OpenAI's new tools for building agents
This OpenAI article is useful as a baseline for Responses API, built-in tools, tracing, evaluations, and how agent platforms are getting structured.
Source
Why I saved it
This is a good baseline read for the direction of agent APIs.
The useful part is not only “call a model.” It is the combination of model calls, built-in tools, tracing, and evaluations. Those are the pieces that make agent behavior easier to inspect and improve.
My notes
- The Responses API is designed for combining models and tools.
- Tracing matters because agents can fail across many small steps.
- Evaluations matter because prompts and model choices should be measured.
- Stored context and tool outputs need clear privacy and data rules.
What I want to remember
An agent product should include evaluation and tracing early. Otherwise every improvement becomes a feeling instead of evidence.