Claude skills and agent skills

AnthropicSkill

solo

anthropics/claude-plugins-official/plugins/math-proof/skills/solo/SKILL.md

Work on one hard mathematics problem in this session yourself, with no sub-agents: reason in stages, record each settled step in a notes file so that nothing written is lost if a response is cut off, and end with a self-contained proof.md. Usage: /math-proof:solo <the problem, stated in full, or the path of a file holding it>.

AnthropicReads credentialsSkill

build-mcp-app

anthropics/claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-app/SKILL.md

This skill should be used when the user wants to build an "MCP app", add "interactive UI" or "widgets" to an MCP server, "render components in chat", build "MCP UI resources", make a tool that shows a "form", "picker", "dashboard" or "confirmation dialog" inline in the conversation, or mentions "apps SDK" in the context of MCP. Use AFTER the build-mcp-server skill has settled the deployment model, or when the user already knows they want UI widgets.

AnthropicReads credentialsSkill

build-mcpb

anthropics/claude-plugins-official/plugins/mcp-server-dev/skills/build-mcpb/SKILL.md

This skill should be used when the user wants to "package an MCP server", "bundle an MCP", "make an MCPB", "ship a local MCP server", "distribute a local MCP", discusses ".mcpb files", mentions bundling a Node or Python runtime with their MCP server, or needs an MCP server that interacts with the local filesystem, desktop apps, or OS and must be installable without the user having Node/Python set up.

AnthropicSkill

build-mcp-server

anthropics/claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-server/SKILL.md

This skill should be used when the user asks to "build an MCP server", "create an MCP", "make an MCP integration", "wrap an API for Claude", "expose tools to Claude", "make an MCP app", or discusses building something with the Model Context Protocol. It is the entry point for MCP server development — it interrogates the user about their use case, determines the right deployment model (remote HTTP, MCPB, local stdio), picks a tool-design pattern, and hands off to specialized skills.

AnthropicSkill

playground

anthropics/claude-plugins-official/plugins/playground/skills/playground/SKILL.md

Creates interactive HTML playgrounds — self-contained single-file explorers that let users configure something visually through controls, see a live preview, and copy out a prompt. Use when the user asks to make a playground, explorer, or interactive tool for a topic.

AnthropicSkill

agent-development

anthropics/claude-plugins-official/plugins/plugin-dev/skills/agent-development/SKILL.md

This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.

AnthropicSkill

command-development

anthropics/claude-plugins-official/plugins/plugin-dev/skills/command-development/SKILL.md

This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.

AnthropicReads credentialsSkill

hook-development

anthropics/claude-plugins-official/plugins/plugin-dev/skills/hook-development/SKILL.md

This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.

AnthropicReads credentialsSkill

mcp-integration

anthropics/claude-plugins-official/plugins/plugin-dev/skills/mcp-integration/SKILL.md

This skill should be used when the user asks to "add MCP server", "integrate MCP", "configure MCP in plugin", "use .mcp.json", "set up Model Context Protocol", "connect external service", mentions "${CLAUDE_PLUGIN_ROOT} with MCP", or discusses MCP server types (SSE, stdio, HTTP, WebSocket). Provides comprehensive guidance for integrating Model Context Protocol servers into Claude Code plugins for external tool and service integration.

AnthropicSkill

plugin-settings

anthropics/claude-plugins-official/plugins/plugin-dev/skills/plugin-settings/SKILL.md

This skill should be used when the user asks about "plugin settings", "store plugin configuration", "user-configurable plugin", ".local.md files", "plugin state files", "read YAML frontmatter", "per-project plugin settings", or wants to make plugin behavior configurable. Documents the .claude/plugin-name.local.md pattern for storing plugin-specific configuration with YAML frontmatter and markdown content.

AnthropicReads credentialsSkill

plugin-structure

anthropics/claude-plugins-official/plugins/plugin-dev/skills/plugin-structure/SKILL.md

This skill should be used when the user asks to "create a plugin", "scaffold a plugin", "understand plugin structure", "organize plugin components", "set up plugin.json", "use ${CLAUDE_PLUGIN_ROOT}", "add commands/agents/skills/hooks", "configure auto-discovery", or needs guidance on plugin directory layout, manifest configuration, component organization, file naming conventions, or Claude Code plugin architecture best practices.

AnthropicSkill

skill-development

anthropics/claude-plugins-official/plugins/plugin-dev/skills/skill-development/SKILL.md

This skill should be used when the user wants to "create a skill", "add a skill to plugin", "write a new skill", "improve skill description", "organize skill content", or needs guidance on skill structure, progressive disclosure, or skill development best practices for Claude Code plugins.

