Most Installed Agent Skills (All Time)

Create and edit presentation slide decks (`.pptx`) with PptxGenJS, bundled layout helpers, and render/validation utilities. Use when tasks involve building a new PowerPoint deck, recreating slides from screenshots/PDFs/reference decks, modifying slide content while preserving editable output, adding charts/diagrams/visuals, or diagnosing layout issues such as overflow, overlaps, and font substitution.

Fast headless browser for QA testing and site dogfooding. Navigate pages, interact with elements, verify state, diff before/after, take annotated screenshots, test responsive layouts, forms, uploads, dialogs, and capture bug evidence. Use when asked to open or test a site, verify a deployment, dogfood a user flow, or file a bug with screenshots. (gstack)

```markdown --- name: awesome-design-md description: Use curated DESIGN.md files from popular websites to give AI coding agents instant design system context for building pixel-perfect UI. triggers: - use a design system from a real website - add a DESIGN.md to my project - make my UI look like Stripe/Vercel/Linear - give my agent design context - apply a design system to my project - build UI matching a popular website style - use awesome-design-md design tokens - drop in a DESI

```markdown --- name: awesome-ai-research-writing description: A curated collection of battle-tested prompts and agent skills for AI-assisted academic research writing, translation, and polishing triggers: - help me polish my research paper - translate my paper from Chinese to English - improve my academic writing - remove AI tone from my paper - help me write a paper abstract - review my paper like a reviewer - shrink or expand my paper section - help me with LaTeX academic writ

Build Gradio web UIs and demos in Python. Use when creating or editing Gradio apps, components, event listeners, layouts, or chatbots.

Reference for writing and editing skills well — the vocabulary and principles that make a skill predictable.

Identifies and validates your product's North Star metric with supporting input metrics. Use when finding North Star, defining success metrics, or when the user types /north-star. Apply for strategy, metric alignment, or team focus.

A relentless interview that asks every frontier question at once, round by round.

中文长篇小说多智能体创作技能（v1.0.1）。支持从零开始新建长篇小说项目，完成世界观/角色/大纲/章节写作、自动推进与读者反馈的完整流程。内置固定层压缩、fixed-context.md强制缓存、摘要+OOC合并触发三项核心优化，新增用户体验优化和自动化工具，显著降低token消耗与操作复杂度。适用场景：新建长篇小说、续写/批量推进章节、自动推进、重写/维护迭代。不适用于短篇（<1万字）、诗歌、散文、翻译或非小说写作。

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.

Teach users any new skill/knowledge X in ~1 hour using a fixed 4-step workflow optimized for complete beginners, focusing on 80/20 rule for maximum value in minimum time. Triggers when user asks to learn something new quickly, or mentions "learn X in one hour".

Interact with X/Twitter via the x-cli terminal client using official X API credentials. Use for posting, reading timelines, searching tweets, liking, retweeting, bookmarks, mentions, and user lookups.

OpenAI Codex CLI wrapper — three modes. Code review: independent diff review via codex review with pass/fail gate. Challenge: adversarial mode that tries to break your code. Consult: ask codex anything with session continuity for follow-ups. The "200 IQ autistic developer" second opinion. Use when asked to "codex review", "codex challenge", "ask codex", "second opinion", or "consult codex". (gstack) Voice triggers (speech-to-text aliases): "code x", "code ex", "get another opinion".

Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .xltx, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like "the xlsx in my downloads") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.

视频文案分析一站式工具。下载在线视频（B站/YouTube/抖音等）、使用FunASR进行高速中文语音转录、 自动校正文稿、并进行三维度综合分析（TextContent/Viral/Brainstorming）。 使用场景：当用户需要分析短视频文案、提取视频内容、学习爆款文案技巧时。 关键词：视频分析、文案分析、语音转文字、FunASR、爆款分析、视频下载

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

Create distinctive, production-grade frontend interfaces with high design quality. Use when the user asks to build web components, pages, or applications and the visual direction matters as much as the code quality.

Generate high-quality Product Requirements Documents (PRDs) for software systems and AI-powered features. Includes executive summaries, user stories, technical specifications, and risk analysis.

Creates, optimizes, and iteratively refines agent prompts, system prompts, developer prompts, and reusable prompt templates. Use when asked to improve a prompt, optimize a system prompt, rewrite an agent prompt, tune prompt wording, make a prompt more reliable, port prompts between OpenAI, Claude, or Gemini, or build prompt evals.

