# AI prompt generator: run it free, or from your agent

A structured prompt with role, context, task, constraints and output format from a one-sentence goal.

## Prompt

Use looot to write a prompt for this job: [goal]. 1. Set up https://looot.ai/skill.md. 2. Search the catalog for a chat completion endpoint and check its price. 3. Run it with a system prompt that asks for Role, Context, Task, Constraints and Output format sections, [placeholders] for missing facts, under 200 words. 4. Return the prompt and test it once on a sample input.

## What it needs

A goal up to 300 characters, plus optional role, audience, format and tone

## What comes back

- role section
- context section
- task section
- constraints section
- output format section

## Endpoints and providers

- openrouter: openrouter-chat

## What it costs

The tool on the web page runs live at no cost to you and is limited per hour. The results come from public data through looot. For heavier or repeated use, run the same job from your own looot account: looot bills per call and charges nothing while your agent is idle. The live price comes from the catalog and shows on the web page.

## Start from a sentence

Turn a vague request into a prompt with a clear task and output format.

## System prompts

Draft the system prompt for an agent or a support bot, then edit it.

## Structured output

Ask for a table or JSON in the output format section so the answer is easy to parse.

## Teach the pattern

Show a team what a complete prompt has in it, section by section.

## What does the AI prompt generator return?

One prompt with five sections: Role, Context, Task, Constraints and Output format. Facts it cannot know are left as [placeholders] for you to fill in.

## Which model writes the prompt?

Google's Gemma 4 31B instruct, through the OpenRouter chat endpoint on looot, with a fixed system prompt. The prompt it writes works with any chat model.

## How long can the goal be?

300 characters for the goal and 100 for each optional field. The answer is capped at 250 tokens, so the prompt stays short. A very wide goal may come back cut, and the page says so.

## What makes a good prompt?

A clear task, the context the model needs, limits on length and scope, and the exact output format. The generator fills those sections so you can see what is missing.

## Is it free?

Yes on this page, limited per hour. Each run is one real call on looot's own key, billed per output token. The price for your own account is shown above.

## How do I run this from an agent with looot?

Copy the prompt above into your agent. It sets up looot from skill.md, finds the chat completion endpoint, writes the prompt and tests it on a sample.

## Is my text stored?

The goal goes to the model provider for this one call. Do not paste personal or confidential data.

## Related tools

- /free-tools/llm-tool-schema-generator
- /free-tools/token-counter
- /free-tools/ai-humanizer
- /free-tools/agents-md-generator

## Last reviewed

2026-10-14. The price per call is read live from the catalog on the web page.

## Agent skill for this page

https://looot.ai/free-tools/ai-prompt-generator/skill.md sets an agent up for exactly the jobs on this page, with the live price of each, and offers the page's starter task once the user has picked a job and seen the price. The line to give an agent is under "Give this to your agent" below.

## For agents

### Give this to your agent

```text
set up looot for AI prompt generator - https://looot.ai/free-tools/ai-prompt-generator/skill.md
```