/headers Request Header Viewer
The exact headers your client sent, echoed back — plus how the edge saw the request. This is your own request reflected, not a scan of a remote host. Credential headers are redacted.
curl curlhub.sh/headers
Usage
With curl
curl curlhub.sh/headers
curl -H "X-Debug: 1" curlhub.sh/headers
With the CLI
curlhub headers
Structured output for scripts
curl -s curlhub.sh/headers -H 'Accept: application/json'
Output
curl curlhub.sh/headers
# GET /headers (https)
Host: curlhub.sh
User-Agent: curl/8.6.0
Accept: */*
X-Forwarded-For: 203.0.113.42
Authorization: Bearer <redacted>
Parameters
| Input | What it does |
|---|---|
-H "Name: value" | Add a header to see it echoed back — handy for testing what a client sends. |
Accept: application/json | Return the headers as a JSON object. |
Recipes
See what a proxy adds
curl -s curlhub.sh/headers | grep -i x-forwarded
Confirm the X-Forwarded-* and CF-* headers your proxy or CDN injects.
Prove a header is being sent
curl -H "Authorization: Bearer x" curlhub.sh/headers
Credential values come back redacted — the header name is echoed, the secret is not.