405 Not Allowed «CERTIFIED»

Eli, a young traveler, stood before the heavy oak doors of the . He had a simple task: he wanted to leave a letter for a friend. He walked up to the reception desk, where a clerk sat behind a glass partition.

"I’d like to this letter into the library's collection," Eli said, sliding a sealed envelope toward the slot. 405 Not Allowed

Eli sighed, realizing his mistake. He had the right address, but he was trying to use an "enter" key on a door that only had a handle to "exit." He tucked his letter away and set off for the correct endpoint. Eli, a young traveler, stood before the heavy

"If you want to leave something," the clerk explained, "you need to go to the . That building accepts the POST method. Here, we only let people look." "I’d like to this letter into the library's

For a quick technical breakdown of why this error happens in the real world, check out this summary:

The clerk pointed to a small plaque on the wall—the . It listed the only "verbs" the building accepted: GET, HEAD, OPTIONS .