ai-agent
Prompty
Prompty makes it easy to create, manage, debug, and evaluate LLM prompts for your AI applications. Prompty is an asset class and format for LLM prompts
1,262 stars127 forksRustUpdated 9/7/2026100% free · open source
What it does
Prompty lets you write, version‑control, debug, and evaluate LLM prompts as portable, observable assets.
When to use it
- •You need a single source‑of‑truth file for a prompt that multiple services share.
- •You want to unit‑test or benchmark prompts before shipping to production.
- •Your team collaborates on prompt engineering and needs versioning and change logs.
Ready-to-paste prompt
```yaml
# greeting.prompty
name: Greeting
model: gpt-4o
template: |
You are a friendly assistant.
{{user_message}}
variables:
- name: user_message
type: string
description: Message from the user
```Heads up: Prompty calls the LLM via the OpenAI API – you must set the `OPENAI_API_KEY` environment variable (or configure another provider) before running any `prompty run/evaluate` commands.
Saves to your device
Use with Claude
New
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
✅ Light setup
Installs with a command or two; your AI agent can do it for you.
Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/prompty && curl -fsSL https://workflowstacks.com/api/skills/prompty/claude-skill -o ~/.claude/skills/prompty/SKILL.mdOpen in another AI app
Opens the app with this repo with the prompt ready to go — no copy-paste needed.
Use with Claude
New
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
✅ Light setup
Installs with a command or two; your AI agent can do it for you.
Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/prompty && curl -fsSL https://workflowstacks.com/api/skills/prompty/claude-skill -o ~/.claude/skills/prompty/SKILL.mdOpen in another AI app
Opens the app with this repo with the prompt ready to go — no copy-paste needed.
Details
Creator
microsoft
Language
Rust
Category
ai-agent
Published
4/22/2024
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