{"slug": "i-built-20000-utility-apis-for-developers-and-ai-agents", "title": "I Built 20,000 Utility APIs for Developers and AI Agents", "summary": "A developer built Koyori Utils API, a collection of 20,000 utility API endpoints for developers, automation workflows, and AI agents covering tasks like text processing, data formatting, JSON handling, and calculations. The service runs on Cloudflare Workers, exposes machine-readable OpenAPI documentation for endpoint discovery, and accepts payment in STX (Stacks) and USDC. The developer says the project is still evolving and is seeking feedback on which utilities developers find most valuable.", "body_md": "Building applications and AI agents often involves small but repetitive tasks: processing text, formatting data, working with JSON, and performing calculations.\n\nI wanted to make these utilities easier to access through a single API service, so I built **Koyori Utils API**.\n\nKoyori Utils API is a collection of **20,000 utility API endpoints** designed for developers, automation workflows, and AI agents.\n\nThe service includes utilities for:\n\nThe API service runs on **Cloudflare Workers** and provides machine-readable **OpenAPI documentation** to help developers discover and integrate endpoints.\n\nIt also offers payment options using **STX (Stacks)** and **USDC**.\n\nMy goal is to create a practical collection of reusable utilities that developers and AI agents can integrate into their workflows without rebuilding common functions from scratch.\n\nThe project is still evolving, and I'm interested in learning which utilities developers find most valuable.\n\n**Website:** [https://koyori-utils-api.koyori-aibtc.workers.dev/](https://koyori-utils-api.koyori-aibtc.workers.dev/)\n\nI'd love to hear your feedback!\n\nWhat kinds of utility APIs would be most useful in your projects?\n\nThanks for reading!", "url": "https://wpnews.pro/news/i-built-20000-utility-apis-for-developers-and-ai-agents", "canonical_source": "https://dev.to/koyori-utils/i-built-20000-utility-apis-for-developers-and-ai-agents-40h5", "published_at": "2026-11-06 22:40:45+00:00", "updated_at": "2026-11-06 22:52:15.383267+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "ai-agents", "ai-products"], "entities": ["Koyori Utils API", "Cloudflare Workers", "Stacks", "USDC"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/i-built-20000-utility-apis-for-developers-and-ai-agents", "markdown": "https://wpnews.pro/news/i-built-20000-utility-apis-for-developers-and-ai-agents.md", "text": "https://wpnews.pro/news/i-built-20000-utility-apis-for-developers-and-ai-agents.txt", "jsonld": "https://wpnews.pro/news/i-built-20000-utility-apis-for-developers-and-ai-agents.jsonld"}}