FIELD ATLAS / ISSUE 001
Build from the interface,not the model name.
A research editorial for developers mapping the durable parts of the OpenAI platform: response items, tool contracts, schemas, agent loops, realtime sessions, and the evidence needed to ship them.
SYSTEM / FOUR DURABLE QUESTIONS
Six field guides, one capability map, zero invented benchmarks.
- 01
REQUEST
Start with the Responses API and typed items.
- 02
ACTION
Give tools explicit contracts and ownership.
- 03
SHAPE
Treat schemas, refusals, and validation as product behavior.
- 04
LOOP
Choose who owns orchestration, state, and approval.
Evidence desk