HTTP Methods Reference

Complete reference of HTTP methods used in REST APIs.

GETCacheable: YesBody: No

Retrieve a resource. Safe and idempotent. Data sent via URL query parameters.

GET /api/users

POSTCacheable: NoBody: Yes

Submit data to create a new resource. Not idempotent — multiple requests may create multiple resources.

POST /api/users

PUTCacheable: NoBody: Yes

Replace an entire resource with new data. Idempotent — same request produces same result.

PUT /api/users/1

PATCHCacheable: NoBody: Yes

Partially update a resource. Only send the fields that need to change.

PATCH /api/users/1

DELETECacheable: NoBody: No

Remove a resource. Idempotent — deleting the same resource twice has the same effect.

DELETE /api/users/1

HEADCacheable: YesBody: No

Same as GET but returns only headers, no body. Useful for checking resource existence.

HEAD /api/users/1

OPTIONSCacheable: NoBody: No

Returns allowed HTTP methods for a resource. Used in CORS preflight requests.

OPTIONS /api/users

CONNECTCacheable: NoBody: No

Establish a tunnel to a server. Used for HTTPS proxy connections.

CONNECT example.com:443

TRACECacheable: NoBody: No

Echo back the received request for debugging. Rarely used in production.

TRACE /debug

Idempotency Summary

Idempotent: GET, PUT, DELETE, HEAD, OPTIONS

Not Idempotent: POST, PATCH, CONNECT, TRACE

Safe: GET, HEAD, OPTIONS, TRACE

Unsafe: POST, PUT, PATCH, DELETE

How to Use HTTP Methods

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Why Use HTTP Methods?

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