1,660 free skills
Debugging skills
Skills for systematic debugging — reproducing bugs, reading stack traces, bisecting regressions, and diagnosing flaky failures.
Sourced from real, public repositories — synced daily, never invented.
1,660 free skills
Skills for systematic debugging — reproducing bugs, reading stack traces, bisecting regressions, and diagnosing flaky failures.
Sourced from real, public repositories — synced daily, never invented.
15 tools across six categories
13 of them never send your data anywhere
Free · No signup · No trial clock
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debugging-dags
astronomer/agents
Comprehensive DAG failure diagnosis and root-cause analysis with structured investigation and prevention recommendations. Use when deep failure investigation is needed, a DAG fails to import/parse or 'airflow dags list' errors on a file; a task or run is failing and must be diagnosed and fixed; requests like 'why did X fail', 'my dag keeps failing — find and fix it', or fixing a broken DAG so it loads cleanly. For simple 'why did it fail / show logs', the airflow skill handles it directly.
deployment
railwayapp/railway-skills
This skill should be used when the user wants to manage Railway deployments, view logs, or debug issues. Covers deployment lifecycle (remove, stop, redeploy, restart), deployment visibility (list, status, history), and troubleshooting (logs, errors, failures, crashes, why deploy failed). NOT for deleting services - use environment skill with isDeleted for that.
grimoire
franalgaba/grimoire
Install and operate Grimoire, author .spell files with full syntax coverage (including advisory decision logic), and run compile/validate/simulate/cast safely. Use when users ask to create, edit, debug, validate, simulate, execute, or explain Grimoire strategies.
axiom-swiftui
charleswiltgen/axiom
Use when building, fixing, or improving ANY SwiftUI UI — views, navigation, layout, animations, performance, architecture, gestures, debugging, iOS 26 features.
phoenix-cli
github/awesome-copilot
Debug LLM applications using the Phoenix CLI. Fetch traces, analyze errors, structure trace review with open coding and axial coding, inspect datasets, review experiments, query annotation configs, and use the GraphQL API. Use whenever the user is analyzing traces or spans, investigating LLM/agent failures, deciding what to do after instrumenting an app, building failure taxonomies, choosing what evals to write, or asking "what's going wrong", "what kinds of mistakes", or "where do I focus" — even without naming a technique.
netlify-access-control
netlify/context-and-tools
Picks the right Netlify protection layer for a deployed site and disambiguates the three unrelated things people call "auth". Use when a developer wants to password-protect a site or previews, restrict a project to their team, make a project public/private, set team visibility defaults, require SSO to view a site, or debug SSO-session symptoms like being logged out mid-session / getting 401s on an SSO-protected site / token expiry or refresh. Routes app-user login ("who is this user in my app") to the netlify-identity skill and dashboard/team SSO SSO elsewhere; this skill only chooses the perimeter layer for site/preview access.
flags
react/react
Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.
systematic-debugging
jnmetacode/superpowers-zh
遇到任何 bug、测试失败或异常行为时使用，在提出修复方案之前执行
self-improving-agent
alirezarezvani/claude-skills
Curate Claude Code's auto-memory into durable project knowledge. Analyze MEMORY.md for patterns, promote proven learnings to CLAUDE.md and .claude/rules/, extract recurring solutions into reusable skills. Use when: (1) reviewing what Claude has learned about your project, (2) graduating a pattern from notes to enforced rules, (3) turning a debugging solution into a skill, (4) checking memory health and capacity.
esp32-firmware-engineer
adamlipecz/esp32-firmware-engineer-skill
ESP32 firmware engineering for ESP-IDF projects. Write, review, and debug embedded C/C++ code involving FreeRTOS tasks/queues/timers, GPIO/I2C/SPI/UART/ADC/PWM peripherals, TWAI/CAN, Wi-Fi/BLE networking, OTA updates, Secure Boot and flash encryption, LVGL display integration, build/flash/monitor workflows, logging, crash analysis, memory/code-size optimization, low-power sleep/wakeup design, on-device USB/serial service terminals, and board bring-up. Use when an agent is asked to implement ESP-IDF firmware features, review embedded changes for correctness or race conditions, investigate boot/runtime failures or Guru Meditation panics, interpret serial logs, fix build/link/flash problems, optimize RAM/flash usage, tune deep sleep/light sleep behavior, harden firmware for production, add a service console/CLI, integrate a display with LVGL, or diagnose hardware-software integration issues on ESP32-class devices.