Use when starting any conversation - establishes how to find and use skills, requiring skill invocation before ANY response including clarifying questions

Maintain the OpenClaw memory wiki vault with deterministic pages, managed blocks, and source-backed updates.

FastAPI best practices and conventions. Use when working with FastAPI APIs and Pydantic models for them. Keeps FastAPI code clean and up to date with the latest features and patterns, updated with new versions. Write new code or refactor and update old code.

Extract text from PDFs and scanned documents. Use web_extract for remote URLs, pymupdf for local text-based PDFs, marker-pdf for OCR/scanned docs. For DOCX use python-docx, for PPTX see the powerpoint skill.

Use this skill any time a .pptx or .potx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx or .potx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating existing presentations; combining or splitting slide files; working with templates (.potx), layouts, speaker notes, or comments. Trigger whenever the user mentions "deck," "slides," "presentation," or references a .pptx or .potx filename, regardless of what they plan to do with the content afterward. If a .pptx or .potx file needs to be opened, created, or touched, use this skill.

UI/UX design intelligence for web and mobile. Includes 50+ styles, 161 color palettes, 57 font pairings, 161 product types, 99 UX guidelines, and 25 chart types across 10 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui, and HTML/CSS). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, and check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, and mobile app. Elements: button, modal, navbar, sidebar, card, table, form, and chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, and flat design. Topics: color systems, accessibility, animation, layout, typography, font pairing, spacing, interaction states, shadow, and gradient. Integrations: shadcn/ui MCP for component search and examples.

Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".

Brainstorm and rank iOS/macOS app ideas tailored to developer skills. Use when user says "what should I build", "give me app ideas", "I don't know what to build", "brainstorm app ideas", or "help me find an app idea".

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

Search 10 academic paper databases via REST APIs for research papers, preprints, and scholarly articles. Covers PubMed, PMC (full text), bioRxiv, medRxiv, arXiv, OpenAlex, Crossref, Semantic Scholar, CORE, Unpaywall. Use when searching for papers, citations, DOI/PMID lookups, abstracts, full text, open access, preprints, citation graphs, author search, or any scholarly literature query. Triggers on mentions of any supported database or requests like "find papers on X" or "look up this DOI".

Use this skill when working with game balancing - economy design, difficulty curves, progression systems, reward schedules, playtesting analysis, or tuning game parameters. Triggers on any game design task involving resource sinks and faucets, XP curves, loot tables, difficulty scaling, player retention mechanics, or interpreting playtest data to adjust game feel.

Load your current context at session start. Shows what you were working on, active priorities, and unresolved flags. Also trigger when resuming after a break or when the user asks what am I working on.

Example TaskFlow authoring pattern for inbox triage. Use when messages need different treatment based on intent, with some routes notifying immediately, some waiting on outside answers, and others rolling into a later summary.

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

Create, edit, and manipulate Word documents programmatically using python-docx

将 Vue 3 script setup 代码按逻辑块进行组织，并使用中文注释分隔。当用户要求整理 Vue 代码或清理 script setup 时调用。

Implement MVVM-C (Model-View-ViewModel-Coordinator) pattern for iOS with navigation coordinators and decoupled view controllers. Use when implementing navigation flows, creating coordinators, decoupling views from navigation logic, or managing complex navigation hierarchies. Triggers on MVVM-C, Coordinator, navigation, Router, flow, NavigationStack, coordinator pattern, view model, presentation.

Generate project ideas through creative constraints. Use when the user says 'I want to build something', 'give me a project idea', 'I'm bored', 'what should I make', 'inspire me', or any variant of 'I have tools but no direction'. Works for code, art, hardware, writing, tools, and anything that can be made.

Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.

Use when work should span one or more detached tasks but still behave like one job with a single owner context. TaskFlow is the durable flow substrate under authoring layers like Lobster, ACPX, plugins, or plain code. Keep conditional logic in the caller; use TaskFlow for flow identity, child-task linkage, waiting state, revision-checked mutations, and user-facing emergence.

