HTTP experiments without installing a desktop client
Quickly reproducing a partner's curl example during a video call saves context switching. Paste their URL, method, and headers, then read the JSON body together without sharing API keys through a cloud workspace.
Header and body discipline
Authorization headers must be spelled exactly as the API expects—Bearer versus raw token, custom x-api-key casing, and Content-Type charset parameters all matter for strict gateways.
Browser limits to remember
No client certificates, limited timeout control, and CORS preflight on non-simple headers. When those block you, copy the composed request into curl or httpie for parity testing.