Building a software factory for AI SDK
Blog post from Vercel
AI SDK maintainers created ai-sdk-factory, an open-source, human-supervised automation system to manage growing volumes of community issues and pull requests across a widely used AI infrastructure project. Rather than relying on general-purpose coding agents alone, the factory assigns specialized agents to tasks including issue classification, feature and bug analysis, implementation, review, documentation updates, and release backports, while preserving human approval for every merged change. It evaluates work with documented evidence so reviewers can calibrate scrutiny according to risk, and runs agents in isolated sandboxes with limited secrets and network controls to address untrusted public inputs. Built first through a local CLI and later deployed on Vercel-based infrastructure, the system processes GitHub webhooks through queues and provides a monitoring interface for reviewers. In its first four weeks, it reportedly authored 25–35% of weekly merged main-branch pull requests, closed more than 75% of closed issues in July, increased support for older release lines through automated backports, and helped reduce the open-issue backlog. Failed or incomplete agent runs are categorized as flawed, blocked, or manual and used as feedback to improve prompts, evaluations, environments, and the boundaries of automation over time.
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