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How to Build an AI Software Factory: Agents That Open, Review, and Merge PRs

AnnouncementProductSep 11, 2026

On January 6, 2026, Stephen Toub opened nine pull requests from his phone at 35,000 feet, and seven merged. The article outlines the AI software factory as a five-stage system built around coding agents, where verification runs before human review. It cites Spotify's Fleetshift, shipped in 2023 two years before it had an agent, and describes Firecrawl supplying live web and code context through one MCP block with prompt injection detection on every fetch.

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Evidence

1source· awaiting independent confirmation

No score is assigned. Sources and their independence are shown in the citation chain below.

Citation chain · 1 source

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SpotifyCompanyFirecrawlCompanyFleetshiftModelStephen ToubPerson
Canonical: https://www.firecrawl.dev/blog/ai-software-factory