Agent Skills
Instruction packs that give your AI agent know-how — some work anywhere, some only with the tool they came with.
✦ Standalone skills3,291
Self-contained. Install one into any project and it works on its own — no other software needed.
🧰 Tool add-ons438
Come bundled with a specific tool and only work together with it — they teach your agent how to operate that tool.
🔌 Needs setup first142
Each relies on something you set up separately — such as an app, a command-line tool or an account — and its page names what that is.
mastra-ai · Development
1,553 standalone skills
error-tracking-ruby
★ 49by posthog
PostHog error tracking for Ruby
error-tracking-node
★ 49by posthog
PostHog error tracking for Node.js
error-tracking-react
★ 49by posthog
PostHog error tracking for React
error-tracking-python
★ 49by posthog
PostHog error tracking for Python
error-tracking-go
★ 49by posthog
PostHog error tracking for Go
exploring-apm-traces
★ 49by posthog
Investigates distributed application performance using PostHog APM (OpenTelemetry span) data via MCP. Use when the user asks about service traces, slow HTTP/database spans, error spans, trace IDs, or span attributes — not AI observability traces or product logs. Uses posthog:query-apm-spans, posthog:apm-trace-get, posthog:apm-services-list, posthog:apm-attributes-list, and posthog:apm-attribute-values-list.
error-tracking-nextjs
★ 49by posthog
PostHog error tracking for Next.js
error-tracking-angular
★ 49by posthog
PostHog error tracking for Angular
feature-flags-api
★ 49by posthog
PostHog feature flags for API applications
authoring-log-alerts
★ 49by posthog
Author useful, low-noise log alerts on services in a PostHog project. Use when the user asks to set up alerts for their logs, suggest alerts they should add, or evaluate whether a service is worth monitoring. Covers service triage, baseline characterisation, threshold drafting, back-testing via simulate, and shipping with a notification destination.
error-tracking-android
★ 49by posthog
PostHog error tracking for Android
integration-ruby
★ 49by posthog
PostHog integration for any Ruby application using the Ruby SDK
integration-nuxt-4
★ 49by posthog
PostHog integration for Nuxt 4 applications
integration-react-native
★ 49by posthog
PostHog integration for React Native applications
integration-react-vite
★ 49by posthog
PostHog integration for React applications built with Vite (no router)
error-tracking-flutter
★ 49by posthog
PostHog error tracking for Flutter
error-tracking-ruby-on-rails
★ 49by posthog
PostHog error tracking for Ruby on Rails
feature-flags-flutter
★ 49by posthog
PostHog feature flags for Flutter applications
integration-android
★ 49by posthog
PostHog integration for Android applications
exploring-llm-costs
★ 49by posthog
Investigate LLM spend in PostHog — total cost over time, cost by model, provider, user, trace, or custom dimension, token and cache-hit economics, and cost regressions. Use when the user asks "how much are we spending on LLMs?", "which model / user / feature is most expensive?", "why did cost spike?", wants to build a cost dashboard or alert, or pastes a trace URL and asks about its cost.
integration-astro-static
★ 49by posthog
PostHog integration for static Astro sites using SSG
integration-sveltekit
★ 49by posthog
PostHog integration for SvelteKit applications
integration-tanstack-start
★ 49by posthog
PostHog integration for TanStack Start full-stack applications
integration-react-react-router-6
★ 49by posthog
PostHog integration for React Router v6 applications
feature-flags-dotnet
★ 49by posthog
PostHog feature flags for .NET applications
feature-flags-web
★ 49by posthog
PostHog feature flags for Web (JavaScript) applications
integration-ruby-on-rails
★ 49by posthog
PostHog integration for Ruby on Rails applications
logs-java
★ 49by posthog
PostHog logs for Java
logs-other
★ 49by posthog
PostHog logs for Other Languages
opensea-swaps
★ 43by projectopensea
Swap ERC20 tokens across supported chains via OpenSea's cross-chain DEX aggregator. Get quotes with optimal routing, check token balances, and execute swaps. For NFT trading use opensea-marketplace, for querying token data use opensea-api.