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Tools & Coding

909 summarised stories in Tools & Coding, each linking back to the original source. Browse all topics →

Friday, 23 January 2026

Unrolling the Codex agent loop

OpenAI 6 months ago 33

Codex CLI uses an agent loop architecture that orchestrates interactions between language models, tools, and prompts through the Responses API. The system cycles through model inference, tool calls, and prompt updates to handle sequential task execution. This design enables Codex to manage complex workflows by coordinating multiple components in a structured feedback loop.

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