Butter Cloud
Spec-first development for AI agents

Write better specs.
Get better code.

Butter Cloud compiles your intent into structured prompts that any AI agent can follow the first time. Fewer hallucinations, fewer wasted tokens, higher first-pass accuracy.

See how it works
  • Compiled to structured prompts
  • Works with any AI agent
  • Every change versioned
order.butter spec 
app OrderProcessor
  description "Handles retail checkout"
  version "1.0.0"

feature ProcessPayment
  description "Processes payment transactions"
  version "1.0.0"

  params
    order_id string
    amount double
    payment_method enum["credit_card", "crypto", "bank_transfer"]

  actions
    "Validate routing balance metrics"
    "Flag transaction for manual risk review"
Live preview · compiled to structured prompt
Why it works

The problem isn't the AI — it's the instruction.

Vague prompts make agents guess, drift, and burn tokens. Butter Cloud compiles your intent into structured instructions agents can follow the first time.

Without Butter Vague prompt → guesswork
  • Agents guess hidden requirements
  • Endless back-and-forth revisions
  • Tokens burned on dead ends
  • Output still needs manual rework
With Butter Structured spec → first pass
  • Typed params and sequential actions
  • Compiled into a structured prompt
  • Deterministic, auditable behaviour
  • Fewer tokens, less rework
Butter Cloud

Write better specs.
Get better code.

01 Write

Describe features, typed params, and sequential actions in clean syntax.

02 Compile

The CLI compiles your spec into a structured prompt in seconds.

03 Ship

Feed it to any AI agent and get code that matches intent on the first pass.

Everything you need

Features

From first spec to shipped code — a workspace built around intent, not boilerplate.

Intent over data Features, typed params, and sequential actions — not a data schema.
Spec
Visual editor Write and preview specs in real time with syntax highlighting and linting.
Editor
Team collaboration Share specs and organise projects with granular permissions.
Teams
Clean syntax More explicit than YAML, less verbose than JSON. Human-readable by design.
Butter
Usage analytics Track cost, models, and activity across your projects and bots.
Insights
Assistant bots Enable AI assistant bots that review specs and propose changes as collaborators.
Bots