kandev/docs/specs/costs

status, system, specification_version, migration, owners

status	system	specification_version	migration	owners
draft	costs	1	complete	kandev

Cost and usage system

Purpose

The cost and usage system owns token usage accounting, subscription quotas, budgets, and cost-aware model routing.

Ownership

This system owns usage events, cost projections, quota state, budget policy, and cheap-model profiles used by task and Office execution.

Exclusions

• Agent profile identity belongs to the agent system.
• Office-specific routing policy belongs to the Office system.

Specification map

Requirements

• Cheap Model Profiles
• Subscription Usage Tracking

System design

• None.

Migration record

All legacy sources assigned to this system are now represented by the canonical requirement and system-design documents above. Source detail is retained in those documents or in their linked design parts.

Related systems

• Agents: supplies model and profile identity.
• Office: consumes cost-aware routing.