PromptForge

What it does

Stop hardcoding LLM prompts. PromptForge lets you write templates with {{variable}} syntax, version every edit automatically, and fetch prompts via REST API. No SDK needed. Pin to a specific version for production stability or always fetch the latest. Works with any LLM: OpenAI, Anthropic, Gemini, Llama, Mistral, and more. Plans from $9/mo. Every plan includes a 14-day free trial.

PromptForge is prompt management for production AI. Version control, dynamic templates, and a REST API — update LLM prompts without redeploying your app.

Stop hardcoding system strings. Manage, version control, and serve your prompt templates via an instant REST API. Zero SDK footprint. Works with Vercel AI SDK, OpenAI, Grok, and Claude. // Example API Route fetching a production-pinned template const response = await fetch ( "https://api.promptforge-app.com/v1/prompts/user-welcome" , { headers: { "Authorization" : `Bearer ${ process . env . PROMPTFORGE_API_KEY }` } }); const { template } = await response. json (); Works with any LLM Watch how PromptForge lets you update, version, and ship AI prompt improvements without touching your codebase. PromptForge makes AI prompt management simple. Create, version, and serve your LLM prompts without…from promptforge-app.com

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  PromptForge2025 · github.com · ▲474

  PromptForge: Open-source AI prompt engineering workbench with systematic evaluation I built PromptForge after getting frustrated with the manual trial-and-error approach to prompt engineering. Most tools are just text editors, but I wanted something that brings software engineering discipline to prompt development. Key technical features: - AI-assisted prompt generation (stop starting from scratch) - Systematic evaluation engine that auto-generates test suites - Multi-model support (Claude, GPT-4, Azure OpenAI) - Go backend with SQLite for performance and simplicity - One-line Docker…

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  Prompt Engine – Auto pick LLMs based on your prompts2024 · jigsawstack.com · ▲93

  Nowadays, a common AI tech stack has hundreds of different prompts running across different LLMs. Three key problems: - Choices, picking from 100s of LLMs the best LLM for that 1 prompt is gonna be challenging, you're probably not picking the most optimized LLM for a prompt you wrote. - Scaling/Upgrading, similar to choices but you want to keep consistency of your output even when models depreciate or configurations change. - Prompt management is scary, if something works, you'll never want to touch it but you should be able to without fear of everything breaking. So we launched Prompt…

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  PromptVaultJun 2026 · promptvlt.com · ▲12

  Ship prompt changes without touching your codebase

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  Promptly – Prompt Management Platform for LLM Apps2023 · trypromptly.com · ▲15

  We are excited to show Promptly (https://trypromptly.com), a prompt management platform for LLM apps that makes it easy to experiment, share and manage prompts in production. With Promptly, users can: - Try out different prompts and model parameters for various providers - Quickly share prompt snippets together with parameters and generated output. Think of it as CodePen or JSFiddle for prompts - Create high level endpoints on top of provider APIs (Open AI, DreamStudio etc) with templated and versioned prompts - Use built-in caching for endpoints that will help save on Open AI…

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  Prompt Builder – Free TemplatesAug 2026 · promptbuilder.space · ▲21

  Hi HN, I built Prompt Builder (https://www.promptbuilder.space/) because I was frustrated managing complex AI prompts in plain text boxes. The core idea: instead of one giant textarea, you compose prompts from draggable, reorderable blocks. Each block can have its own XML/custom tags, visibility toggles (so you can A/B test sections), and duplicates. Key technical details: - Live compiled preview: the right pane shows the exact string being sent, updating as you drag/toggle blocks - Dynamic variables: define {{var_name}} once, use across blocks, change in one…

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  PromptForgeJun 2026 · promptforge-navy-psi.vercel.app · ▲4

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