# G09 — Usage and Cost API

- Publisher: Anthropic / Claude Platform Docs
- Primary source: [Usage and Cost API](https://platform.claude.com/docs/en/manage-claude/usage-cost-api)
- Observed: 2026-10-22 (Europe/Berlin session date)
- Publication date: unknown — no reliable date established from the read
- Updated date: unknown — no reliable date established from the read
- Read status: opened and relevant section read through web tool
- Evidence locator: Which API do you need?; Usage API — Key concepts
- Evidence class: primary maintainer/provider guidance; not an independent impact study

## Short evidence fragment

> Track usage of server-side tools such as web search.

## Researcher's reading note

The Console Admin API supports historical token/cost reporting with model, workspace and API-key dimensions, including cache categories and server tools. Enterprise SaaS reporting uses a different API.

## Limits and use

Provider reports need application metadata to map costs to accepted business outcomes; permissions and product coverage differ.

## Retention

This card preserves a short evidence fragment and an original reading note; full source text is not copied. FinOps/FOCUS adaptations should credit the FinOps Foundation / FOCUS as applicable (their pages state CC BY 4.0). Re-open mutable documentation before implementing controls.