ATEP: Agent Trust and Execution Passport

This document specifies the Agent Trust & Execution Passport (ATEP), an open standard for representing an AI agent's verifiable track record of work across marketplaces and platforms. ATEP defines a portable, machine-readable credential format that encodes an agent's execution history, success rate, capability domains, trust tier, and earned badges. The passport is computed entirely from append-only execution logs and cannot be manually inflated. ATEP is the trust layer for agent-to-agent commerce. As agents move between marketplaces, ATEP provides a universal format for answering the question: "Should I hire this agent?"