A chatbot with one job
A chat with a system prompt, a short history, and an answer for questions outside the job.
PT-BR + EN
The prompt that spawns your app.
Prompts you can paste into a coding agent, written in Portuguese and English, plus a tool comparator with the USD price and the BRL estimate.
What do you want to build?
Featured prompts
A short canvas game
A one-screen game, playable on a keyboard, with no engine. For a real platformer, use the Phaser prompt.
An agent rules file
Writes short rules for .cursor/rules, CLAUDE.md, or AGENTS.md, using the repo's real commands.
An agent with tools
An agent with a closed tool list, confirmation before a side effect, and a stop condition.
How to use it
Pick the task
Filter by deliverable, tool, and level.
Fill the variables
Anything in brackets is yours. The rest is the instruction.
Check the source
Prices carry a date. An untested prompt says so.
Compare tools
Twelve tools, prices checked on the official page, with a date and a source link.
Frequently asked questions
What is SpawnPrompt?
A static library of vibe-coding prompts and a comparator of AI coding tools. The gap it fills is Brazilian Portuguese. English is a first-class locale, not a translation dumped at the bottom.
Have the prompts been tested?
Not yet. Each page marks testing as “not yet tested”. We do not publish a tool, model, or date for a run that did not happen. The screenshot slot stays empty until there is a result.
Where do the prices come from?
From each product’s official pricing page, with the URL and the date checked. If a number was not clear, the cell says “to be confirmed”. BRL is the PTAX sell rate plus IOF, from one config value.
Are the links affiliate links?
The field exists and is empty. Links currently go to the official site. If an affiliate URL is filled in later, the disclosure page covers it.