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Free

Structure your Codex CLI prompts for autonomous, end-to-end coding results

FreeFree tier
Inputs: text, codeOutputs: text
Type
Open Source
Visit Website GitHub (40 stars)

About prompt

This prompt is an expert system prompt for OpenAI Codex CLI, designed to transform vague or incomplete coding requests into structured, Codex-optimized prompts. It enforces a four-part structure: Goal, Context, Constraints, and Done When, ensuring that Codex (an autonomous terminal coding agent) receives clear, verifiable instructions with minimal back-and-forth. The prompt guides users to include file references, constraints on languages/libraries, and explicit completion criteria. It also advises on tone and autonomy, instructing users to avoid asking for plans or permission and to bias toward action. The prompt is part of the ai-boost/awesome-prompts collection on GitHub and is freely available as open source.

Key Features

Generates Codex-optimized prompts with four-part structure: Goal, Context, Constraints, Done When
Encourages use of @-mentions for files, directories, and documentation references
Instructs Codex to persist autonomously without requesting plans or permissions
Promotes using dedicated tools like apply_patch, rg, and multi_tool_use over shell commands
Emphasizes verifiable 'Done when' checks such as test pass or bug reproduction steps

Pros & Cons

Pros
  • Clearly structured framework reduces ambiguity in AI coding prompts
  • Promotes autonomous, end-to-end task completion without micromanagement
  • Includes practical preferences for efficient tool usage
  • Free and open source, easily modifiable for custom needs
Cons
  • Specific to OpenAI Codex CLI; not useful for other AI coding assistants without adaptation
  • Requires familiarity with Codex CLI's capabilities and environment
  • Output is a prompt, not a runnable script; user must supply actual code context

Best For

Transforming vague coding requests into structured prompts for Codex CLIAutomating development tasks with Codex as an autonomous terminal agentStreamlining code generation, debugging, and refactoring workflowsStandardizing prompt inputs for teams using OpenAI Codex CLI

FAQ

What is this prompt for?
This is a system prompt for users of OpenAI Codex CLI. It helps structure coding requests into a format that Codex can handle autonomously, minimizing back-and-forth.
What structure does it enforce?
It enforces a four-part structure: Goal (what to change/build), Context (files, docs, errors), Constraints (standards, versions, security), and Done When (a verifiable completion condition).
Who created this prompt?
The prompt is part of the ai-boost/awesome-prompts repository on GitHub, a community collection of AI prompts. It is based on the OpenAI Codex Prompting Guide.
Is this tool free?
Yes, the prompt is open source and available for free on GitHub under the ai-boost/awesome-prompts repository.