WhatPulse
Tracking
Small application that measures your keyboard/mouse usage
No keyCORSHTTPS
Postmon
An API to query Brazilian ZIP codes and orders easily, quickly and free
Verified 4 days ago: 100% uptime
API key
Not required
HTTPS
Not supported
Browser calls
Yes, CORS enabled
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 1749ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Postmon. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "http://postmon.com.br/ENDPOINT" \
-H "Accept: application/json"This API is served over plain HTTP. Browsers block HTTP requests made from an HTTPS page, so you will need a server-side call.
Where this listing comes from
Aggregated from 2 public sources (public-api-lists, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Postmon — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Postmon free to use?
Postmon is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does Postmon need an API key?
No. We called Postmon on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call Postmon from browser JavaScript?
Yes. Postmon returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is Postmon still working?
Yes, as of 2026-09-18. Our automated check reached Postmon and recorded a 100% reliability score with a median response time of 1749 ms. We re-check on a schedule, and this page updates with the result.
Is Postmon available over HTTPS?
No. Postmon was only reachable over plain HTTP when we checked. Browsers block HTTP requests made from an HTTPS page, so this will fail in production unless you call it from a server instead.