Agentic Notation Markup Language (ANML) 1.0

ANML (Agentic Notation Markup Language) is a machine-first markup language for agent-to-agent and agent-to-service communication over the internet. HTML provides visual interfaces for human consumption; ANML describes content, intent, and interaction patterns optimized for machine interpretation with minimal computational overhead. ANML defines an abstract data model that MAY be serialized as XML (application/anml+xml) or JSON (application/anml+json). Both serializations are normative and semantically equivalent. The XML serialization is recommended for human authoring and review; the JSON serialization is recommended for programmatic generation and agent- pipeline consumption. An ANML document defines: * Content: structured, semantic information for machine interpretation * Interactions: operations bound to HTTP methods, endpoints, and parameters * Knowledge: bidirectional information exchange between services and agents * Constraints: disclosure, consent, and authorization rules that agents MUST evaluate before sharing data * State: metadata identifying the current phase of a multi-step interaction * Persona: advisory behavioral and tonal guidance for agent responses ANML standardizes these elements to enable deterministic, efficient agent interactions with reduced reliance on inference over unstructured data.