行业研究助手 - 医药版。专注于医药生物行业研究，包括创新药、仿制药、医疗器械、CXO、医疗服务、中药、生物制品等赛道。 **触发场景**： - 用户研究医药行业/细分赛道（创新药、CXO、器械、医疗服务、中药等） - 分析药品/器械产品管线、研发进度、临床数据 - 医药政策影响分析（集采、医保谈判、DRG/DIP 支付改革） - 医药公司竞品对标、估值分析 - 写医药行业研报、晨会材料、客户简报 **关键词**："医药"、"创新药"、"CXO"、"医疗器械"、"集采"、"医保"、"临床"、"药品"、"生物药"、"中药"、"医疗服务"

智能数据分析 Skill，输入 CSV/Excel 文件和分析需求，输出带交互式 ECharts 图表的 HTML 自包含分析报告

Self-improving agent system that analyzes conversation quality, identifies improvement opportunities, and continuously optimizes response strategies.

# 微短剧剧本创作 Skill 你是一位专业的微短剧编剧，精通短视频平台的爆款短剧创作方法论。你将引导用户从选题到完稿，完成一部 50-100 集的完整微短剧剧本。 ## 工作目录 所有创作产物保存在当前项目目录下： ``` {项目目录}/ ├── creative-plan.md # 创作方案 ├── characters.md # 角色档案 ├── episode-directory.md # 分集目录 ├── episodes/ # 分集剧本 │ ├── ep001.md │ ├── ep002.md │ └── ... ├── compliance-report.md # 合规报告（如生成） └── export/ # 导出目录 └── {剧名}-完整剧本.md ``` ## 创作状态追踪 每次对话开始时，检查项目目录下是否已有创作产物，自动恢复进度。用以下状态追踪创作流程： ``` 状态文件: .drama-sta

Helps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express interest in extending capabilities. This skill should be used when the user is looking for functionality that might exist as an installable skill.

Use when the user wants keyword-based academic paper discovery in Paper Study, including requests to search papers by topic, date range, or source such as arXiv, Semantic Scholar, bioRxiv, PubMed, Hugging Face daily papers, or similar Chinese requests about paper search.

Orchestrate via @babysitter. Use this skill when asked to babysit a run, orchestrate a process or whenever it is called explicitly. (babysit, babysitter, orchestrate, orchestrate a run, workflow, etc.)

End-to-end pipeline for writing ML/AI research papers — from experiment design through analysis, drafting, revision, and submission. Covers NeurIPS, ICML, ICLR, ACL, AAAI, COLM. Integrates automated experiment monitoring, statistical analysis, iterative writing, and citation verification.

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.

具有质量门、评估和恢复控制的连续自主代理循环模式。

Perform a comprehensive security review of the current codebase

Use when creating new skills, editing existing skills, or verifying skills work before deployment

Use when you have a spec or requirements for a multi-step task. Creates comprehensive implementation plans with bite-sized tasks, exact file paths, and complete code examples.

Use this skill when the user is building with `xsai` or any `@xsai/*` package, or is evaluating xsAI for a small OpenAI-compatible workflow with text generation, streaming, tool calling, structured output, embeddings, image generation, speech synthesis, or transcription.

Plan mode for Hermes — inspect context, write a markdown plan into the active workspace's `.hermes/plans/` directory, and do not execute the work.

Process and extract information from PDF documents. Use this skill when the user asks to read, analyze, or extract data from PDF files.

Build and maintain a personal knowledge base using Karpathy's llm-wiki methodology across Claude Code, Codex, and OpenClaw agents.

Word文档美化与格式化专家。专门用于将Word文档中的文本内容转换为专业表格格式，应用一致的样式（深蓝色表头、斑马纹数据行、边框），支持版本化迭代管理。当用户需要美化Word文档、创建专业表格、或递增式优化文档章节时使用此技能。

Use when the user needs to run GitNexus CLI commands like analyze/index a repo, check status, clean the index, generate a wiki, or list indexed repos. Examples: "Index this repo", "Reanalyze the codebase", "Generate a wiki"

Process seismic waveform data including reading MinISEED/SAC files, extracting metadata, and visualizing earthquake signals.

Multi-source RSS news aggregation with Claude-powered sentiment analysis and structured briefing output

分析一个陌生的代码库，并生成一个结构化的入门指南，包括架构图、关键入口点、规范和一个起始的CLAUDE.md文件。适用于加入新项目或首次在代码仓库中设置Claude Code时。

Utilizes Magic by 21st.dev to generate, compare, and integrate multiple production-ready UI component variations.

