Reviewable capability layer for coding agents: portable skills, workflow patterns, verification gates, token-efficient execution, and bounded agent loops.
Skill Codex
Reduce shell and tool-output token waste by preferring targeted commands, diff-only views, error-first logs, narrow slices, counts, and concise summaries instead of large raw stdout dumps. Use on coding, debugging, audits, CI triage, or repo exploration when command output is likely to dominate token usage.
Skill Codex
Audit an agent skill or skillpack for trigger fit, false activation, structure, metadata, intended use, risks, composability, model sensitivity, fixtures, held-out evidence, prompt overhead, catalog drift, and regression risk. Use when deciding whether a skill is ready to publish, revise, evaluate, or keep…
Skill Codex
Evolve Codex skills and agent instructions with a SkillOpt-style loop. Use when creating, refining, or auditing local skills, AGENTS.md rules, prompt playbooks, or reusable agent workflows after repeated task experience, especially when the user asks to "improve your skills", "capture this lesson", "make this…
Skill Codex
Review and route social content before publishing. Use when drafting, adapting, auditing, scheduling, or monitoring posts for LinkedIn, X, Threads, Telegram, newsletters, or other distribution channels where brand voice, factual claims, platform fit, approvals, and no-spam guardrails matter. Enforce draft -> audit ->…
Skill Codex
Turn the current conversation, repo understanding, and clarified decisions into a PRD. Use when a vague feature, client request, internal roadmap item, or discovery thread needs to become a durable product artifact. Prefer repo/domain language, explicit scope, implementation decisions, testing decisions, and…
Skill Codex
Edit, repair, or generate spreadsheet workbooks with structure-preserving Python. Use for Excel or spreadsheet tasks involving .xlsx/.xlsm files, formulas, lookup tables, summaries, formatting preservation, target ranges, workbook QA, or any task where cells must be computed, written, and verified rather than guessed…
Skill Codex
Go up one layer of abstraction and explain how a local piece of code fits into the larger system. Use when the current focus is too narrow, the user is unfamiliar with an area, an audit needs broader context, or a refactor should be explained through modules, seams, and callers instead of line-by-line detail.
Skill Codex
Execute feature work and bug fixes with a tracer-bullet red-green-refactor loop. Use when building behavior that should be guided by tests, when fixing regressions, or when the user wants TDD or test-first execution. Prefer public interfaces, vertical slices, and behavior-focused tests that survive refactors.
Skill Codex
Reduce token waste in long coding-agent sessions by avoiding repeated reads, noisy output, oversized context, broad rewrites, and unnecessary narration. Use on long tasks, heavy repos, multi-file audits, shell-heavy debugging loops, or whenever token budget is a practical delivery constraint.
Skill Codex
Reduce output-token usage without losing technical accuracy. Use when the user asks to save tokens, be terse, stay brief, use caveman mode, use compressed answers, minimize chatter, or when the session is context-tight and the task does not need long prose.
Skill Codex
Audit where tokens are being wasted across startup context, shell output, repeated file reads, bloated agent docs, oversized summaries, and compaction loss. Use when token budget is tight, sessions are degrading, or an agent setup needs measurement-driven optimization.
Skill Codex
Audit and improve web quality across accessibility, performance, UX, privacy, and browser security. Use for frontend audits, client audits, redesigns, landing pages, production-readiness passes, Core Web Vitals, keyboard navigation, privacy reviews, CSP/cookie/header checks, and responsive UI verification.
Skill Codex
Build a low-fidelity wireframe before frontend implementation when layout, hierarchy, and flow are still unclear. Use for landing pages, editorial surfaces, partner-facing sections, and other UI work where a cheap structural pass can prevent expensive redesign loops.
Skill Codex
Separate workflow instructions from safety, authority, escalation, and validation rules. Use when an assistant, agent, or skill pack is getting muddled because process steps, permissions, forbidden actions, and review gates are mixed together.
Skill Codex
A workflow for moving an unfinished Codex Desktop task to Happy on Android at a safe checkpoint. It records the workspace state and next step before starting the resumed session.
Skill Codex
Route a substantial current task to the smallest useful set of professional role stances and carry the work through their explicit handoffs. Use for career, research, publishing, coaching, fitness, business, finance, support, engineering, architecture, or other work where specialist methods materially improve the…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: