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GitHub Agentic Workflows let developers replace complex YAML scripts with plain natural language Markdown files to automate repository maintenance tasks. The `gh aw` CLI compiles these instructions into a hardened GitHub Actions `.lock.yml` file, which an AI agent (Copilot, Claude, or Codex) executes in a sandboxed container. Security is handled via a defense-in-depth model: agents default to read-only access, and write operations require explicitly declared 'Safe Outputs' to prevent prompt injection attacks. Practical demos include a scheduled daily repo status report, IssueOps slash commands triggered by issue comments, and a Hacker News digest filtered by a developer persona. A Java-specific Copilot SDK is also introduced, maintained via an agentic workflow that syncs upstream changes automatically.

foojay – a place for friends of OpenJDK

Security first: why this isn't just "giving AI the keys"

Taking it further: porting upstream changes agentically back to a downstream project