The Service Handshake v1.1

The Service Handshake is an open interaction standard for service interactions where one or more of the parties is using an AI agent. It defines a structured pre-interaction declaration — the Service Handshake — covering six elements: Goals, Options & Constraints, Data Permissions, Fallback Rules, Cost Parameters, and Authority Level. This open standard addresses four interaction modes in customer service, with particular focus on how consumer AI agents contact human brand representatives, and where AI agents on both sides interact autonomously. This record contains three artefacts: the main standard document, the companion technical specification, and the canonical JSON schema (sh-1.1.schema.json).