Free API Testing Tool — No Login Required
The Fastest Way to Test Any API.
No Login, No Bloat.
Pingllo is the browser-based API client built for speed. Send HTTP requests, inspect responses, generate code, and create AI-powered docs — all without signing up.
No credit card · No signup · Works in any browser
No saved requests yet.
Click "Save" to save a request.
Enter a URL and press Send
Response will appear here ⌘↵
Everything you need to test APIs
A full-featured API client in your browser — no installation, no account required.
Zero Signup, Instant Start
Open the tool and start testing immediately. No account, no email, no waiting.
REST & GraphQL Support
Send GET, POST, PUT, PATCH, DELETE requests and query GraphQL endpoints with variables.
Collections & Environments
Organize requests into collections and switch between Dev/Prod environments with variable substitution.
AI-Powered Docs & Explain
Generate API documentation in one click and get plain-English explanations of any request — powered by Claude or OpenAI.
Code Snippet Generation
Auto-generate ready-to-use cURL, JavaScript Fetch, and Axios code from any request.
Postman Compatible
Import your existing Postman v2.1 collections and keep your workflow intact.
Deep Response Analysis
Inspect response body, headers, status codes, timing, size, and compare diffs between runs.
Shareable Request Links
Generate a shareable link for any request — let teammates or clients reproduce it instantly, no account needed.
How it works
Test your first API in under 30 seconds.
Enter Your Endpoint
Paste any API URL. Choose your HTTP method — GET, POST, PUT, PATCH, or DELETE.
Configure the Request
Add headers, query params, auth tokens, and a request body in JSON, form data, or raw text.
Send & Analyze
Hit Send. Inspect the response body, headers, status code, and timing in real time.
AI-powered features built in
Pingllo integrates Claude and OpenAI to go beyond basic API testing.
Generate API Docs
Select a collection and get a full Markdown API reference generated in seconds. Export or copy with one click.
Explain Any Request
Paste a URL and get a plain-English explanation of what the endpoint does, what auth it needs, and what to expect.
Convert cURL → Request
Paste a cURL command from Slack, docs, or Stack Overflow and Pingllo fills in method, headers, and body automatically.
Bring your own API key (Claude or OpenAI). Your data stays in your browser.
Pingllo vs other API testing tools
See how Pingllo compares to Postman, Insomnia, and Hoppscotch. Full comparison →
| Feature | Pingllo | Postman | Insomnia | Hoppscotch |
|---|---|---|---|---|
| No account required | ||||
| Free to start | ||||
| Collections | ||||
| Environment variables | ||||
| GraphQL support | ||||
| Code generation | ||||
| Postman import | — | |||
| No desktop install needed | ||||
| Request history | ||||
| AI doc generation | ||||
| Error explanation in plain English |
Built for every developer
Whether you build, test, or document APIs — Pingllo fits your workflow.
Frontend Developers
Quickly verify API contracts before integrating. Test auth flows, inspect response shapes, and generate ready-to-paste Fetch/Axios snippets.
Backend Developers
Debug endpoints in real time. Use environment variables to switch between local, staging, and production URLs instantly.
QA Engineers
Write automated assertions against response values, status codes, and headers. Spot regressions before they ship.
API Documentation Writers
Build and save example requests in collections. Generate AI-powered docs and shareable links to let readers try APIs live.
Frequently asked questions
Is Pingllo free to use?↓
You can start using Pingllo for free with no signup required. Core API testing features are available to all users. Additional features may be introduced in future plans.
Do I need to create an account?↓
No account is required. Open the tool and start testing immediately. You can optionally create an account to sync data across devices.
Does Pingllo support GraphQL?↓
Yes. Pingllo supports GraphQL queries and mutations with variables. Simply select GraphQL as the body type and write your query.
Can I import my Postman collections?↓
Yes. Pingllo supports importing Postman Collection v2.1 JSON files. All folders, requests, headers, and body configurations are preserved.
Is my API data secure?↓
All requests are proxied through a secure server with private IP blocking to prevent SSRF attacks. Your request data is never stored on our servers.
What authentication methods are supported?↓
Pingllo supports Bearer token authentication, Basic Auth (username + password), and custom header-based auth.
How does AI doc generation work?↓
Pingllo uses your AI key (Claude or OpenAI) to generate Markdown API documentation from your saved requests. You bring your own key — your data never leaves your browser.
Start testing your APIs today
No signup needed to get started. Just open the tool and go. Your first request is one click away.
Get Started Free →Looking for a Postman replacement? See how Pingllo compares
Or read the Complete API Testing Guide