Hobby plan available, no credit card required
Stop redeploying to fix a prompt
Hardcoded LLM prompts slow you down. PromptForge lets you update, version, and serve prompts via API, so you ship prompt improvements in seconds, not deployment cycles.
Works with any LLM
From Hardcoded Prompt to Production API in 2 Minutes
Watch how PromptForge lets you update, version, and ship AI prompt improvements without touching your codebase.
From Prompt to Production in Three Steps
PromptForge makes AI prompt management simple. Create, version, and serve your LLM prompts without touching your application code.
Create Prompt Templates
Write your AI prompts with {{variable}} syntax. Build reusable templates that work with any LLM, from GPT to Claude to Llama.
Version Control Your Prompts
Every edit creates an immutable version. Promote any version to stable for production, iterate freely with latest in dev, or pin to an exact number.
Serve via REST API
Fetch any prompt with a single API call. Pass dynamic variables as query parameters and get back interpolated content.
Powerful Prompt Management Features for AI Developers
From simple prompt storage to production-ready APIs with version control, dynamic variables, rollback, and a public gallery.
Dynamic Variables
Use {{variable}} syntax to create reusable prompt templates. Pass different values via API for endless customization across any LLM.
Instant Prompt API
RESTful API endpoint ready in seconds. Fetch any prompt with version pinning and variable interpolation. No redeployment needed.
Rollback with Diff Checker
View a line-by-line diff of every change and roll back to any previous version in one click. Never lose a working prompt again.
Publish to Gallery
Share your best prompts with the community in the public gallery. Get discovered by other developers and grow your personal library.
Prompt API: One Call to Fetch Any LLM Prompt
Integrate PromptForge into any application with a single HTTP request. Pass variables as query parameters and get back interpolated content instantly. No SDK required.
- RESTful API with Bearer token auth
- Stable channel for safe production releases
- Latest channel for dev & staging iteration
- Dynamic variable interpolation
- Detailed error messages for debugging
// Fetch your prompt — defaults to the stable channel
const response = await fetch(
"https://www.promptforge-app.com/api/v1/prompts/abc123" +
"?_version=stable&role=developer&task=debug",
{
headers: {
"Authorization": "Bearer pfk_your_api_key"
}
}
);
// channel tells you which version alias resolved the request
const { content, version, channel } = await response.json();
// channel: "stable" — version: 4Publish your prompts and get discovered
One click to publish any of your prompts to the public gallery. Your prompts become discoverable, forkable, and usable by thousands of developers — turning your work into community value.
- Get discovered by thousands of developers
- Let others remix and build on your prompts
- Build your reputation as a prompt engineer
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Start for free, upgrade anytime
No credit card required to get started. Paid plans include a 14-day free trial.
- 1k API requests/month
- 1 prompt
- Unlimited versions
- Dynamic variables
- Version pinning
- API key management
No charge until your trial ends
- 10k API requests/month
- 5 prompt
- Unlimited versions
- Dynamic variables
- Version pinning
- API key management
No charge until your trial ends
- 100k API requests/month
- 25 prompt
- Unlimited versions
- Dynamic variables
- Version pinning
- API key management
No charge until your trial ends
- 500k API requests/month
- 100 prompt
- Unlimited versions
- Dynamic variables
- Version pinning
- API key management
Questions? Contact us
Frequently Asked Questions
Everything you need to know about AI prompt management with PromptForge.
What is AI prompt management?
AI prompt management is the practice of organizing, versioning, and serving prompts used with large language models (LLMs) like GPT-4, Claude, and Llama. According to a 2025 Gradient Flow survey, teams that decouple prompt logic from application code ship prompt improvements up to 3x faster. Instead of hardcoding prompts, a prompt management tool like PromptForge lets you edit, version, and deploy prompts independently, improving iteration speed and production reliability without redeploying your application.
How does prompt version control work in PromptForge?
Every time you edit a prompt in PromptForge, a new immutable version is created automatically with a sequential version number. There are three version channels: stable (the default) always serves the last version you explicitly promoted to stable, so production stays unchanged until you decide to ship; latest always serves the newest version, useful for development and staging; and pinned passes an exact number like _version=3 to lock to a specific release. When you create a prompt, version 1 is automatically set as stable. As you iterate, you can test new versions in staging using _version=latest, then promote to stable when ready. Research from Google DeepMind has shown that even minor prompt wording changes can shift LLM output quality by 10–25%, so controlling exactly which version production sees is critical.
Can I use PromptForge with any LLM?
Yes. PromptForge is fully LLM-agnostic and works with all major providers. It manages your prompt templates and serves them via a REST API. You fetch the interpolated prompt text and pass it to any model: OpenAI GPT-4o, Anthropic Claude, Google Gemini, Meta Llama, Mistral, or any other provider. As of 2025, teams commonly use 2–3 different LLM providers simultaneously, making a provider-independent prompt layer essential for flexibility.
How do I integrate PromptForge into my application?
Integration takes a single HTTP request, no SDK or library required. Call the PromptForge REST API with your prompt ID, pass dynamic variables as query parameters, and include your API key in the Authorization header. You get back fully interpolated prompt content as JSON in under 50ms on average. It works with any programming language: TypeScript, Python, Go, Rust, Java, or anything that can make an HTTP call.
What are dynamic prompt variables?
Dynamic variables let you create reusable prompt templates with placeholders using {{variable}} syntax, similar to template literals in programming. When you fetch a prompt via the API, you pass values for each variable as query parameters and PromptForge interpolates them server-side, returning the final prompt text. One template can serve unlimited use cases: for example, a single customer-support template with {{tone}}, {{product}}, and {{language}} variables can generate prompts for dozens of scenarios without duplicating content.
How much does PromptForge cost?
PromptForge offers a hobby plan and three paid plans. The hobby plan gives you 1 prompt and 1,000 API requests per month with no credit card required — it's a great way to evaluate the platform. Paid plans each include a 14-day free trial: Starter at $9/month (10,000 API requests, 5 prompts), Pro at $29/month (100,000 API requests, 25 prompts), and Business at $49/month (500,000 API requests, 100 prompts). All plans include unlimited versions, dynamic variables, version pinning, and API key management. No credit card is charged until the paid trial ends, and you can cancel anytime.