Superfunctions – AI prompt templates as an API
Hi HN, https://superfunctions.com I'm working on a web app that allows Ai prompts to function as an API. I want to make it easier for developers to use Ai. I've found it painful to monitor, cache, and iterate on prompts. superfunctions.com is designed to be the simplest building block to create Ai powered apps and scripts. Simplest example I can think of: You want an api to convert human-named colors to hex You can write a prompt like: "convert {{query.color}} to color, only output hex for css" and then you can call your prompt with…
Superfunctions – AI prompt templates as an API launched on August 20, 2023 with 42 votes, #1,482 of 4,347 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Superfunctions is a web platform that turns AI prompts into callable APIs, designed for developers building AI-powered applications. Users write prompts with variable placeholders and instantly access them via HTTP endpoints, eliminating the need to manage prompt monitoring, caching, and iteration separately. The service simplifies AI integration by treating prompts as reusable building blocks that can be deployed and called like traditional APIs.
written from the facts on this page · September 2026
From the sources
Easily integrate ai into your apps/scripts/websites. You write a prompt and we serve it up from our api with caching, retries, monitoring. With our easy to use prompt template syntax you can easily leverage Ai for any task you see fit
Create api routes that are backed by Ai prompts. For example: you want an api to get capital cities from a country name. The api could look like this: Now you have your api: superfn.com/me/capital?county=Switzerland Create prompts with template variables that are mapped to API input. Running your prompts is as simple as an api call. We can even help by autogenerating the client API code Secure your app by avoiding exposing your API Keys to hackers in your app/webpage. We support key rotation and monitoring or optionally BYOK (bring your own key). Avoid long waits and high costs by turning on caching. We can store the output of your AI-runs, when we receive a similar AI-run we skip the hard…from superfunctions.versoly.page
In the maker’s words, at launch
Hi HN, https://superfunctions.com I'm working on a web app that allows Ai prompts to function as an API. I want to make it easier for developers to use Ai. I've found it painful to monitor, cache, and iterate on prompts. superfunctions.com is designed to be the simplest building block to create Ai powered…
Does a similar job
all alternatives →
Superdesign Prompt LibraryJan 2026 · superdesign.dev · ▲362The 1st Open-source design agent that lives directly inside Cursor, Windsurf, or your favorite IDE. V0.005 is an extension with custom Paralle Claude Code agents and infinite canva UX that allows you to iterate design directly in your IDE. It can: - Generate lots of designs in Paralle (Product Mocks / UI components / Wireframes) - Fork and iterate specific designs - Deeply integrate into your IDE workflow We think design might be the killer use case for Paralle agents, and we thought the best way is to build and validate—so here we are! The V0.005 only generates static HTML pages…
Pretty Prompt2025 · pretty-prompt.com · ▲492Grammarly for prompting. Turn any text into perfect prompts.
ChatGPT Super Prompt Generator2024 · flexos.work · ▲127Tired of writing prompts? Generate Super Prompts in seconds
More ai this month
the category →
Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art
PixVerse R2▲381A real-time world model you can explore and change
AI · 28d ago · world.pixverse.video
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, August 2023
the whole month →
Resend▲1,325An entire collection of pre-built components with a much faster development experience.
Dev tools · 2023 · resend.com
Lottielab▲869Create and ship lottie animations to sites and apps faster
Dev tools · 2023 · lottielab.com
Outlines is a Python library that focuses on text generation with large language models. Brandon and I are not LLM experts and started the project a few months ago because we wanted to understand better how the generation process works. Our original background is probabilistic, relational and symbolic programming. Recently we came up with a fast way to generate text that matches a regex (https://blog.normalcomputing.ai/posts/2023-07-27-regex-guide...). The basic idea is simple: regular expressions have an equivalent Deterministic-Finite Automaton (DFA) representation. We…
AI · 2023 · github.com