Introduction

What is PLP?

PLP (Prompt Library Protocol) is an open standard that defines how prompt libraries store, version, and serve prompts via a REST API. Any server that implements the spec is PLP-compliant — use the same client SDK to talk to any of them.

Core Concepts

• PromptEnvelope — The standard format: id, content (text or multimodal), and meta (version, author, model_config)
• Discovery — Every server exposes /.well-known/plp declaring its capabilities
• Versioning — Semantic versions, publishing, and deploying to named environments
• Context Store — Shared assets (images, text) referenced in prompts
• Deploy — Promote versions to environments (staging, production)
• Evaluation — Run eval suites against prompts via the API

Why Use PLP?

• Vendor-neutral — No lock-in. Switch servers without changing client code
• Open standard — Defined as an OpenAPI 3.0 spec with JSON Schema validation
• Multi-tool — Same protocol for VS Code, CLI, web apps, and CI/CD
• Registry — Discover PLP servers via the public PLP Registry

Getting Started

npm install @goreal-ai/plp-client

Or implement your own server from the OpenAPI spec.