blindspot

Pre-computed context

Current branch: !git branch --show-current 2>/dev/null || echo "unknown" Project root: !git rev-parse --show-toplevel 2>/dev/null || echo "unknown"

These values orient this session only; resolve files against the project root while working.

Purpose

Every mode of /discovery:explore builds the AGENT's local knowledge and hands off an EXPLORE.md artifact. Blindspot mode builds the USER's knowledge and hands off a better prompt — a different audience and a different deliverable, which is why it is its own skill.

Run it when the user is about to work in territory they don't know — an unfamiliar codebase area OR an unfamiliar domain vocabulary — and the goal is to surface what their framing didn't account for so they can write a sharper implementation prompt. The output is calibrated to the user's disclosed starting point, not to a fixed depth.

Local counterpart discipline to /discovery:explore (what IS in the codebase) and /discovery:research (what SHOULD BE from external sources): blindspot borrows from both lanes but serves the user's understanding rather than the agent's.

Workflow

1. Intake — ask the user's starting point first (one question). Blindspot output calibrates to that disclosure — what they already know bounds which gaps are worth surfacing.
2. Scan — two lanes, chosen by what is unfamiliar:
   • Codebase lane — read the target area (the codebase-reading, git-history, and project-structure dimensions of ${CLAUDE_PLUGIN_ROOT}/skills/explore/SKILL.md) looking specifically for things the user's framing missed: existing patterns they'd duplicate, constraints they'd violate, historical decisions they'd re-litigate, adjacent code their change would break.
   • Domain lane — build a lightweight vocabulary ladder grounded in sources fetched this session (repo files, official docs) — never bare training recall.
3. Output — blindspot cards. One card per blindspot: the gap, why it matters here, and a copyable prompt-fix line. Close by assembling the fixes into ONE improved implementation prompt the user can run next.
4. Escalate when depth warranted — a domain too deep for a lightweight ladder gets a recommendation to run proper external research (/discovery:research) or whatever structured-learning capability the environment provides.

Output format

Present each blindspot as a card:

• Gap — the specific thing the user's current framing did not account for.
• Why it matters here — the concrete consequence in this codebase or domain, not a generic caution.
• Prompt-fix — a single copyable line the user can drop into their prompt to close the gap.

Then assemble every prompt-fix into ONE improved implementation prompt, wrapped in clear copy-start / copy-end markers so the exact text to reuse is unambiguous.

This skill does NOT write EXPLORE.md — its deliverable is the user's understanding plus the improved prompt. When the scan's findings also serve as stage-1 codebase exploration, offer to hand off to /discovery:explore to persist the EXPLORE.md artifact rather than duplicating that responsibility here.

Gotchas

• Presenting training recall as domain fact — the domain lane grounds its vocabulary ladder in sources fetched this session (repo files, official docs). Bare recall is the failure mode this skill exists to avoid, not commit.
• Surfacing the agent's gaps instead of the user's — cards name what the USER's framing missed, calibrated to their intake disclosure, not a generic audit of the area.
• Generic cautions in "why it matters" — each card's consequence is concrete to this codebase or domain; a caution that would read the same in any repo is not a blindspot.
• Writing an artifact by reflex — no EXPLORE.md unless the user opts into the explore handoff.

What this skill does NOT do

• Does not produce the EXPLORE.md handoff — that is /discovery:explore. Hand off to it when the findings double as stage-1 exploration.
• Does not make changes — it surfaces blindspots and coaches a prompt. Execution is a separate step.
• Does not run open-ended external research — the domain lane fetches official docs to ground a lightweight vocabulary ladder; anything deeper routes to /discovery:research.