echo

echo

Echo back the request you send. Useful for debugging HTTP clients, webhooks, and request inspection.

Usage

# Plain text HTTP format (default for curl)
curl https://echo.mirio.dev/any/path

# JSON output
curl https://echo.mirio.dev/?format=json | jq

# Pretty-printed JSON
curl https://echo.mirio.dev/?format=json&pretty

# POST with JSON body
curl -X POST -d '{"key":"value"}' -H 'Content-Type: application/json' https://echo.mirio.dev/

# POST with form data
curl -X POST -d 'name=alice&age=30' https://echo.mirio.dev/

# Any method works
curl -X PUT https://echo.mirio.dev/
curl -X DELETE https://echo.mirio.dev/

Content Negotiation

• text/html (browsers): Rendered HTML page showing method, headers, and body
• application/json or ?format=json: JSON response with all request details
• text/plain (default/curl): HTTP-style text format

Body Handling

Content-Type	Encoding	Output
application/json	json	Parsed JSON object
text/*	text	Raw text string
application/x-www-form-urlencoded	form	Parsed key-value object
Everything else	base64	Base64-encoded string