SILICON VALLEY · PROMPT-ORIENTED PROGRAMMING
Turn intent into
working software.
Prompt-oriented programming, made visible.
PixieFlow is an open project for expressing business behavior as YAML Blueprints, executing it through an LLM runtime, and verifying outcomes.

01THE IDEA
From “writing prompts”
to “building with prompts.”
Prompt-oriented programming makes a prompt a versioned Blueprint: a readable declaration of roles, rules, examples, and the output a workflow must produce.
PixieFlow connects those Blueprints to runtime execution, structured validation, human review, and extension points in one visible flow.
Declare the flow. Validate the result. Improve with evidence.
02HOW IT FLOWS
Not finished
in a single generation.
Describe the work, declare it as a Blueprint, execute it, validate the result, and refine the flow. PixieFlow keeps that cycle readable.
- 01
Intent
Describe the outcome, rules, and constraints
- 02
Blueprint
Declare roles, examples, and an output schema in YAML
- 03
Execution
Run the Blueprint with models, tools, and plugins
- 04
Verification
Validate structured output, review, and refine
03PRINCIPLES
Principles
for the flow.
Not only convenience, but comprehensibility. Not only speed, but room to evolve. Four principles guide every design decision.
Start with intent
Clarify what you want to accomplish before the details of implementation. A prompt is the first structure that preserves that intent.
Compose in the open
Keep roles, rules, examples, and output schemas together in Blueprints that people can read, version, and review.
Make results checkable
Use structured output, self-evaluation, and human confirmation where it matters. A flow is dependable when its outcome can be inspected.
Evolve without starting over
Version Blueprints, adjust policies, and add capabilities through plugins. Change should accumulate without rewriting the runtime.
04ECOSYSTEM
PixieFlow
shows the whole.
PixieCore
powers the core.
PixieCore is a small, explicit core for prompt-oriented programming, defining its foundational abstractions, execution model, and extension boundaries.
Explore PixieCore05BUILDING IN THE OPEN
It’s only the beginning.
Rather than presenting it as finished, we are building carefully from the ideas and boundaries outward. The project is currently in its early design phase.
Concept & design
Define the vocabulary, principles, and contours of the core model.
Repository & spec
Prepare the public repository and the first specification.
Tools & community
Grow a place for extensions, practice, and participation.
06FROM INTENT TO IMPLEMENTATION