MCP tools don't populate output.output in the tool.execute.after hook — the MCP content flows through OpenCode's internal parts pipeline instead. This caused a crash: undefined is not an object (evaluating 'text.length') in the truncate function.
1.1 KiB
1.1 KiB
description: Checklist for investigation setup: orientations, hypothesis, and circuit breaker baselines
Research Setup
Goal: Build a grounded mental model before acting.
Investigation Checklist
Before every hypothesis cycle:
- Hypothesis written (one sentence: "I believe X because Y")
- Falsification criterion written ("if wrong, I'd expect to see ___")
- Falsification test run BEFORE confirmation test
- Result recorded (ELIMINATED with reason, or CONFIRMED with evidence)
- Hypothesis re-evaluated at this tool-call boundary
- All traces/instrumentation removed before next hypothesis
Orientations
Understand (Grounded Theory) — Read code, name what you see. Compare new observations against earlier ones. Connect categories (what calls what, data flows). Write findings to session memory. Stop at saturation.
Diagnose (Strong Inference + Satisficing) — Simple check first: can a
single log answer the question. When no single log answers the question,
triage (see research-triage.md).
Mode Switching
These compose recursively: Understand -> anomaly -> Diagnose -> need context -> Understand -> ...