[verdict][curated prompt][source: promptdc.com]
Can I vibecode PromptDC?
// one session, and a personal version you can actually use
A useful personal version is highly one-shot-able: an MV3 content script can capture selected text, send it to an LLM with one of two system prompts, then replace a normal editable field or copy the result. The commercial product earns its keep through Writing profiles (grammar fix, email, social post, shorten, tone), a Coding mode that auto-detects which AI tool you are prompting and tailors the rewrite, polished interaction design, and defensive handling of complex editors where naive DOM replacement can fail or corrupt text.
confidence: high
what it is: Rewrite selected text or turn vague coding requests into implementation-ready prompts from any website.
Buildability index · an editorial game
- Price 9 $/month · per seat weight: plus 1
- Time one sitting weight: plus 3
- Category ai writing no weight
- Moat execution quality weight: minus 1
- Confidence high weight: plus 1
- What you lose 5 items weight: minus 2
- Site promptdc.com (si apre in una nuova scheda) no weight
The maths works, but not by much: look at what you lose before you start.
Gioco editoriale: il verdetto dice se un agente può, l’indice se conviene.
What you build
Select text, choose Writing or Coding, call an LLM with the matching rewrite prompt, then replace the selection or copy the result.
what you need
- OpenAI or Anthropic API key
- Chrome developer mode with Load unpacked
Owner-submitted; the core BYOK workflow is reproducible, while the commercial product has materially broader compatibility and polish.
The prompt
One session with a coding agent and your version runs.
Build me a personal Chrome extension for rewriting selected text with an LLM.
Use Manifest V3, vanilla HTML, CSS, and JavaScript, with no framework, bundler, package manager, or build step.
Create manifest.json, background.js, content.js, content.css, options.html, options.js, and simple generated placeholder icons.
Request only storage, contextMenus, activeTab, and scripting permissions, plus host permissions for the chosen LLM API.
Add an options page that stores provider, API key, and model in chrome.storage.local, never chrome.storage.sync.
Support OpenAI and Anthropic through direct fetch calls from the background service worker.
Use the OpenAI Responses API or Chat Completions API and the Anthropic Messages API with correct headers and response parsing.
Never log the API key or selected text, and show clear errors for a missing key, HTTP failure, rate limit, or malformed response.
Provide exactly two modes: Writing and Coding, with the last choice saved locally.
Writing mode must offer selectable profiles: Improve, Grammar fix, Shorten, Email, Social post, and Tone, each with its own system prompt that preserves facts and meaning, matches the input language, and returns only the revised text.
Coding's system prompt must turn a vague request into an implementation-ready specification with goal, context, requirements, constraints, acceptance criteria, and likely files, while preserving user intent and returning only the enhanced prompt.
Create a context menu named Enhance selected text that works on selection and editable contexts.
Also inject a small accessible floating button beside any nonempty text selection after mouseup or keyboard selection.
The floating UI must include a compact mode selector with the Writing profiles and Coding, an Enhance button, a loading state, and a dismiss control.
Capture selections in input and textarea elements with selectionStart and selectionEnd, and capture contenteditable selections with a cloned DOM Range.
For input and textarea, replace only the captured range, preserve surrounding text and caret position, and dispatch bubbling input and change events.
For contenteditable, restore the saved Range, replace only its contents with a text node, dispatch a bubbling input event, and avoid innerHTML assignment.
If the selection is read-only, detached, stale, or cannot be safely replaced, copy the result with navigator.clipboard.writeText and show a small Copied notification.
If no selection exists in an editable field, enhance the field's full current value; otherwise show a helpful Select some text message.
Pass requests from the content script to the service worker with chrome.runtime.sendMessage so page scripts never receive the API key.
Keep the interface unobtrusive, keyboard accessible, responsive, and isolated with prefixed CSS class names and a high z-index.
Include an options-page Test API button and a concise README with Load unpacked instructions, provider setup, security caveats, and a manual test checklist.
Handle extension reloads and restricted chrome:// pages gracefully, and remove injected UI when the selection collapses or Escape is pressed.
Deliberately leave out accounts, sync, per-site profiles, billing, telemetry, analytics, history, and any backend server.
Return every file with finished code, not pseudocode or TODOs, so loading the folder as an unpacked extension works immediately. Curated prompt: written and reviewed by hand for this app. In English on purpose — it is the language coding agents work best in.
What you lose
- Writing profiles tuned for grammar fix, email replies, social posts, shortening, and tone
- Coding mode platform detection that tailors the rewrite to the AI tool you are prompting (ChatGPT, Claude, Cursor, Lovable and more)
- Reliable behavior across Gmail, LinkedIn, Google Docs, Shadow DOM, and framework-managed rich text editors
- Cloud accounts, usage credits, profile sync, and a managed billing flow
- Polished mode controls, error recovery, ongoing compatibility updates, and support
Why people still pay
People pay for confidence that rewriting works across the sites and editors they use every day, plus maintained profiles, a polished interface, account features, and fixes when web apps change. A personal BYOK clone covers the basic loop well, but keeping rich editors reliable is continuing product work.
moat: Execution quality what a moat is
Polish, site compatibility, and maintained rewrite profiles
Free alternatives
Not in the mood to build it? These already exist, they are free or open source, and we checked them one by one.
What it costs in a year
9 $/mese 108 $/anno
Listino 9 $ al mese a persona su PromptDC. L’anno è dodici mesi pieni, senza sconti annuali.
Do you agree?
The vote balance
Ancora nessun voto: il tuo è il primo.
Nessun voto ancora — il primo pesa.