Your AI is only as good
as your prompt.
Structure beats a better model. Decompose any prompt into blocks, edit them visually, and recompile as Claude-optimized XML.
Free, open-source, no account needed.
Browser Extension
Build prompts without
leaving the chat.
Install once, click the button in ChatGPT, Claude, or Gemini, and the builder opens in your chat.
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Adds a button to your toolbar in ChatGPT, Claude, and Gemini.
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Chat input flows to flompt. Edit blocks and inject them back with one click.
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Resizable sidebar, stays hidden when not needed.
Claude Code integration
Use flompt inside your agent.
flompt ships a native MCP server (Model Context Protocol). Add it once to Claude Code and decompose_prompt, compile_prompt and list_block_types become tools your agent can call directly.
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decompose_prompt Breaks any prompt into typed blocks. Ready to edit.
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compile_prompt Turns blocks into Claude-optimized XML. Ready to use.
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list_block_types Lists all 16 block types and ordering.
claude mcp add --transport http --scope user \ flompt https://flompt.dev/mcp/
{ "mcpServers": { "flompt": { "type": "http", "url": "https://flompt.dev/mcp/" } } }
Make.com integration
Send your prompt to any workflow.
Assemble your prompt in flompt, then send it straight to a Make.com scenario with one click. Works directly from flompt.
{
"prompt": "You are a senior…",
"format": "claude",
"blockCount": 5,
"source": "flompt",
"sentAt": "2026-03-13T…"
}
Built-in tools
Three tools built into the editor.
Prompt quality, version history, and context memory, all built into the editor.
The Audit tool scans your blocks for gaps, role missing, no examples, and tells you. Add what's missing in one click.
The Score tool rates the compiled output from 0 to 100. See what is weak and get tips to fix it.
Save your prompt at any point with a label, restore it later in one click.
Pick two versions and compare them side by side to see every line that changed: added, removed, or moved.
Store facts the AI should always know: your stack, tone, rules, constraints. Add them once and they load into every prompt you write.
How it works
Your prompt, decomposed and reassembled.
The same prompt, before and after flompt.
You are a helpful assistant. Write me a blog post about AI in healthcare. Make it engaging and professional. Around 800 words. Include statistics. Write in English.
<prompt> <role> Healthcare tech writer </role> <objective> 800-word blog post on AI in healthcare </objective> <constraints> Professional · 3+ stats </constraints> <examples> <example> <user_input>AI in finance</user_input> <ideal_response>...</ideal_response> </example> </examples> <format_instructions> Use markdown. No preamble. </format_instructions> </prompt>
Prompt anatomy
16 blocks for any prompt.
Every prompt is built from the same ingredients. flompt makes each one explicit, editable, and Claude-optimized.
<document>Template library
100+ templates. Zero blank page.
Start from a ready-made prompt template for any use case. One click loads it into your canvas, blocks pre-filled, ready to edit and compile.
Code (10 templates)
Code Review, Unit Test Writer, Debug Assistant, README Generator, SQL Query, Regex Generator, API Docs, Architecture Review and more. Paste your code, get structured feedback.
Writing (10 templates)
Blog Post, Cover Letter, Press Release, LinkedIn Post, Essay Introduction, Professional Email, Story Outline and more. Structured writing prompts for every format.
Marketing (10 templates)
Landing Page Copy, Ad Copy, Email Sequence, Brand Positioning, Case Study, Newsletter, SEO Meta Tags and more. Conversion-focused prompts for every channel.
7 more categories
Productivity, Design, Education, Sales, Data, Creative and Personal: OKRs, UX audits, lesson plans, sales pitches, data stories, character profiles and more.