An AI agent on monday.com is software that acts inside the monday data model. It triggers on a specific event, reads context from workspaces and boards, calls a large language model to make a judgment or generate output, and writes the results back to items. Custom agents that register through the Custom Agents surface also get first-class platform treatment: they can be assigned to items and mentioned in updates using @, exactly like a team member.
monday brands the category "monday agents" and describes it as an unlimited workforce of ready-made or custom agents that act where the team already works. That framing captures the point: the agent runs inside the workspace the team uses, not in a separate app.
Three layers exist today. Native monday agents. The AI Agent Builder. Custom development. Each has a different tradeoff between speed to first agent, ceiling on customization, and control over prompt, model, and cost.
This guide walks the landscape, the data model and integration surfaces, the developer stack for custom builds, the agent-specific platform capabilities, trigger patterns, the decision framework for choosing a layer, the anatomy of a well-designed custom agent, where to start, common pitfalls, cost model, and a glossary.