Intercept & Modify Traffic

Intercept mode pauses requests mid-flight so you can inspect, edit, and decide what to do before they reach the server.

How it works

When intercept is on, every request is held until you act on it. Nothing is forwarded automatically. When intercept is off, traffic flows through normally (still captured and displayed).

TUI

Toggle intercept

Press i to turn intercept on or off. The status bar shows a red INTERCEPT badge when active.

Act on a request

When a request arrives it appears as a ⏸ row. Navigate to it with j/k, then:

Edit inline

Press e to open the editor. The full raw HTTP request is shown and fully editable — method, URI, headers, and body.

POST /api/login HTTP/1.1
host: example.com
content-type: application/json

{"user":"alice","pass":"secret"}

• Arrow keys / Home / End — move the cursor
• Enter — insert a new line
• Backspace / Delete — delete characters
• Esc — finish editing (request stays held, ready to forward)
• f — forward (with your edits applied)
• d — drop
• Esc (again, when not typing) — discard your edits

Binary bodies — if the original body is not valid UTF-8 the editor shows a ⚠ warning. The content is displayed lossily; edits may corrupt binary data.

Web GUI

Click the ⏸ Intercept: OFF button in the toolbar to enable intercept. The button turns red and shows a pending-request count.

Pending requests appear in the table with an amber left border. Click a row to open the editor panel:

• Edit the method, URI, headers, and body directly
• Click Forward to send (with any edits you made)
• Click Drop (504) to block the request
• Press Ctrl+Enter as a keyboard shortcut for Forward
• Press Esc or × to close the panel without acting (request stays pending)

Turning intercept off

Press i (TUI) or click the intercept button (web) again. All pending requests are forwarded immediately so clients do not hang.