octocat
mcollina/skills
Use this skill whenever the prompt contains any `github.com` URL, even if the user only pastes a link and gives no GitHub-specific keywords. Handles git and GitHub operations using the gh CLI. Triggers include any GitHub link to an issue, pull request, commit, compare page, Actions run, release, discussion, or repository. Covers creating and reviewing PRs, watching CI checks, interactive rebasing, branch cleanup, submodule management, and repository archaeology with git log/blame/bisect.
n8n-debugging-official
n8n-io/skills
Use when an n8n workflow isn't working, errors appear, results don't match what was expected, or the user says "this isn't working." Triggers on errors, unexpected output, "it's not working", "why is this happening", "the workflow stopped", failure investigation, or any debugging context.
urp-postprocessing
unity-technologies/skills
Sets up, configures, and debugs URP post-processing effects using the Volume framework. Use when the user asks about bloom, tonemapping, color adjustments, depth of field, vignette, motion blur, or other Volume overrides in a URP project.
preference-optimization
wshobson/agents
Align a fine-tuned model with preference data using DPO, ORPO, KTO, or SimPO. Use when preference pairs or thumbs-up/down feedback exist, when choosing between preference-optimization methods, or when a DPO run needs hyperparameters or debugging.
debugging-capacitor
cap-go/capgo-skills
Comprehensive debugging guide for Capacitor applications. Covers WebView debugging, native debugging, crash analysis, network inspection, and common issues. Use this skill when users report bugs, crashes, or need help diagnosing issues.
typst-author
jihe520/mathmodelagent
Generate idiomatic Typst (.typ) code, edit and troubleshoot Typst documents and projects, and answer Typst syntax/reference questions. Use when working with .typ files or when the user explicitly asks for Typst document creation, editing, debugging, compilation, formatting, template work, or package usage.
vision-sft
wshobson/agents
Fine-tune vision-language models (VLMs) with supervised learning on image+text data. Use when adapting a VLM to a visual domain or task, configuring frozen-vision-tower LoRA, or debugging a VLM fine-tune that trains without learning.
ios-android-logs
cap-go/capgo-skills
Guide to accessing device logs on iOS and Android for Capacitor apps. Covers command-line tools, GUI applications, filtering, and real-time streaming. Use this skill when users need to view device logs for debugging.
typescript
sentimony/skills
You MUST use this when configuring tsconfig, resolving compiler errors, debugging slow type-checking, fixing module resolution or ESM/CJS issues, hardening strictness, migrating JavaScript or a new compiler major, or setting up type-checking in monorepos. Not for general feature work in TypeScript code.
codex-theme-switcher
codexthemes/skills
Apply, switch, and restore Codex desktop themes from the local ~/.codexthemes library with one command, and report which theme is currently active. Use when a user asks to apply or activate a theme they created or installed, switch between installed themes, restore the native Codex look, or check or debug which theme is currently applied.
echarts
sentimony/skills
You MUST use this when building, styling, debugging, or optimizing Apache ECharts charts in JavaScript, React, or Vue - setup, lifecycle, responsive resizing, theming, large datasets, streaming, SSR, and symptoms like a blank chart or broken resize. Not for choosing chart types or for other charting libraries.
n8n-node-configuration-official
n8n-io/skills
Use when configuring any n8n node: HTTP, webhooks, database, comms (Slack/Gmail/Discord), AI, triggers, Merge, anything. Triggers on any node-builder call (`node(...)`, `trigger(...)`, `tool(...)`, `memory(...)`, `languageModel(...)`, `ifElse(...)`, `merge(...)`, etc.), configuring a parameter, `useDataOfInput`, `numberOfInputs`, fan-in convergence, or any node-specific debugging.
