lean-build
25Skill Claude CodeCodex
Build feature work with high overbuilding risk. Use for new behavior, product slices, or integrations where repository reuse, strict scope, and an explicit stop condition matter.
Skill Claude CodeCodex
Build feature work with high overbuilding risk. Use for new behavior, product slices, or integrations where repository reuse, strict scope, and an explicit stop condition matter.
Skill Claude CodeCodex
Implement reversible compatibility-safe transitions. Use for schema, data, API, protocol, configuration, or dependency migrations requiring rollback and preservation proof.
Skill Claude CodeCodex
Restructure code while preserving behavior. Use for extraction, consolidation, ownership moves, or cleanup where verification must bracket structural edits.
Skill Claude CodeCodex
Fix bugs and small behavior changes at the narrowest responsible layer. Use when regression proof, preserved surrounding behavior, and task-relevant tests matter.
Skill Claude CodeCodex
Prove existing work meets acceptance conditions without expanding scope. Use for validation-only tasks, completion checks, focused gate runs, and last-mile proof.
Command
Generate a terse caveman-style commit message for staged changes.
Command
Compress a markdown/text file into caveman format to save tokens.
Command
Quick reference card for caveman modes, slash commands, and triggers.
Command
Caveman-style code review — one-line findings with severity.
Command
Show caveman lifetime token-savings stats.
Command
Activate caveman mode (lite | full | ultra | wenyan-lite | wenyan-full | wenyan-ultra | off).
Plugin Claude Code
Cavekit — compressed spec-driven development for Claude Code.
Plugin Claude Code
Cavekit — compressed spec-driven dev. Full loop (grill → spec → research → review → build) over one SPEC.md file: three core commands + four reach-for. Caveman encoding. Bug-to-spec backprop.
Command
Plan-then-execute against SPEC.md. Native Claude Code loop, no sub-agents.
Command
Drift detector. Diff SPEC.md against code. Read-only, zero writes.
Command
Spare-budget design pass. Make one shallow module deep — smaller interface, behavior held, tests green before & after.
Command
Sharpen a fuzzy idea into §G/§C before spec. Calibrated interrogation, one question at a time.
Command
Gather external knowledge into §R so build grounds in facts, not hallucinations. Every finding cites a source.
Command
Adversarial senior review of the spec before build. Refute, don't rubber-stamp. Ends in a go/no-go gate.
Command
Create, amend, or backprop bug into SPEC.md. Sole mutator of spec.
Skill Claude CodeCodex
Bug → spec protocol. When a bug is found or a test fails, trace the cause, decide whether a new §V invariant would catch recurrence, append to §B. This is the one non-obvious thing SDD does that plan-then-execute doesn't. Triggers on test failure, bug report, post-mortem, or explicit user ask.
Skill Claude CodeCodex
Caveman encoding for SPEC.md and spec-adjacent writes. Loaded by /spec, /build, /check. Cuts tokens 75% vs prose while staying precise. Triggers on any write to SPEC.md or when user says "caveman", "compress this", "be brief".
Skill Claude CodeCodex
Read-only drift detector. Diffs SPEC.md against current code and reports violations grouped by severity. Writes nothing — suggests remedies via the spec or build skills but never invokes them. Triggers when the user asks to check drift, audit the spec, verify invariants, or ask whether code still matches the spec.…
Skill Claude CodeCodex
Optional design-improvement pass for when you have spare usage to drain. Finds the shallowest modules in the code the spec touches, researches a deeper design, and proposes refactors that shrink interfaces and hide decisions — behavior held constant, tests green before and after. Proposes §I/§V/§T edits, never silent…