Octo STS Overview

Tue, 23 Dec 2025 15:04:05 +0100

Octo STS is a GitHub App developed by Chainguard that acts as a Security Token Service (STS) for the GitHub API. It enables workloads running anywhere that can produce OIDC tokens to federate with GitHub, exchanging those tokens for short-lived GitHub access tokens. The primary goal is to eliminate the need for GitHub Personal Access Tokens (PATs), which are long-lived credentials that pose significant security risks.

Why Octo STS Matters

Long-lived access tokens are a common target in security incidents. When attackers gain access to a PAT, they can exploit it to access repositories, make changes, and pivot to other resources. These tokens often have broad permissions and no expiration date, making them particularly dangerous if compromised.

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Octo STS Overview

Why Octo STS Matters