0xranx/agentbrief

Pluggable role definitions for AI coding agents — one command turns Claude Code / Cursor / OpenCode / Codex into a specialized professional

45Stars on the repository
30Mods indexed here, across every type
5mo agoLast push, which is what freshness is scored on
MITLicence, which decides whether bodies are shown

agent-browser

01

0xranx/agentbrief

Skill Claude CodeCodex

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a…

45 5mo ago A 108 tokens copy · 84% MIT

self-improving

02

0xranx/agentbrief

Skill Claude CodeCodex

Learn from corrections, mistakes, and discoveries during conversations. When the user corrects you, when something fails unexpectedly, or when you discover a project-specific pattern worth remembering — record it as a learning so future sessions benefit automatically.

45 5mo ago A 50 tokens original MIT

architecture-review

03

0xranx/agentbrief

Skill Claude CodeCodex

When reviewing code that involves architectural decisions, new modules, data flow changes, or system design. Use when the PR introduces new services, changes API boundaries, modifies database schemas, adds new dependencies, or restructures significant portions of the codebase. Also use when the user says 'review the…

45 5mo ago A 75 tokens original MIT

review-process

04

0xranx/agentbrief

Skill Claude CodeCodex

Step-by-step workflow for conducting thorough code reviews.

45 5mo ago A 12 tokens original MIT

verification

05

0xranx/agentbrief

Skill Claude CodeCodex

Enforce evidence-based verification before claiming any task is complete.

45 5mo ago A 13 tokens original MIT

metrics-framework

06

0xranx/agentbrief

Skill Claude CodeCodex

When the user needs to define KPIs, set up a metrics framework, choose what to measure, or says 'what should we track,' 'define our metrics,' 'KPIs,' 'north star metric,' 'how do we measure success,' 'OKRs,' 'dashboard metrics,' or is starting a new product/feature and needs to decide what data matters.

45 5mo ago A 76 tokens original MIT

sql-query-builder

07

0xranx/agentbrief

Skill Claude CodeCodex

When the user needs help writing SQL queries, analyzing data, building reports, or says 'write a query,' 'SQL help,' 'pull this data,' 'how many users,' 'funnel analysis,' 'cohort analysis,' 'retention query,' or needs to extract insights from a database.

45 5mo ago A 64 tokens original MIT

0xranx/agentbrief

Skill Claude CodeCodex

When reviewing UI/UX for quality, consistency, and polish. Use when the user says 'review the design,' 'check the UI,' 'does this look good,' 'design audit,' 'UX review,' or 'polish the frontend.' Also use after implementing any user-facing feature to catch visual and interaction issues before shipping.

45 5mo ago A 71 tokens original MIT

0xranx/agentbrief

Skill Claude CodeCodex

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".

45 5mo ago A 44 tokens copy · 100% MIT

0xranx/agentbrief

Skill Claude CodeCodex

When setting up, debugging, or optimizing CI/CD pipelines. Use when the user mentions 'GitHub Actions,' 'CI/CD,' 'workflow,' 'pipeline,' 'deploy,' 'release automation,' 'build failing,' 'tests not running in CI,' or needs to automate testing, building, or deployment processes.

45 5mo ago A 69 tokens original MIT

0xranx/agentbrief

Skill Claude CodeCodex

Set up monitoring, logging, and observability for applications and infrastructure. Use when implementing health checks, metrics collection, log aggregation, or alerting systems. Handles Prometheus, Grafana, ELK Stack, Datadog, and monitoring best practices.

45 5mo ago A 57 tokens original MIT

analytics-setup

13

0xranx/agentbrief

Skill Claude CodeCodex

When the user needs to set up product analytics, event tracking, or says 'set up analytics,' 'add tracking,' 'GA4,' 'Mixpanel,' 'PostHog,' 'Amplitude,' 'what events should we track,' 'conversion tracking,' 'funnel tracking,' or is launching a product and needs to instrument it for data collection.

45 5mo ago A 74 tokens original MIT

brainstorming

14

0xranx/agentbrief

Skill Claude CodeCodex

Design-first approach that generates and evaluates multiple alternatives before coding.

45 5mo ago A 15 tokens original MIT

content-strategy

15

0xranx/agentbrief

Skill Claude CodeCodex

When the user needs help with content marketing strategy, editorial calendar, blog planning, or says 'content strategy,' 'what should we write about,' 'blog topics,' 'editorial calendar,' 'content plan,' 'topic clusters,' 'pillar pages,' or wants to drive organic traffic through content.

45 5mo ago A 63 tokens original MIT

seo-audit

16

0xranx/agentbrief

Skill Claude CodeCodex

When the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking," "SEO issues," "on-page SEO," "meta tags review," "SEO health check," "my traffic dropped," "lost rankings," "not showing up in Google," "site isn't ranking,"…

45 5mo ago A 172 tokens copy · 86% MIT

next-best-practices

17

0xranx/agentbrief

Skill Claude CodeCodex

Next.js best practices - file conventions, RSC boundaries, data patterns, async APIs, metadata, error handling, route handlers, image/font optimization, bundling.

45 5mo ago A 38 tokens copy · 100% MIT

tdd

18

0xranx/agentbrief

Skill Claude CodeCodex

Red-green-refactor cycle for test-driven development.

45 5mo ago A 12 tokens original MIT

specification

19

0xranx/agentbrief

Skill Claude CodeCodex

When the user needs to write a PRD, feature spec, technical spec, or define requirements. Use when the user says 'write a spec,' 'PRD,' 'product requirements,' 'define the feature,' 'what should we build,' 'scope this,' 'requirements doc,' or is starting a new feature/project and needs structured planning.

45 5mo ago A 72 tokens original MIT

qa-test-and-fix

20

0xranx/agentbrief

Skill Claude CodeCodex

When the user wants to find and fix bugs, or says 'QA this,' 'test this,' 'find bugs,' 'why is this broken,' 'it doesn't work,' 'check for bugs,' 'smoke test,' or after any significant code change. This is the full QA cycle: discover → reproduce → diagnose → fix → verify.

45 5mo ago A 75 tokens original MIT

regression-testing

21

0xranx/agentbrief

Skill Claude CodeCodex

When the user wants to prevent regressions, improve test coverage, or says 'add tests,' 'improve coverage,' 'we keep breaking this,' 'write regression tests,' 'characterization tests,' or after fixing a production bug to ensure it never recurs.

45 5mo ago A 57 tokens original MIT

security-review

22

0xranx/agentbrief

Skill Claude CodeCodex

Systematic checklist and process for reviewing code for security vulnerabilities.

45 5mo ago A 14 tokens original MIT

twitter-workflow

23

0xranx/agentbrief

Skill Claude CodeCodex

When the user wants to draft tweets, plan threads, post to Twitter/X, or manage their Twitter presence.

45 5mo ago A 25 tokens original MIT

ceo-review

24

0xranx/agentbrief

Skill Claude CodeCodex

When reviewing product decisions, feature scope, or user-facing changes from a founder/CEO perspective. Use when the user says 'does this make sense,' 'should we build this,' 'review the product,' 'is this good enough,' 'founder review,' 'product sense check,' or before any significant launch. This is the strategic…

45 5mo ago A 82 tokens original MIT