids using this software or derivatives to provide a product or service that competes with DomA or its commercial edition, so a custom build must be used within those terms.

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