Automating cross-repo documentation with GitHub Agentic Workflows

What this post added

This post details the implementation of GitHub Agentic Workflows for automating cross-repo documentation. It introduces the concept of agentic workflows with a markdown-based prompt and a compiled GitHub Actions workflow. Key technical contributions include the 'safe-outputs handler' for materialized intent, a GitHub App with scoped permissions for secure cross-repo writes, and a deterministic target branch resolver using pull request milestones. The post also outlines the end-to-end pipeline, the 'safe-outputs contract' with specific tools and allowed actions, and metrics demonstrating the efficiency gains in documentation generation.