microsoft/prompty

Health v2 · maintenance only

Adoption not part of the score

1252 stars · 126 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Prompty is a markdown-based file format (.prompty) for authoring LLM prompts with YAML frontmatter for model config, inputs, tools, and templates. It ships runtimes for Python, TypeScript, and Rust plus a VS Code extension to execute, trace, and debug prompts across providers like OpenAI, Anthropic, and Microsoft Foundry.

Use cases

• manage llm prompts as versioned files
• run a prompt from python or typescript without rewriting it
• debug and trace llm prompt executions
• evaluate and iterate on prompt templates
• switch llm providers without changing prompt files
• author prompts in vs code with syntax highlighting
• render jinja2 or mustache prompt templates

When to choose

• you want a portable, single-file prompt asset format across languages
• you need built-in tracing and observability for prompt runs
• your team authors prompts in VS Code and executes them in Python or TypeScript
• you need to swap LLM providers or endpoints without editing prompt bodies

When to avoid

• you need a full agent orchestration framework rather than prompt assets
• you require a stable, frozen API - the v2 format and tooling are in alpha and may change
• you only call LLMs with simple hardcoded strings and don't need templating or tracing

Facets

library · maturity experimental

prompt-engineering llm-inference templating tracing sdk large-language-models developer-tools artificial-intelligence python rust cross-platform editor-plugin prompt-format markdown-prompts vscode-extension llm-observability portable-prompts jinja2 mustache ai-agents nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="microsoft/prompty")