> ## Content Index
> Fetch the complete content index at: https://www.adlingo.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# Request Signing
- URL: https://www.adlingo.org/glossary/request-signing/
- Published: 2025-01-15T09:50:00.000Z
- Updated: 2025-01-15T09:50:00.000Z
- Description: The practice of cryptographically signing an API request so the receiver can verify who sent it and detect whether it was altered in transit.
- Author: Travis Lusk
- Tags: Agentic Advertising, #glossary, #Import 2026-10-27 17:05

A tamper-proof signature on every message an agent sends. When a request says "book $200K on this deal," the seller needs to know it came from your agent and that nobody changed the number in transit. With agents trading with agents at speed, this is not optional security hygiene. It is table stakes.