experience-ui-bundle-2gp-deploy
forcedotcom/sf-skills
MUST activate when the user wants to package, distribute, or install/upgrade/uninstall/promote a UI Bundle as a Salesforce second-generation (2GP) package (project may contain uiBundles/ or sfdx-project.json for packaging tasks; install/upgrade tasks may lack local bundle files). Handles making a bundle packageable, choosing managed/unlocked flavor, creating package/version with sf package, installing/upgrading in another org, and debugging failures. TRIGGER on packaging, 2GP, managed package, unlocked package, AppExchange, package version, sf package, sf package install, sf package upgrade, install a package, upgrade a package, cross-org distribution. DO NOT TRIGGER for plain source deploy to one org (use experience-ui-bundle-deploy) or scaffolding a new bundle (use experience-ui-bundle-project-generate). Apply piecemeal — do ONLY the part asked.
seo-audit
seo-skills/seo-audit-skill
Audit websites for SEO, technical, content, security, JS rendering, and AI readiness using SEOmator CLI. Returns LLM-optimized reports with health scores across 251 rules and 20 categories. Use when analyzing websites, debugging SEO issues, or checking site health.
debug-issue
tirth8205/code-review-graph
Systematically debug issues using graph-powered code navigation
axiom-performance
charleswiltgen/axiom
Use when app feels slow, memory grows, battery drains, or diagnosing ANY performance issue. Covers memory leaks, profiling, Instruments workflows, retain cycles, performance optimization.
axiom-build
charleswiltgen/axiom
Use when ANY iOS build fails, test crashes, Xcode misbehaves, or environment issue occurs before debugging code. Covers build failures, compilation errors, dependency conflicts, simulator problems, environment-first diagnostics.
debug-my-harness
zernie/vigiles
Diagnose why an agent harness misbehaved by reading the local flight-recorder ledger (.vigiles/runs.jsonl) — which skills fired or got hijacked, which hooks blocked or wrongly allowed, which subagent tool-contract violations happened, and how a skill's trigger rate moved. Use when asked why a skill stopped firing, why a hook didn't block, why the wrong skill ran, or to debug/investigate what the harness actually did. NOT for writing new rules (use strengthen) or editing the spec (use edit-spec).
axiom-swift
charleswiltgen/axiom
Use when reviewing Swift code for modern idioms, working with noncopyable types, implementing drag and drop, adding debug deep links, or building for tvOS.
feature-flags
facebook/react
Use when feature flag tests fail, flags need updating, understanding @gate pragmas, debugging channel-specific test failures, or adding new flags to React.
axiom-uikit
charleswiltgen/axiom
Use when bridging UIKit and SwiftUI, modernizing UIKit apps (scene lifecycle, resizability), debugging Auto Layout, Combine, TextKit, PencilKit, or UIKit animations.
dtctl
dynatrace-oss/dtctl
Investigate incidents, debug performance issues, analyze logs, and manage observability resources in Dynatrace using the dtctl CLI. Use this skill whenever the user asks about error rates, latency spikes, service health, crash-looping pods, web vitals, SLO status, open problems, root cause analysis, log patterns, trace analysis, or building dashboards — even if they don't mention Dynatrace by name. Also covers DQL queries, workflow management, notebook and dashboard creation, settings configuration, and any operations against a Dynatrace environment.
nemoclaw-user-monitor-sandbox
nvidia/skills
Inspects sandbox health, traces agent behavior, and diagnoses problems. Use when monitoring a running sandbox, debugging agent issues, or checking sandbox logs. Trigger keywords - monitor nemoclaw sandbox, debug nemoclaw agent issues.
