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AI Prompt Generator

Describe the AI assistant or system prompt you need. AI Game Builder generates a production-grade instructions + knowledge pack from it, using the same methodology behind our own stacks. Runs on your own Anthropic API key — you only pay for the engineering, not per-run fees to us.

Simple €9.00 One focused instructions.md — a single-purpose prompt (e.g. a support-reply assistant, a data extractor).
Standard €29.00 instructions.md + a knowledge.md reference file — a multi-step assistant with defined rules and examples.
Advanced €79.00 A phased operating protocol (like PromptForge's own stacks) — planning phase, ordered steps, quality bar.
Expert €199.00 Full multi-agent / multi-mode system: phased protocol + large knowledge base + edge-case handling.
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How it works

  1. Describe the assistant or system prompt you need — purpose, tone, constraints, examples
  2. Pick a complexity tier and generate a free opening-excerpt preview before paying
  3. Pay once, get the full instructions + knowledge pack, unlimited use afterwards
  4. Use it in Claude Projects, the API, or any AI coding tool you like

FAQ

Do I need my own API key?
Yes — generation runs on your own Anthropic API key, added once in your account settings. You pay us for the engineering; the model usage itself is billed directly by Anthropic at their standard rates.
What do I actually receive?
An instructions file (system prompt / operating protocol) and a knowledge file (reference material), the same pairing that powers every stack in AI Game Builder.
Can I see something before paying?
Yes — a free opening excerpt is generated so you can judge the direction and quality first.
How is the price decided?
By complexity tier, shown above — not a flat fee regardless of how much work the brief actually needs.
Looking for a ready-made pack instead? Browse the Prompt Library →

AI Game Builder is an independent product and is not affiliated with, endorsed by, or sponsored by Anthropic.