Agent platform configuration as code

Define your agent platform once.
Compile it everywhere.

One composable source for instructions, skills, agents, MCP servers, hooks, workflows, and policies. Inherit it across teams and compile native configuration for 48 AI coding platforms.

Get started See native output

npm install -g @promptscript/cli Open source · Git-native · CI-ready

project.prs source

@inherit @company/platform
@identity {
  "Checkout service"
}
@skills {
  security-review: {
    description: "Review code"
  }
}
@agents {
  reviewer: {
    skills: ["security-review"]
    mcpServers: ["issues"]
  }
}
@hooks {
  validate: {
    event: "post-tool-use"
  }
}

Claude Code CLAUDE.md

GitHub Copilot .github/agents/reviewer.md

Factory AI .factory/skills/security-review/

Cursor .cursor/rules/project.mdc

+ 44 targets

Native output for Claude Code GitHub Copilot Cursor Codex Factory AI Gemini CLI OpenCode and 41 more

One language, complete platform

More than instruction files

Model the complete operating environment for AI coding agents, then let each formatter emit the richest native representation its platform supports.

@identity

Instructions and policy

Project context, standards, restrictions, examples, and path-specific rules.

@skills

Portable skills

Reusable capabilities with resources, scripts, dependencies, and typed contracts.

@agents

Specialized agents

Roles, models, tool policies, skills, permissions, and MCP access.

@mcpServers

Tools and integrations

MCP servers and reusable plugins defined once at project level.

@hooks

Automation

Lifecycle hooks, repeatable workflows, and scoped monorepo builds.

policies

Governance

Inheritance boundaries, protected properties, registry controls, and CI validation.

Prompts as code

Inherit, compose, and extend

Configuration is composable source, not copied text. Inherit a shared base, mix in reusable fragments, and override only what changes - with deterministic, reviewable merges.

project.prs source

# IS-A: inherit the organization base
@inherit @company/platform

# HAS-A: compose reusable fragments
@use @core/security
@use @fragments/testing

# override only what changes
@extend standards.code {
  framework: "react"
}

@extend restrictions {
  - "Use functional components only"
}

@inherit

Inherit a base

Single-parent "IS-A" chains from organization to team to project. Blocks merge with predictable rules.

@use

Compose fragments

Mix in multiple "HAS-A" capabilities like security or testing. Later imports win on conflicts.

@extend

Extend and override

Patch specific paths, append or negate references, and seal properties that layers cannot change.

A deterministic toolchain

From intent to native files

PromptScript brings compiler guarantees to agent configuration without hiding platform-specific capabilities.

01

Define

Compose organization, team, and project configuration from versioned .prs sources.

@inherit @company/platform

02

Validate

Catch syntax, broken references, policy violations, and unsafe referenced content before deployment.

prs validate --strict

03

Compile

Generate deterministic, reviewable files that every selected agent platform understands natively.

prs compile

Native, not lowest common denominator

Every platform gets the files it expects

PromptScript preserves one source model while formatters map supported capabilities to native instructions, agents, skills, commands, hooks, and integrations.