API client
Test HTTP APIs — without leaving AZTools
Save requests in groups, send GET to DELETE calls with query params, headers and body, inspect responses and replay history — plus import Postman or OpenAPI collections.
Free, no credit card · Collections sync to your AZTools account
Why API client on AZTools
Debug your backend next to notes, tasks and the rest — not a separate Postman tab you pay for on its own.
Organized collections
Groups with colors, base URL and shared headers for every API inside.
Full request builder
Query, headers and body — JSON, form, binary and more.
Response you can read
Preview formatted JSON or XML, or switch to raw with status and timing.
Import what you have
Postman v2.1, OpenAPI 3.x, Insomnia v4 or AZTools export.
Groups with shared defaults
Create colored groups for staging, production or each service. Set a base URL and shared headers once — every saved API in the group inherits them. Ungrouped requests stay in an unclassified list.
- Base URL prepended to relative paths
- Group headers shown read-only on each request
- Rename, duplicate and delete groups from the sidebar
Build any HTTP request
Pick GET, POST, PUT, PATCH, DELETE or HEAD. Edit the URL, add query params and headers in key-value tables, and choose a body type — none, JSON, plain text, URL-encoded form, multipart form-data or binary.
- Tabs for query, headers and body
- Enable or disable individual param and header rows
- Save changes before send; deep links per request and tab
Inspect the response
After send, see status code with color badges, response time and size. Switch between formatted preview — JSON or XML when valid — and raw body. Large bodies are truncated safely with a clear notice.
- Preview and raw response views
- Status, duration and byte size summary
- Resizable response panel
History and replay
Every call is stored per saved API — status, timing and body snapshot included. Browse the history panel, replay a past request with one click or clear history when you want a fresh slate.
- Up to 50 entries per saved API
- Replay restores method, URL and response context
- Resizable history sidebar
Import and export collections
Bring existing work from Postman Collection v2.1, OpenAPI 3.x, Insomnia v4 or an AZTools export file. Merge into your current collection or replace it entirely. Export back to portable JSON anytime.
- Merge or replace import modes
- Detects format automatically from JSON
- Export as AZTools-compatible collection
REST API for automation
Read groups, saved APIs and preferences with getAppState. Run HTTP requests programmatically via execute — routed through a server proxy with timeout and SSRF protections (localhost and private networks blocked).
- getAppState and execute endpoints
- Execute stores history like the UI send button
- Proxy timeout configurable up to 120 seconds
Try API client free on AZTools
Send your first API call in minutes — no separate Postman subscription, no juggling another desktop app.