Publish your Command Palette extension to the Microsoft Store or WinGet. Use when asked to publish, distribute, release, deploy to store, create MSIX packages, submit to WinGet, set up CI/CD for releases, or automate builds with GitHub Actions.

Expert in automating Excel workflows using Node.js (ExcelJS, SheetJS) and Python (pandas, openpyxl).

Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).

Extend and modify the admin dashboard, developer portal, and operations console. Use when adding new admin tabs, metrics, monitoring features, or internal tools. Activates for dashboard development, analytics, user management, and internal tooling.

Analyze Stitch projects and synthesize a semantic design system into DESIGN.md files

Build, review, debug, and scaffold professional Arduino projects across classic AVR boards (`Uno`, `Nano`, `Mega`), Renesas-based R4 boards (`Uno R4 Minima`, `Uno R4 WiFi`, `Nano R4`), ESP32-based Arduino boards, and other common Arduino-family targets. Use when asked for sketches, `.ino` files, Arduino IDE 2, Arduino CLI, PlatformIO, or Arduino Cloud workflows, board-specific pin maps, wiring/BOM notes, unit tests, debug plans, upload/serial monitor troubleshooting, or refactors that must stay practical on real hardware.

Proactive security audit: OWASP top 10, dependency vulnerabilities, secrets detection, input validation, auth patterns, and secure defaults. MUST BE USED when user mentions: "security", "vulnerability", "audit", "OWASP", "CVE", "security review", "pentest", "injection", "XSS", "CSRF", "authentication", "authorization", "secrets", "hardcoded password", "secure", "npm audit", "pip-audit", "check security", "is this secure", "security risk", "data leak", "SQL injection", "command injection", "path traversal", "SSRF", "RCE", "privilege escalation", "supply chain", "dependency scan", "snyk", "trivy", "semgrep", "bandit". Scans code for vulnerabilities, checks dependencies, verifies auth patterns. NOT for explaining security concepts (use pedagogical-explain), or general code review (use code-review).

Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files) or Word templates (.dotx files). Triggers include: any mention of 'Word doc', 'word document', '.docx', '.dotx', or requests to produce professional documents with formatting like tables of contents, headings, page numbers, or letterheads. Also use when extracting or reorganizing content from .docx or .dotx files, inserting or replacing images in documents, performing find-and-replace in Word files, working with tracked changes or comments, or converting content into a polished Word document. If the user asks for a 'report', 'memo', 'letter', 'template', or similar deliverable as a Word or .docx file, use this skill. Do NOT use for PDFs, spreadsheets, Google Docs, or general coding tasks unrelated to document generation.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Tailwind CSS v4 - utility-first CSS framework with CSS-first configuration

Convert Stitch designs into production React + Vite dashboards with TanStack Query, accessible tokens from DESIGN.md, and Web3-ready patterns (ethers/viem).

Implements Manus-style file-based planning for complex tasks. Creates task_plan.md, findings.md, and progress.md. Use when starting complex multi-step tasks, research projects, or any task requiring >5 tool calls.

Use this skill when implementing on-page SEO fixes in code - meta tags, title tags, heading structure, internal linking, image optimization, semantic HTML, Open Graph and Twitter card tags, and framework-specific SEO patterns. Covers Next.js Metadata API and generateMetadata, Nuxt useSeoMeta, Astro SEO patterns, and Remix meta function. Triggers on any hands-on code task to improve a page's on-site SEO signals.

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.

Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".

Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.

Transforms vague UI ideas into polished, Stitch-optimized prompts. Enhances specificity, adds UI/UX keywords, injects design system context, and structures output for better generation results.

Expert in making CLI tools visually stunning and delightful — not just functional. Covers ANSI color systems (16/256/truecolor with graceful degradation), Unicode box drawing, progress indicators, tables, animated output, ASCII art, rich text, interactive prompts, and full TUI frameworks (Ink, Bubble Tea, Ratatui, Rich, Clack). Activate on: "make this CLI beautiful", "terminal UI", "CLI design", "pretty output", "progress bar", "spinner", "CLI table", "terminal colors", "TUI framework", "interactive prompts", "command line aesthetics", "CLI polish", "terminal styling". NOT for: web UI design (use web-design-expert), GUI desktop apps (use rust-tauri-development), API design (use api-architect), general shell scripting (use devops-expert).

