Allow GitHub App (installation token) authentication for Enterprise Copilot billing usage + seat assignment REST endpoints

[fool65c]

🏷️ Discussion Type

Product Feedback

💬 Feature/Topic Area

API

Body

We’d like to request GitHub App authentication support for the following GitHub Enterprise Cloud REST API endpoints, which currently do not work with GitHub App tokens:

• Billing / usage (enterprise):
  https://docs.github.com/en/enterprise-cloud@latest/rest/billing/usage?apiVersion=2026-03-10#get-billing-premium-request-usage-report-for-an-enterprise

This endpoint does not work with GitHub App user access tokens, GitHub App installation access tokens, or fine-grained personal access tokens.

• Copilot seat management (enterprise):
  https://docs.github.com/en/enterprise-cloud@latest/rest/copilot/copilot-user-management?apiVersion=2026-03-10#list-all-copilot-seat-assignments-for-an-enterprise

This endpoint does not work with GitHub App user access tokens, GitHub App installation access tokens, or fine-grained personal access tokens.

Problem / Impact

We need to automate enterprise reporting and governance for:

• Copilot premium request usage (billing/chargeback, cost visibility)
• Copilot seat assignments (license governance, auditing, joiner/mover/leaver workflows)

However, because these endpoints require a classic PAT (or other non–GitHub App auth), we can’t implement this automation in a least-privilege, short-lived-credential way. PAT-based automation creates operational and security issues (rotation, ownership tied to a human account, long-lived secrets, offboarding risk).

Requested capability

Please add support for authenticating to these endpoints with GitHub App installation access tokens (and ideally GitHub App user access tokens where appropriate).

[github-actions[bot]]

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