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Act on this, mostly signal

Stalemap tells coding agents which dependency APIs changed

What to do

Install the npm tool Stalemap so your coding agent sees API changes after its training cutoff.

Why

A vendor-reported blind test shows a 20.7 point gain over no help with Sonnet 5.5.

Read the source at stalemap.com

What the research found

Stalemap is an npm tool that tells coding agents which dependency APIs changed after the model's training cutoff; vendor-reported blind test shows +20.7 points over no help with claude-sonnet-5-5.

Claims and how well the evidence supports them

  1. Vendor-reported blind test: stalemap +20.7 pts over no help on claude-sonnet-5-5 (95% CI 13.6 to 28.3) across 66 tasks 97%
  2. Installed via npx stalemap; agents can install from stalemap.com/install.md 96%
  3. Example changes: AI SDK 7 replaces maxSteps with stopWhen isStepCount; Next 16 renames middleware.ts to proxy.ts 97%
  4. Median cost per session was $0.050 with stalemap vs $0.041 with no help 99%

Evidence

Actionability rated medium.