gpt-5-5-prompt-writer

To write GPT-5.5 prompts for agentic coding workflows, you need outcome-first task statements, explicit verification loops, reasoning.effort guidance, text.verbosity settings, and XML block contracts to ensure reliable multi-step task execution.

The best way to structure prompts for the Codex CLI and Responses API is to apply explicit tool-use parallelism, decision rules, and XML block contracts, enabling robust result verification and iterative tool orchestration across long-horizon coding tasks.

Verification loops in GPT-5.5 tool-enabled agent workflows are set up by defining explicit decision rules and persistence within your prompt, ensuring the agent evaluates outputs against expected conditions before proceeding to the next multi-step task.

Yes, the GPT-5.5 prompt design process explicitly supports configuring reasoning.effort and text.verbosity parameters, alongside XML block contracts and tool-use parallelism, to optimize agentic automation for complex coding tasks.

You need XML block contracts in agentic coding prompts when executing long-horizon, multi-step tasks that require strict output parsing, explicit tool orchestration, and reliable verification loops across Codex CLI and Responses API environments.