engage-sdk-integration
android/skills
Helps developers integrate, debug, and resolve Play Engage SDK implementation
nemoclaw-user-reference
nvidia/skills
Describes the NemoClaw integration layer and blueprint architecture and how they orchestrate compatible agent sandboxes. Use when looking up architecture, agent integration, plugin structure, or blueprint design. Trigger keywords - nemoclaw architecture, nemoclaw agent architecture, nemoclaw plugin blueprint structure, nemoclaw vs openshell, which cli, nemoclaw cli, openshell cli, sandbox commands, nemoclaw cli commands, nemoclaw command reference, nemoclaw network policy, sandbox egress control operator approval, nemoclaw troubleshooting, nemoclaw debug sandbox issues.
seedance-submitter
postplusai/postplus-skills
Use when preparing, submitting, polling, or debugging Seedance 2.0 or 2.5 video generation jobs from prompts, opening/ending frames, multimodal references, storyboard images, UGC scripts, or voiceover copy. Use for selecting an unambiguous scene endpoint, uploading references, composing submit flags, submitting through PostPlus Cloud, polling predictions, and handing off local render paths.
flags
facebook/react
Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.
webflow-cli:troubleshooter
webflow/webflow-skills
Diagnose and fix Webflow CLI issues including installation problems, authentication failures, build errors, and bundle problems. Uses CLI diagnostic flags (--version, --help, --verbose, --debug-bundler) for troubleshooting.
webgpu
cazala/webgpu-skill
Design, implement, debug, review, and optimize portable WebGPU applications and WGSL shaders. Use when building render or compute pipelines; GPU simulations, cellular automata, particles, image processing, feedback effects, or data-parallel workloads; defining buffers, textures, bind groups, and host-shareable layouts; handling canvas sizing, optional features, errors, device loss, readback, and cleanup; or diagnosing validation, correctness, compatibility, and performance problems.
webflow-code-component:troubleshoot-deploy
webflow/webflow-skills
Debug deployment failures for Webflow Code Components. Analyzes error messages, identifies root causes, and provides specific fixes for common issues.
ue-testing-debugging
quodsoler/unreal-engine-skills
Use when writing automation tests, functional tests, or any test in Unreal Engine. Also use when the user asks about "UE_LOG", logging, log categories, assertion, check, ensure, verify, DrawDebug, debug draw, console command, profiling, Unreal Insights, stat commands, or debugging techniques. See ue-module-build-system for test module setup, and ue-cpp-foundations for general C++ logging patterns.
liveavatar-debug
heygen-com/liveavatar-agent-skills
Troubleshoot and debug LiveAvatar integration issues. Use when the user's LiveAvatar integration isn't working, the avatar is silent, audio is garbled, sessions fail to start, events aren't received, or they're getting API errors.
axiom-location
charleswiltgen/axiom
Use when implementing location services, maps, geofencing, or debugging location/MapKit issues. Covers Core Location, CLMonitor, MapKit, annotations, directions.
gitops-cluster-debug
fluxcd/agent-skills
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ios-simulator
callstack/agent-device
Verify and debug native, React Native, Expo, or Flutter apps on an iOS Simulator with agent-device. Use when an agent needs to launch an app, inspect its live UI, tap, type, scroll, validate a code change, collect failure evidence, or reproduce a workflow on an iPhone or iPad Simulator.
android-emulator
callstack/agent-device
Verify and debug native, React Native, Expo, or Flutter apps on an Android Emulator with agent-device. Use when an agent needs to launch an app, inspect its live UI, tap, type, scroll, validate a code change, collect failure evidence, or reproduce a workflow on an Android virtual device.
debugger
zhaono1/agent-playbook
Advanced debugging specialist for diagnosing and resolving code issues. Use when user encounters bugs, errors, unexpected behavior, or mentions debugging.
debug-model
modular/skills
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liveblocks-best-practices
liveblocks/skills
Use this skill when building, debugging, or answering questions
auth0
auth0/agent-skills
Use when adding, fixing, or improving how an app authenticates users or protects an API, or when using or configuring any Auth0 feature — signing users in and out, sessions and tokens, guarding routes and endpoints, MFA, SSO, Organizations, RBAC, custom domains, Universal Portals for hosted account and organization self-service, or Universal Login branding. Also use to audit a tenant's health, security, and plan fit (CheckMate), to debug why an auth flow fails, to migrate from another auth provider, or to set up the Vercel native integration. Covers any web, mobile, or backend framework and every Auth0 SDK, tool, and API. Use even if the user never mentions Auth0.
