Features
Everything you need to master your APIs
A complete toolkit for designing, testing, and shipping APIs — thoughtfully built for individual developers and collaborative teams alike.
Download NowAI-written documentation
Let AI draft the documentation for your collections, folders, and requests by analyzing methods, URLs, params, and payloads — with an optional one-line context from you. Bring your own model: run fully offline with local providers like Ollama or llama.cpp (no API key needed), or connect OpenAI, Claude, Grok, GLM, Kimi, Qwen, or DeepSeek with just a key. Keys are stored only on your device, and every draft lands in the editor for your review before anything is saved.
Rich Markdown documentation
Document collections, folders, and individual requests with a complete Markdown editor — headings, tables, task lists, code blocks, quotes, images and GIFs, video links, and more, all one click away in the toolbar. Every action is undoable with ⌘Z, and a live preview shows exactly what your team will see.
Powerful request builder
Build requests across every HTTP method with full control over query params, path params, headers, and auth. Switch body types instantly — form data, url-encoded, or raw JSON/XML/HTML/text with live syntax highlighting and validation.
Collections & folders
Group related endpoints into collections and folders that mirror your API structure. Reorder with drag-and-drop, add descriptions, and keep everything in sync across your workspace so your team always has the latest source of truth.
Environments & variables
Define environment variables once and reference them anywhere with {{variable}} syntax. Instantly switch contexts between local, staging, and production without editing a single request — secrets stay scoped to the right environment. Set a variable before any environment exists and APISetu creates a Default environment for you, stores the value, and activates it automatically.
Team collaboration
Invite teammates into shared workspaces, assign roles, and collaborate on the same collections in real time. Everyone stays aligned with a single, versioned source of truth — no more emailing JSON files around.
Mock servers
Turn any collection into a live mock server so front-end and back-end teams can build in parallel. Return realistic example responses before the real API is ready and keep development unblocked.
Automated test runs
Attach test scripts to any request, chain requests together with pre-request and post-response scripts, and run entire collections to validate your API end to end. Catch regressions before they reach production.
History & sync
Your full request history is captured automatically and synced to the cloud. Jump back to any previous call, replay it, and pick up exactly where you left off from any device.
Universal search
A single command palette — one ⌘K away — searches across every workspace and collection you have access to. Pick a result and APISetu navigates the sidebar straight to it: collections expand, folder chains unfold, and the request is highlighted and scrolled into view. Results respect your access permissions.
cURL import & snippets
Paste a cURL command into the URL bar and APISetu turns it into a fully structured request — method, headers, params, and body parsed automatically. Going the other way, generate ready-to-run code snippets from any request for cURL, fetch, and more, so sharing and scripting never slows you down.
Secure by design
APISetu keeps your data safe with token-based authentication, short-lived access tokens with silent refresh, session management, and strict access controls — private data stays private, always.
See it for yourself
Sign up in seconds and send your first request. No installs, no credit card.