Practical Review
Identify unclear tasks, missing output requirements, repeated instructions, conflicting length constraints, and sensitive-looking values.
Prompt Composer: Review, Format, and Reuse Prompts Where You Write.
Add a lightweight prompt toolbar to compatible web editors, review practical issues before sending, preview structured formats, and reuse variable-aware snippets without leaving the current workflow.
Prompt Composer
Local Product
- Reviews unclear tasks, missing output requirements, repetition, conflicts, and sensitive-looking values
- Previews plain text, Markdown, JSON, and YAML before applying a change
- Manages reusable, searchable, and variable-aware snippets in the Chrome Side Panel
Cost Structure
Free Product. Optional Implementation Support.
Optional Setup
From $2,400
Product Licence
$0
Direct Running Costs
None
Ongoing Brownsmith Work
Optional
Modules
Prompt Composer Modules
Prompt Composer combines prompt review, safe formatting, reusable instructions, editor-aware insertion, and configurable website access in one Chrome extension.
Practical Prompt Review
Plain Text, Markdown, JSON, and YAML Formatting
Reusable Snippet Library
Variable-Aware Snippets
Editor-Specific Adapters
Website Access Controls
Business Case
Improve Prompts Without Breaking the Writing Flow.
Prompt quality often drops when instructions are rushed, repeated, contradictory, or scattered across documents and saved messages.
Prompt Composer adds review, formatting, and reuse tools beside supported text areas and content-editable fields so users can improve the current prompt without moving it into a separate application.
Actionable Findings
Expand each finding to see a possible solution before deciding whether the prompt needs to change.
Reusable Instructions
Keep frequently used review, research, rewriting, summary, and coding instructions available inside the browser.
- Works beside compatible textarea and contenteditable implementations
- Keeps review and formatting inside the user's existing editor workflow
- Does not apply a formatted replacement until the user reviews the preview
Workflow Fit
Move From Draft to Reviewed Prompt in Place.
The extension supports the full prompt workflow without taking over the underlying editor.
Users can review the current prompt, inspect suggested fixes, preview a structured format, insert a reusable snippet, and undo the most recent replacement while the page remains active.
Review and Resolve
Run practical checks, open individual findings, and use the suggested direction to refine the prompt.
Format With Preview
Convert the current prompt to plain text, Markdown, JSON, or YAML and inspect the result before insertion or replacement.
Insert Snippets
Search enabled snippets and populate variables from selected text, the current prompt, page title, page URL, or date.
- Snippets can be created, searched, edited, duplicated, enabled, disabled, and deleted
- The Chrome Side Panel keeps snippet management separate from the editor toolbar
- The most recent replacement can be undone while the current page stays active
Implementation Plan
Support Purpose-Built Editors and Compatible Web Fields.
Prompt Composer combines editor-specific adapters with a generic compatibility path.
Optimized adapters support ChatGPT, Claude, Gemini, and Perplexity, while generic textarea and contenteditable handling extends the workflow to other compatible sites.
Optimized Editors
Use editor-specific behavior for ChatGPT, Claude, Gemini, and Perplexity where their interfaces need targeted handling.
Curated Allowlist
Enable popular AI tools by default, including Meshy, Sarvam, Grok, Copilot, Poe, DeepSeek, Mistral, and Meta AI.
Configurable Access
Add or remove individual hostnames, or explicitly enable the extension across all websites when broader support is required.
- Built on Chrome Manifest V3
- Uses isolated Shadow DOM interface components
- Stores configuration and snippets through versioned browser storage
Control Model
Keep Every Text Change Visible and Reversible.
Prompt assistance should not silently overwrite what the user has written.
Prompt Composer previews changes, verifies text replacement, isolates its interface from host-page styling, and keeps the latest replacement available for undo during the active page session.
Preview Before Apply
Show the formatted output before inserting it into or replacing text in the supported editor.
Verified Replacement
Use editor-aware replacement checks instead of assuming that every text field behaves the same way.
Sensitive-Value Review
Flag values that look sensitive so the user can inspect them before submitting the prompt to a website.
- The extension interface is isolated through Shadow DOM
- Website access remains configurable by hostname or explicit all-sites enablement
- Review findings remain suggestions that the user chooses whether to act on
Extension Privacy
Privacy, Kept Local.
Prompt Composer does not collect or transmit user data. Settings, snippets, and website preferences stay in the browser's local storage.
Product perspective
Read More About the Product
Explore how Prompt Composer uses human-first automation to reduce repetitive work, preserve context, and give people more capacity for judgement.