---
id: supported-bundle-coverage
slug: /measurement/supported-bundle-coverage
title: Supported bundle coverage
description: Definition, collection evidence and limitations for supported bundle coverage.
---

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**Target operating model — recommended contracts, not installed collection.** All owner and cadence entries below are proposals to confirm before the pilot, not assigned responsibilities or approved schedules.

**Unimplemented metric — no live telemetry.** This is a prospective contract, not an implemented calculation or collector.

{/* contract:start */}
Inventoried active installations with verified effective approved, supported and nonrevoked bundle/adapter tuple.

| Contract | Definition |
| --- | --- |
| Numerator | Eligible installation_ids with valid inventory evidence within approved freshness window and matching support matrix |
| Denominator | All expected active installation_ids in the managed pilot inventory |
| Expression | N / D * 100 |
| Aggregation | percent |
| Unit | % |
| Eligible population | Active installation inventory frozen for report, including invisible/offline entries until authoritative offboarding. |
| Exclusions | Verified decommissioned installations and nonpilot assets; lack of telemetry alone never excludes. |
| Events and source | inventory.observed; catalog.published; catalog.revoked; device inventory |
| Owner / cadence | Platform & IT / Weekly and at revocation |
| Missing evidence | Unknown/stale versions count outside numerator, inside denominator. Show inventory discovery coverage versus eligible device roster; if roster unknown metric is provisional. |
| Gaming and limits | Remove silent devices or trust declared versions; reconcile managed inventory and separately label attestation trust. Descriptive signal, not causal AI productivity attribution. Source completeness, task mix and sampling limit inference; report uncertainty. Even verified file digests do not prove a private model followed the content. |
{/* contract:end */}

Read the shared [collection and safeguards](./collection-and-safeguards.mdx) before collecting data; see the [synthetic example and limits](./synthetic-example.mdx).

Return to [Skills Measurement](./index.mdx).

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