JSON prompt for a Jev + Opus 5.5 dependency migration agent
A full JSON workflow where Opus 5.5 migrates code in small steps per the official guide while Jev picks the next step among inspect, migrate, verify, and escalate based on the diff, test evidence, and remaining budget.
HOW TO TURN JEV + OPUS 5.5 INTO A DEPENDENCY MIGRATION AGENT JSON prompt: { "goal": "Pilot one dependency or API upgrade with a reviewable record of behavior changes.", "inputs": { "repo": "<repository path>", "current": "<pinned version>", "target": "<selected version>", "guide": "<official upgrade guide>" }, "preserve": ["public contracts", "data formats", "expected behavior"], "workflow": [ "Read the guide and map affected call sites, config, data contracts, and runtime behavior.", "Pin the base commit. Run existing checks and record a baseline before editing.", "Have Opus 5.5 migrate one coherent surface at a time in an isolated branch.", "After each change, run build, type, and relevant regression checks. Compare results with the baseline." ], "jev": { "state": ["current diff", "test evidence", "compatibility gaps", "remaining budget"], "choices": ["inspect", "migrate", "verify", "escalate", "prepare_review"], "rule": "Choose the next bounded step from current evidence. Prepare for review only after passing checks are recorded." }, "return": ["version diff", "migration mapping with sources", "patch", "test commands and outputs", "unresolved gaps", "rollback steps"], "limits": [ "Confirm the documented Jev interface before using it. If unavailable, report and stop.", "Report missing evidence instead of guessing.", "Do not merge or deploy." ] } Opus 5.5 checks the official migration guide → updates affected code in small steps → Jev decides when to inspect, verify, or escalate based on recorded results If the checks pass, you get a patch with baseline comparisons, test logs, known gaps, and rollback instructions for review Save this before your next upgrade ↓
This post quotes another post: “Prompt template has an agent fix GitHub issues while Jev picks the next step”