Codex prompt generator
Create a Codex prompt that gives the agent enough context to finish the job
Turn a rough coding request into a Codex-ready brief with repository discovery, scope boundaries, implementation constraints, tests, and a concrete definition of done.
Add your details, then open the full builder to shape a structured brief.
No signup required. Review the brief before using it.
Build my briefWhat changes
A useful brief makes the missing decisions visible.
- Requires repository discovery
- Constrains autonomous scope
- Defines verification before completion
Example output
Codex implementation brief
Task: add team invitations to the existing Next.js SaaS. Inspect first: - current auth, membership, email, and database patterns - existing server-action or route-handler conventions - authorization boundaries for team owners and members Implement the smallest safe vertical slice: 1. owner creates an invitation 2. duplicate active invitations are rejected 3. invited user accepts into the correct team 4. expired, revoked, unauthorized, and already-member states are handled Constraints: - preserve the current auth provider - do not expose membership data across teams - reuse project patterns before adding dependencies Done when: - tests cover success and failure paths - lint/build pass - return files changed, behavior verified, and remaining risks
Practical guide
What makes this brief useful
Codex performs best when the prompt acts like a compact engineering handoff: what outcome matters, what must be inspected before editing, what cannot change, and what evidence proves the task is complete.
Good fit for
- Implementing a bounded feature in an existing repository
- Fixing a production bug without broad refactors
- Preparing a release-ready change with tests and verification
Before you run it
- Name the user-visible outcome before implementation details.
- Require Codex to inspect existing patterns and dependencies first.
- State non-goals so the agent does not redesign unrelated code.
- Require tests, build checks, and a concise completion report.
Using this prompt generator
Is this Codex prompt generator free to use?
Yes. You can start with the example, replace it with your own request, and build a structured brief without creating an account.
Which AI tools can I use this prompt with?
The resulting brief is designed to be pasted into the AI tool you already use, including chat assistants, coding agents, research engines, image generators, and video models. Adjust the target model in Promptify when model-specific wording is useful.
What should I include for the best result?
Start with the outcome you want, then include relevant context, hard constraints, and what a finished result must contain.
Related starting points
Every example opens the same Promptify builder with a different starting point.
Bring your real task.
Promptify is free to try and does not require an account.