APspy is a web-based API client and mock server — REST, GraphQL, encrypted environments, team workspaces, and instant mock endpoints on your own subdomain. No downloads. No setup.
Every feature was designed around the workflows developers and teams actually use — not a feature checklist.
Switch between REST and GraphQL protocols with a single click. Build queries with the inline Schema Explorer and run introspection against any endpoint.
Deploy simulated REST endpoints to your own subdomain on apspy.rest in seconds. Echo mode, custom JSON responses, dynamic templates, input validation, and per-request logs — no external service required.
Full CodeMirror 6 editor for request bodies and GraphQL queries — with syntax highlighting, JSON formatting, and a toggle between pretty and raw views.
Organise your requests into nested collections. Rename, reorder, or delete via right-click context menus. Autosave keeps everything in sync.
Create shared team workspaces with role-based access. Invite colleagues by email, assign roles, and manage permissions — all from the UI.
Group multiple teams under a single organisation. Domain verification, privacy controls, invitation workflows, and team membership — enterprise-ready from day one.
Every request you send is captured and grouped by date. Jump back to any past call, inspect its response, and replay it with one click.
Hit ⌘K to instantly search across all collections and requests. Navigate to any saved request without leaving the keyboard.
View response status, latency, and payload size at a glance. Drill into headers or body with pretty-printed JSON — syntax-highlighted and searchable.
No download, no setup, no config files. Just sign in and start hitting APIs.
Use your existing Microsoft account. No new password to remember — SSO handles everything.
Start with a personal workspace for solo work, or create a team workspace and invite your colleagues.
Compose REST or GraphQL requests, inspect responses with syntax highlighting, and save to collections.
Head to API Mocking, create a mock endpoint, and hit it from anywhere using your personal subdomain on apspy.rest.
APspy is free to use today — no seat limits, no feature gates, and no trial periods. Every capability you see on this page is available to you right now, just sign in.
Sign in with your Microsoft account and have your first request sent in under 60 seconds.