Build your first agent in the console - no code.
Build your first agent
Sign in, add a model provider key, and publish an agent from the console.
Agent kit
agent() and tool() in code: an agent whose every turn and tool call is a durable step.AI
Durable model calls, approvals, guardrails, spend caps, streaming, and observability.
Developers
The durable runtime, the TypeScript SDK, the REST API, and the protocol a runner speaks.
Building with code
The agent kit and the durable runtime underneath it are also available directly in code - the same document a no-code agent publishes, authored by hand instead. Find the sentence closest to your own problem.Running anything else durably
The model call is optional. If you came here with an ordinary backend job rather than an agent, start here.Getting work in and out
Or work straight through the recipes: one complete, paste-and-run workflow per
task.