DepFixRouter: a title-plus-flags LinearSVC decides which dependency-bump PRs deserve a repair agent, cutting LLM calls 67%
arXiv 2609.25911·low signal
Only 72 of 497 dependency-update PRs needed real compatibility repair. A creation-time classifier trained on PR titles and bot/dependency flags captured 51.4% of repairs within the top 20% of routed PRs. Calls per captured repair fell from 6.90 to 2.68, and a 60-case pilot cut diagnosis tokens 66%. Features drawn from full PR history looked better but leak hindsight. If Renovate or Dependabot feeds a coding agent, a small pre-agent router is cheaper than sending every bump to the agent.