payment-provider-protocol
vtex/skills
Apply when implementing a VTEX Payment Provider Protocol (PPP) connector or working with payment/connector endpoint files. Covers all nine required endpoints: Manifest, Create Payment, Cancel, Capture/Settle, Refund, Inbound Request, Create Auth Token, Provider Auth Redirect, and Get Credentials. Use for building or debugging any payment connector that integrates with the VTEX Payment Gateway.
gradle-build-performance
new-silvermoon/awesome-android-agent-skills
Debug and optimize Android/Gradle build performance. Use when builds are slow, investigating CI/CD performance, analyzing build scans, or identifying compilation bottlenecks.
Claude Code Guide
davila7/claude-code-templates
Master guide for using Claude Code effectively. Includes configuration templates, prompting strategies "Thinking" keywords, debugging techniques, and best practices for interacting with the agent.
react-flow
framara/react-flow-skill
Expert guidance for React Flow (@xyflow/react): building interactive node-based graphs, custom nodes and edges, handles, state management, layouting, TypeScript patterns, performance optimization, and theming. Use when writing React Flow code, creating custom nodes or edges, debugging flow issues, optimizing graph performance, integrating with Zustand, or building canvas-based UIs with React Flow.
performance-profiler
alirezarezvani/claude-skills
Systematic performance profiling for Node.js, Python, and Go applications. Identifies CPU, memory, and I/O bottlenecks, generates flamegraphs, analyzes bundle sizes, optimizes database queries, runs load tests with k6 and Artillery. Always measures before and after. Use when investigating a slow endpoint, planning a performance budget, or hunting a memory leak in production.
memory-discipline
rohitg00/agentmemory
The session loop that makes agentmemory pay off, recall before starting work, save at decision points, learn from corrections. Use when starting a nontrivial task, after settling a decision or debugging a gotcha, or whenever deciding if something belongs in memory.
motel-debug
kitlangton/motel
Debug applications with motel, a local OpenTelemetry ingest and query server. Use when the user wants runtime-evidence debugging with traces or logs, wants temporary debug instrumentation that can be removed later, or needs a repo wired to send OTLP/HTTP telemetry to a local motel server. If the target repo uses Effect or @effect/*, also read references/effect.md.
analytics-tracking
alirezarezvani/claude-skills
Set up, audit, and debug analytics tracking implementation — GA4, Google Tag Manager, event taxonomy, conversion tracking, and data quality. Use when building a tracking plan from scratch, auditing existing analytics for gaps or errors, debugging missing events, or setting up GTM. Trigger keywords: GA4 setup, Google Tag Manager, GTM, event tracking, analytics implementation, conversion tracking, tracking plan, event taxonomy, custom dimensions, UTM tracking, analytics audit, missing events, tracking broken. NOT for analyzing marketing campaign data — use campaign-analytics for that. NOT for BI dashboards — use product-analytics for in-product event analysis.
payment-provider-framework
vtex/skills
Apply when designing or implementing a Payment Connector in VTEX IO. Covers PPF implementation, TypeScript 3.9.7 builder-hub constraints and safe dependency resolutions, configuration.json schema validation, PaymentProviderService clients wiring, Secure Proxy scope (authorize-only), ExternalClient vs SecureExternalClient patterns, IOContext access, PPF response helpers, PSP integration checklist, and vtex link debugging. Use for any implementation of a Payment Connector hosted in VTEX IO.
cloudinary-transformations
cloudinary-devs/skills
Create and debug Cloudinary transformation URLs from natural language instructions. Use when building Cloudinary delivery URLs, applying image/video transformations, optimizing media, or debugging transformation syntax errors.