№ 01 — A workspace for prompt work
Prompt Expert is a structured workspace for drafting, optimizing, testing, and organizing prompts — without the usual copy-paste chaos. Built like a notebook, not a chat.
Core workflows
Build, test, refine — one place.
Free credits
Enough to validate real iterations.
Prompt refinement
Clearer language, same structure.
№ 02 — The workspace
Composer
Model
GPT-5.4 Mini
Category
Code review
Tone
Technical
Format
Markdown
Task
Review the pull request for bugs, regressions, and missing tests.
Add sharper constraints, choose a stronger output format, keep the prompt reusable for future code reviews.
Preview
Role You are a senior software engineer performing a production-focused code review. Task Review the pull request for correctness, security, performance, and maintainability. Output format - Severity-ranked findings - Concrete fixes with examples - Residual risks or missing tests
Quality
92%
Clear role, scoped task, useful output format.
Next refinement
Add acceptance criteria for missing tests.
Better constraints improve repeatability.
№ 03 — How it actually works
Instead of jumping between notes, chat windows, and docs — shape prompts, test outputs, compare model behavior, and save the winners in one flow.
Builder defaults, templates, and guided sections start you with structure instead of a blank page.
Model step-to-step reasoning, reuse prior outputs, and test multi-stage sequences without leaving the workspace.
Save prompts, publish shareable versions, keep a growing library of proven building blocks.
№ 04 — Before / After
The goal isn’t longer prompts. It’s more precise, reusable, testable ones.
Draft
“Review this pull request and tell me what is wrong.”
Revised
Review the provided pull request for correctness, security, performance, and maintainability. Prioritize findings by severity, cite the concrete issue, and suggest fixes with code where useful.
Draft
“Help the customer with their issue politely.”
Revised
Act as a SaaS support specialist. Acknowledge the issue, summarize the likely cause, provide the next 3 actions, and close with a confirmation question. Keep the tone concise and reassuring.
№ 05 — Get started
Start free. Save your best prompts. Test the workflow against real work before you scale up.