Deep dive into GitLab Duo Agent Platform agent types. Learn about foundational agents, create custom agents for team workflows, and integrate external agents like Claude Code and OpenAI Codex.

GitLab is a complete DevOps platform delivered as a single application, offering integrated tools for version control, CI/CD, issue tracking, and collaboration. Users can learn about GitLab's DevOps workflow, CI/CD pipelines, and collaboration features to streamline their software development lifecycle and accelerate delivery.

GitLab

GitLab Duo Agent Platform offers three types of AI agents: foundational agents (built-in, zero-setup agents for common tasks like code generation, planning, security analysis, and data insights), custom agents (team-specific agents configured with system prompts for specialized workflows), and external agents (background integrations with third-party AI providers like OpenAI Codex and Claude that trigger asynchronously via mentions or assignments). Foundational agents work interactively in chat, custom agents allow behavior customization through prompts and visibility controls, while external agents enable automated code review and issue implementation through platform-triggered workflows.

Understanding agents: Foundational, custom, and external

Customizing agent behavior with AGENTS.md

Choosing the best agent type for your use cases