MARKET-SCANNER — Discover what's worth building

Verify MARKET-SCANNER's external tool dependencies are installed and reachable — a ✓/✗ table by tier (advisory; --strict to fail on a missing required tool).

Set or refine the standing DISCOVERY GOAL that scans run over — the constraints on WHAT to discover (niche, builder edge, target price band, stack-fit, effort appetite). Infer-first, one question at a time with a recommended answer + multiple-choice; written to .market-scanner/goal.md.

Inspect the MARKET-SCANNER plugin itself — audit skills, agents, and knowledge for drift, gaps, and duplication; produce a severity-ranked report.

Discover a worth-building opportunity — an adversarially-challenged ideation dialogue that proposes, scores, and KILLS candidates against a market parameter taxonomy until one earns a keep verdict, then hands a validated opportunity to the ideator plugin (or writes a markdown opportunity brief).

MARKET-SCANNER OPPORTUNITY CHALLENGER — the independent skeptic spawned by the market-scan skill before a KEEP opportunity is handed off. A fresh-context second party (NOT the proposing agent) whose sole job is to REFUTE a "keep" verdict: attack market-size assumptions, willingness-to-pay, competitive moat, builder-edge fit, and any kill-criteria the proposer may have rationalised past. Issues exactly one verdict — UPHOLD_KEEP, DOWNGRADE_TO_KILL, or NEEDS_EVIDENCE — with reasons. Carries the KAIZEN self-improvement covenant.

MARKET-SCANNER INSPECTOR — on-demand agent that audits the MARKET-SCANNER plugin it ships in (skills, agents, knowledge, commands under ${CLAUDE_PLUGIN_ROOT}). Triggered by user command only ("inspect MARKET-SCANNER" / "/market-scanner:inspect"). Builds a fresh critical-analysis persona, reads every file, and produces MARKET-SCANNER_INSPECTION_REPORT.md with severity-ranked findings.

Verify MARKET-SCANNER's external tool dependencies are installed and reachable. Trigger with /market-scanner:check (or "check market-scanner prerequisites"). Runs a fast ✓/✗ probe grouped by tier; advisory by default (never blocks), --strict to fail on a missing required tool. Reads the canonical manifest skills/check/requirements.tsv.

Set or refine the standing DISCOVERY GOAL that scans run over. Trigger with /discovery-goal (or "set a discovery goal", "I want to find a SaaS in <niche>", "refine the goal", "loosen the constraints"). Captures the constraints on WHAT to discover (niche, builder edge, target price band, stack-fit, effort appetite, hard constraints) — infer-first, one question at a time with a recommended answer + multiple-choice — and writes them to .market-scanner/goal.md so /market-scan and /loop scan a bounded space.

Discover a worth-building opportunity through an adversarially-challenged ideation dialogue. Trigger with /market-scan (or "let's come up with a new idea", "what should I build?", "find me a market opportunity", "scan for a niche"). Proposes candidate opportunities that fit the standing /discovery-goal, scores each against the market parameter taxonomy (problem severity, demand, market size, willingness- to-pay, pricing power, competition, reachability, stack-fit), KILLS weak ones early, narrows to a survivor, and emits a validated OPPORTUNITY (scorecard + evidence + keep/park/kill verdict). Hands the opportunity to the ideator plugin (REFINEMENT) when installed, else writes a markdown opportunity brief. Use it proactively whenever a user is casting about for something to build.

Improve MARKET-SCANNER itself by folding downstream feedback back into its parameters, scoring, and kill ledger — and by self-cleaving over-broad elements. Trigger with /market-scanner:self-improve (or "the scanner approved a dud — fix it", "fold this ideation feedback in", "self-improve the market-scan skill"). Reflects one element against the covenant + pillars, applies the fix on a branch, runs the adversarial review (foundry's /foundry:pr-review if installed), and opens a PR so every future scan, for all users, gets sharper.

2 hooks across 1 event