I built three custom agents using the GitLab Duo Agent Platform. Each agent has a carefully engineered system prompt for structured output and agentic behavior. Agents are powered by Anthropic Claude models via GitLab Duo, with Vertex AI reasoning added for smarter carbon forecasting. The agents work together manually in Duo Chat (full flow creation was limited due to beta access). All configuration is done through YAML, and the project is hosted in the official hackathon participant namespace.
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