Generate walkthrough videos from Stitch projects using Remotion with smooth transitions, zooming, and text overlays

Frontend development guidelines for React/TypeScript applications. Modern patterns including Suspense, lazy loading, useSuspenseQuery, file organization with features directory, MUI v7 styling, TanStack Router, performance optimization, and TypeScript best practices. Use when creating components, pages, features, fetching data, styling, routing, or working with frontend code.

This skill should be used when the user asks to make a terminal UI beautiful, polished, readable, premium, modern, branded, or visually distinctive; improve visual hierarchy, spacing, typography, borders, color palettes, charts, progress displays, icons, prompts, forms, dashboards, or framework styling. PROACTIVELY activate for: TUI visual design, aesthetic polish, layout composition, terminal typography, color systems, box drawing, chart styling, animation, glyph/icon usage, prompt styling, design critique, visual anti-patterns, and framework-specific styling guidance. Provides: terminal design principles, polish checklists, visual recipes, and accessibility-aware aesthetics.

Analyze Stitch projects and synthesize a semantic design system into DESIGN.md files

Use this skill when writing Playwright e2e tests, debugging flaky tests, setting up visual regression, testing APIs with request context, configuring CI sharding, or automating browser interactions. Triggers on Playwright, page.route, storageState, toHaveScreenshot, trace viewer, codegen, test.describe, page object model, and any task requiring Playwright test automation or flaky test diagnosis.

基于协议的依赖注入，用于可测试的Swift代码——使用聚焦协议和Swift Testing模拟文件系统、网络和外部API。

Create, edit, improve, or audit AgentSkills. Use when creating a new skill from scratch or when asked to improve, review, audit, tidy up, or clean up an existing skill or SKILL.md file. Also use when editing or restructuring a skill directory (moving files to references/ or scripts/, removing stale content, validating against the AgentSkills spec). Triggers on phrases like "create a skill", "author a skill", "tidy up a skill", "improve this skill", "review the skill", "clean up the skill", "audit the skill".

Modern React patterns and principles. Hooks, composition, performance, TypeScript best practices.

Analyze Stitch projects and synthesize a semantic design system into DESIGN.md files

Control Blender directly from Hermes via socket connection to the blender-mcp addon. Create 3D objects, materials, animations, and run arbitrary Blender Python (bpy) code. Use when user wants to create or modify anything in Blender.

Transforms vague UI ideas into polished, Stitch-optimized prompts. Enhances specificity, adds UI/UX keywords, injects design system context, and structures output for better generation results.

AI图片生成与编辑工具，使用Sih.AI API进行自然语言驱动的图片处理。支持换装、换背景、换脸、风格转换（动漫/粘土/油画等）、美颜修图等功能。当用户需要通过自然语言描述来编辑图片（如"把衣服换成bikini"、"背景换成海边"、"转换成动漫风格"）时使用此skill。

Perform thorough code reviews with security, performance, and maintainability analysis. Use when user asks to review code, check for bugs, or audit a codebase.

Converts Stitch designs into modular Vite and React components using system-level networking and AST-based validation.

Use when the user asks how to build with OpenAI products or APIs and needs up-to-date official documentation with citations, help choosing the latest model for a use case, or explicit GPT-5.4 upgrade and prompt-upgrade guidance; prioritize OpenAI docs MCP tools, use bundled references only as helper context, and restrict any fallback browsing to official OpenAI domains.

Add and manage evaluation results in Hugging Face model cards. Supports extracting eval tables from README content, importing scores from Artificial Analysis API, and running custom model evaluations with vLLM/lighteval. Works with the model-index metadata format.

微信公众号文章全流程创作技能。从选题构思到成稿排版的一站式写作助手，内置 Dan Koe 风格写作框架、AI痕迹智能去除、公众号专业排版输出。当用户需要撰写公众号文章、优化文章风格或排版输出时使用。

Consult & operate against the Hyperliquid Names API. Use when your agent needs to resolve `.hl` names, reverse-resolve addresses, fetch HLN profiles or records, inspect owner or list queries, diagnose HLN API failures, prepare a mint-pass request, or guide HyperEVM dApp integration with HL Names.

STMicroelectronics STM32 HAL and Low-Level driver expertise

Server-side JavaScript hooks for PocketBase (pb_hooks). Use when writing custom routes, event hooks, cron jobs, sending emails, making HTTP requests, querying the database, or extending PocketBase with server-side logic. Covers the goja ES5 runtime, routing, middleware, all event hooks, DB queries, record operations, and global APIs.