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velcrafting/codex-skills

Customizable files for deterministic hierarchy and governance of agents via various: SKILL.md, AGENTS.md, template files, and scripts

37 skills
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prediction-arb

velcrafting/codex-skills

1
This skill identifies price discrepancies between Polymarket and Kalshi to surface researchable arbitrage opportunities for review.
stripe

velcrafting/codex-skills

1
This skill guides seamless Stripe integration for payments, subscriptions, webhooks, and analytics, ensuring secure handling and reliable billing workflows.
client-generation

velcrafting/codex-skills

1
This skill generates and updates typed API clients from canonical contracts to ensure type-safe, deterministic integration across languages.
compatibility-check

velcrafting/codex-skills

1
This skill assesses API compatibility between versions, classifies as compatible, breaking, or unsafe, and lists breaking changes for informed shipping.
integration-adapter

velcrafting/codex-skills

1
This skill helps you implement a robust external API adapter with timeouts, bounded retries, idempotency, and error mapping for reliable integrations.
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data-fetching-integration

velcrafting/codex-skills

1
This skill wires a UI to a data source using repo tooling with typed inputs/outputs and robust loading, error, and caching behavior.
observability-audit

velcrafting/codex-skills

1
This skill standardizes observability during changes by improving logs, metrics, traces, and audit entries to enhance operability.
form-validation

velcrafting/codex-skills

1
This skill implements consistent client-side form validation and accessible error UX aligned with repo conventions to prevent invalid submissions.
frontend-test-additions

velcrafting/codex-skills

1
This skill adds frontend tests to prove UI behavior and prevent regressions across components and routes.
state-modeling

velcrafting/codex-skills

1
This skill defines explicit frontend state models for complex flows, mapping states, events, and derived selectors to improve testability and reliability.
bootstrap-repo

velcrafting/codex-skills

1
This skill bootstraps or refreshes a repo scaffold with governance files and Tree.txt to ensure fast, predictable structure.
create-plan

velcrafting/codex-skills

1
This skill creates a concise, executable plan from a user prompt, outlining scope, steps, validation, risks, and open questions.
decision-capture

velcrafting/codex-skills

1
This skill captures non-trivial decisions as proposed entries for a repository's decision log to combat drift and enable ratification.
governance-sync

velcrafting/codex-skills

1
This skill helps you align governance artifacts with actual changes by generating a delta checklist after milestones.
personalize-repo

velcrafting/codex-skills

1
This skill personalizes a bootstrapped repository by capturing intent and constraints to update docs and generate a canonical REPO_PROFILE.json.
cartographer

velcrafting/codex-skills

1
This skill generates a deterministic project map (Tree.txt and docs/PROJECT_MAP.md) for a repository to aid quick understanding without altering code.
send-email

velcrafting/codex-skills

1
This skill helps you send reliable transactional and bulk emails via the Resend API with best practices, retries, and idempotency keys.
shadcn

velcrafting/codex-skills

1
This skill guides you to implement and customize shadcn/ui components using the latest version and modern patterns.
tailwindcss

velcrafting/codex-skills

1
This skill guides styling with Tailwind CSS using the latest patterns, enables theme customization, and applies modern, perceptually uniform OKLCH colors.
supabase

velcrafting/codex-skills

1
This skill provides comprehensive guidance for building secure, scalable Supabase apps, including RLS, edge functions, storage, and Next.js integration.
component-scaffold

velcrafting/codex-skills

1
This skill creates a new UI component aligned with repo conventions, including structure, typing, styling, and exports for seamless integration.
ui-refactor-extract

velcrafting/codex-skills

1
This skill refactors UI code to improve maintainability by extracting subcomponents and reorganizing structure without changing public APIs, with evidence via
backend-test-additions

velcrafting/codex-skills

1
This skill helps you add focused backend tests to verify invariants, endpoint behavior, and retries across services.
domain-logic-module

velcrafting/codex-skills

1
This skill helps you extract and standardize domain logic into testable modules with explicit invariants and deterministic errors.
endpoint-scaffold

velcrafting/codex-skills

1
This skill helps you scaffold a validated, authorized API endpoint with error mapping and tests, ensuring consistent contracts and coverage.
intake-interview

velcrafting/codex-skills

1
This skill helps you elicit, structure, and document a clear Intake Brief from high-level goals without proposing solutions.
performance-pass-ui

velcrafting/codex-skills

1
This skill helps identify and reduce UI performance regressions by applying targeted optimizations with minimal, verifiable code changes.
kalshi-markets

velcrafting/codex-skills

1
This skill helps you access and analyze Kalshi market data including prices, orderbooks, trades, and events for quick insights.
web-design-guidelines

velcrafting/codex-skills

1
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
ask-questions-if-underspecified

velcrafting/codex-skills

1
This skill clarifies underspecified requirements by asking essential questions before implementing to prevent wrong work and scope drift.
contract-update

velcrafting/codex-skills

1
This skill updates API contracts and client wiring to keep producers and consumers aligned, preventing schema drift and surfacing breaking changes clearly.
authz-policy

velcrafting/codex-skills

1
This skill defines and enforces authorization rules for protected actions, ensuring explicit allows/denies, boundary enforcement, testing, and auditable
a11y-semantics-pass

velcrafting/codex-skills

1
This skill ensures UI changes meet accessibility standards by validating semantics, labels, focus, and ARIA usage across components.
job-worker-orchestration

velcrafting/codex-skills

1
This skill implements idempotent, observable background jobs using the repo's queue system with bounded retries and durable state.
react-best-practices

velcrafting/codex-skills

1
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
persistence-layer-change

velcrafting/codex-skills

1
This skill manages safe persistence-layer changes by guiding schema migrations, data-access updates, and rollout plans that prevent data loss.
email-best-practices-main

velcrafting/codex-skills

1
This skill helps you implement email best practices to improve deliverability, compliance, and user engagement across transactional and marketing emails.