NumValidate
Data Validation
Open Source phone number validation
No keyHTTPS
Postman Echo
Test api server to receive and return value from HTTP method
Verified 4 days ago: 100% uptime
API key
Not required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 2725ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Postman Echo. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://www.postman-echo.com/ENDPOINT" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
Other Data Validation APIs
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Data Validation
PurgoMalum is a free RESTful web service that filters and removes profanity and unwanted text from input. It supports customization options and can return the results in plain text, XML, or JSON formats.
No keyHTTPS
DataScreenIQ
Data Validation
Screen data for schema drift, type mismatches, and null rate anomalies
API keyCORSHTTPS
SpryTools Email Validation
Data Validation
Syntax + MX + disposable/role-based email validation
API keyCORSHTTPS
Temsor
Data Validation
Validates Turkish national ID, tax number, IBAN, phone, plate and parses addresses
API keyCORSHTTPS
US Autocomplete
Data Validation
Enter address data quickly with real-time address suggestions
API keyCORSHTTPS
Postman Echo — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Postman Echo free to use?
Postman Echo 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 Postman Echo need an API key?
No. We called Postman Echo 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 Postman Echo from browser JavaScript?
Not directly. Postman Echo did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Postman Echo still working?
Yes, as of 2026-09-18. Our automated check reached Postman Echo and recorded a 100% reliability score with a median response time of 2725 ms. We re-check on a schedule, and this page updates with the result.
Is Postman Echo available over HTTPS?
Yes. Postman Echo serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.