AnthropicSkill

project-artifact

anthropics/claude-plugins-official/plugins/project-artifact/skills/project-artifact/SKILL.md

Generate and publish a project status artifact — an opinionated, tabbed status page for a project too big for one update (overview & success criteria, the workstream sequence, next steps, plus background, plan, risks & open questions, and decisions/FAQ when they earn a tab) — published with the built-in Artifact tool to a default-private claude.ai page the user can share with teammates. Use when a piece of work spans several workstreams and you want a shareable overview kept current. Each artifact is backed by a small per-project config in the plugin data dir, so refreshing it re-gathers live state, redeploys the same URL, and reports only the delta. For software projects whose workstreams are PRs, also read swe.md (the X.Y PR-numbering convention; pulling PR state with gh/git; a per-PR detail block). Needs the built-in Artifact tool (claude.ai login). Not for single-PR changes or public docs.

AnthropicSkill

receipts

anthropics/claude-plugins-official/plugins/receipts/skills/receipts/SKILL.md

Generate a personal Claude Code usage & impact report ("receipts") from this machine's local session transcripts — for justifying Claude Code usage/spend to a manager, self-review, or "what have I been using this for" check-ins. Mines ~/.claude/projects locally (no extra API calls beyond one final write-up), cross-references local git history, and writes a markdown report plus a self-contained HTML receipt to your home directory. Use when the user asks for "receipts", an "impact report", "usage report", wants to "show my Claude Code activity", "prove the value of Claude Code", or runs `/receipts`.

AnthropicSkill

session-report

anthropics/claude-plugins-official/plugins/session-report/skills/session-report/SKILL.md

Generate an explorable HTML report of Claude Code session usage (tokens, cache, subagents, skills, expensive prompts) from ~/.claude/projects transcripts.

SentrySkill

analytics

getsentry/sentry/.agents/skills/analytics/SKILL.md

Instrument and discover analytics events in Sentry's frontend UI. Use when adding tracking to buttons, pages, modals, or custom interactions, when defining new analytics events, when searching for existing events, when auditing analytics coverage for a feature, or when answering questions about how users interact with a feature. Trigger on "add analytics", "track event", "instrument analytics", "analytics event", "track click", "track page view", "add tracking", "what events exist for", "audit analytics", "how many people", "how many users", "are people using", "is anyone clicking", "usage of", "who is using".

Often used withpopups·marketing-council·emails

SentrySkill

backend-conventions

getsentry/sentry/.agents/skills/backend-conventions/SKILL.md

Sentry backend conventions for logging, tracing/spans, span/tag attribute naming, metrics tags, and the options system. Use when adding or editing Python in src/ that logs (logger.info/exception), records metrics (metrics.incr/timing with tags), instruments spans/transactions, calls sentry_sdk.set_tag/set_attribute or set_span_tag/set_span_data, or reads registered options with options.get(). Trigger on "add logging", "log an error", "add a metric", "add a span", "instrument tracing", "set an attribute", "add a tag", "read an option", "LOG005", "LOG011", or metrics tag cardinality questions.

SentrySkill

bump-sentry-dependency

getsentry/sentry/.agents/skills/bump-sentry-dependency/SKILL.md

Bumps an existing Python dependency in getsentry/sentry through the repository's self-serve GitHub Actions workflow. Use when asked to update, upgrade, or bump a Python package version in Sentry. Does not apply to new dependencies, JavaScript packages, or informational questions about dependency management.

No other project uses it yet

SentrySkill

cell-architecture

getsentry/sentry/.agents/skills/cell-architecture/SKILL.md

Reference and active migration guide for Sentry's cell architecture. Explains what cells and localities are and why they're different, how requests reach cells via Synapse API routing, ingestion routing, and the control silo gateway, and how to safely query cross-cell data without silently missing results. The migration section covers how to do migration work: draining the URL_NAME_TO_ACTION registry in test_urls.py to zero (with a recipe for each action type), rolling deploy safety and the two-phase pattern required by independent sentry/getsentry deploys, and the region -> cell rename including what not to rename (DB columns, AWS refs, uptime regions, billing address). Also documents known issues with proposed fixes: integration TeamLinkageView routing, Jira cross-cell fan-out, and relocation endpoint routing.

No other project uses it yet

SentrySkill

cmdk-actions

getsentry/sentry/.agents/skills/cmdk-actions/SKILL.md

Guide for adding new actions to Sentry's Command+K palette. Use when implementing new cmdk actions, registering page-level or global actions, building async resource pickers, or adding contextual actions to a view.

No other project uses it yet