Install skills
Every skill is versioned and immutable once published. A bot pins the version it installed, so an author cannot silently change how your bot behaves.
Preview Running on a real backend
Build a bot that knows your work — and bills you honestly
Start with a prompt, add skills the community already sharpened, and watch what every message costs before you send it. Credits are metered from real token usage, not guessed.
Free tier, no card. 20 credits a month to try it properly.
Night Deskdraft
System prompt
You are Night Desk, a calm late-hours assistant. Answer briefly, and say which part you’re unsure about rather than hedging the whole answer.
Model0.3credits per message
About 1,287 messages left on your balance this cycle.
1 credit = 10,000 reference tokens0.1× for cached prompt tokens0.2× on the Swift model0 top-ups — upgrade instead
How it works
Three decisions, then it’s running
No orchestration diagrams, no YAML. Versioning, cost accounting and prompt caching are handled underneath.
Pick a model
Swift, Balanced or Deep. The multiplier is shown next to each one because it is the thing that actually changes your bill — Deep costs 25× Swift.
Read the ledger
Every charge is an append-only entry with a reason. Your balance is a sum you can check, not a number we assert.
Caching, and why it matters
Your system prompt and skills are identical on every turn, so they are sent as a cacheable block and billed at a tenth. That is the whole margin story.
Charged after, not before
Cost is computed from the usage the model provider reports, once the reply is finished. Nothing is estimated onto your bill.
Out of credits?
Upgrading applies immediately and adds the difference in allowance straight away. There are no top-ups to buy.
Start with the free tier
Twenty credits a month, no card. Enough to build a bot properly and decide whether it earns its keep.