Prompt Contract Classification

# Prompt Contract: Primary taxonomy classification

A Prompt Contract defines the interface for a single LLM call. It is a component of the Class Interface Contract for Runtime AI systems.

**System:** Document Classification Agent (Worked Example)
**LLM call name / identifier:** `primary_taxonomy_classification`
**Model version validated against:** `claude-sonnet-4-6`
**Date:** 2026-04-05
**Author:** ai-orchestrator-framework contributors
**Status:** Draft

**Related:** `class-interface-contract.md`, `../gate-2.md`, `../adr/ADR-001-model-selection.md`

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## Purpose

What problem-class operation does this LLM call perform? State this in terms of the Problem Class Definition from Gate 0, not in terms of the model or prompt.