{
  "$schema": "https://top-agent-skills.com/schemas/catalog.v1.json",
  "type": "agent",
  "slug": "claude-api",
  "name": "Claude API",
  "vendor": "Anthropic",
  "native": true,
  "lead": "For the Claude API the practical picks are pdf, web-artifacts-builder and frontend-design — Skills whose whole job is file in, file out, which is what survives a programmatic call. This is the thinnest surface in the catalogue by verified count, and that is the honest signal: most Skills are written for an interactive agent with a shell, not for a request/response API. Use pre-built skill_id values or upload your own via /v1/skills.",
  "installDocs": "https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview",
  "canonical": "https://top-agent-skills.com/skills-for-claude-api",
  "alternates": {
    "html": "https://top-agent-skills.com/skills-for-claude-api",
    "markdown": "https://top-agent-skills.com/skills-for-claude-api.md",
    "json": "https://top-agent-skills.com/skills-for-claude-api.json"
  },
  "rubricVersion": "1.0",
  "methodology": "https://top-agent-skills.com/about/methodology",
  "contentLastUpdated": "2026-07-15",
  "count": 13,
  "topPick": {
    "slug": "frontend-design",
    "name": "frontend-design",
    "score": 92,
    "tagline": "Escape generic AI-generated UIs. Forces a bold, distinctive design direction before any code is written.",
    "url": "https://top-agent-skills.com/skill/frontend-design"
  },
  "ranking": [
    {
      "rank": 1,
      "slug": "frontend-design",
      "name": "frontend-design",
      "score": 92,
      "tagline": "Escape generic AI-generated UIs. Forces a bold, distinctive design direction before any code is written.",
      "bestFor": "Greenfield landing pages, marketing sites, and any UI that should feel intentional rather than templated.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "POST /v1/skills with the frontend-design.zip payload",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/frontend-design",
      "json": "https://top-agent-skills.com/skill/frontend-design.json"
    },
    {
      "rank": 2,
      "slug": "composio",
      "name": "composio",
      "score": 55,
      "tagline": "1,000+ SaaS integrations as one skill. OAuth lifecycle, scoped credentials, structured actions.",
      "bestFor": "Any agent that needs to act on real SaaS systems — Slack, Notion, GitHub, Stripe, Salesforce.",
      "provenance": "verified-org",
      "publisher": "Composio",
      "license": "Apache-2.0",
      "install": "npx skills add composiohq/skills",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/composio",
      "json": "https://top-agent-skills.com/skill/composio.json"
    },
    {
      "rank": 3,
      "slug": "web-artifacts-builder",
      "name": "web-artifacts-builder",
      "score": 52,
      "tagline": "Self-contained HTML artifacts with React + shadcn/ui — no build step, just paste and run.",
      "bestFor": "Demos, prototypes, and one-off interactive artifacts.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "npx skills add github.com/anthropics/skills --skill web-artifacts-builder",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/web-artifacts-builder",
      "json": "https://top-agent-skills.com/skill/web-artifacts-builder.json"
    },
    {
      "rank": 4,
      "slug": "pdf",
      "name": "pdf",
      "score": 52,
      "tagline": "Extract, fill, merge. PDF manipulation with bundled scripts so Claude does not waste tokens generating them.",
      "bestFor": "Bulk PDF text/table extraction, form filling, merging.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "Use skill_id: \"pdf\" with the code-execution-2025-08-25 + skills-2025-10-02 beta headers.",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/pdf",
      "json": "https://top-agent-skills.com/skill/pdf.json"
    },
    {
      "rank": 5,
      "slug": "accessibility-review",
      "name": "accessibility-review",
      "score": 52,
      "tagline": "Pre-handoff a11y audit that catches what design QA misses.",
      "bestFor": "Reviewing a design or live page against WCAG 2.1 AA before engineering handoff or production deploy.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "POST /v1/skills with the skill folder zipped.",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/accessibility-review",
      "json": "https://top-agent-skills.com/skill/accessibility-review.json"
    },
    {
      "rank": 6,
      "slug": "stripe-payments",
      "name": "stripe-payments",
      "score": 51,
      "tagline": "Stripe done right. Checkout, subscriptions, webhooks, idempotency, metered billing.",
      "bestFor": "Teams adding Stripe where webhook handling and idempotency are easy to get wrong.",
      "provenance": "verified-org",
      "publisher": "Stripe",
      "license": "MIT",
      "install": "npx skills add stripe/skills",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/stripe-payments",
      "json": "https://top-agent-skills.com/skill/stripe-payments.json"
    },
    {
      "rank": 7,
      "slug": "firecrawl",
      "name": "firecrawl",
      "score": 49,
      "tagline": "Web scraping, search, and browser automation built to be agent-friendly.",
      "bestFor": "Research workflows, structured extraction at scale, search-grounded answers.",
      "provenance": "verified-org",
      "publisher": "Firecrawl",
      "license": "Proprietary",
      "install": "npx -y firecrawl-cli@latest init --all --browser",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/firecrawl",
      "json": "https://top-agent-skills.com/skill/firecrawl.json"
    },
    {
      "rank": 8,
      "slug": "notion-api-skill",
      "name": "notion-api-skill",
      "score": 49,
      "tagline": "Notion API: page/database CRUD, block hierarchies, rich text, schema sync.",
      "bestFor": "Teams using Notion as a CMS or knowledge base where the agent needs to read and write.",
      "provenance": "verified-org",
      "publisher": "Notion",
      "license": "MIT",
      "install": "npx skills add makenotion/skills",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/notion-api-skill",
      "json": "https://top-agent-skills.com/skill/notion-api-skill.json"
    },
    {
      "rank": 9,
      "slug": "brand-guidelines",
      "name": "brand-guidelines",
      "score": 48,
      "tagline": "Lock generated UIs to a brand. Anthropic's own guidelines, formalized as a skill.",
      "bestFor": "Internal branded artifacts, landing pages that need to match a brand exactly.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "npx skills add github.com/anthropics/skills --skill brand-guidelines",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/brand-guidelines",
      "json": "https://top-agent-skills.com/skill/brand-guidelines.json"
    },
    {
      "rank": 10,
      "slug": "docx",
      "name": "docx",
      "score": 48,
      "tagline": "Word documents end-to-end. Create, edit, comment, track-change.",
      "bestFor": "Generating branded Word reports, edit-with-track-changes workflows.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "Use skill_id: \"docx\".",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/docx",
      "json": "https://top-agent-skills.com/skill/docx.json"
    },
    {
      "rank": 11,
      "slug": "xlsx",
      "name": "xlsx",
      "score": 48,
      "tagline": "Excel spreadsheets with real formulas, charts, and formatting — not flat CSV exports.",
      "bestFor": "Financial models, structured reports, anything that needs formulas.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "Use skill_id: \"xlsx\".",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/xlsx",
      "json": "https://top-agent-skills.com/skill/xlsx.json"
    },
    {
      "rank": 12,
      "slug": "pptx",
      "name": "pptx",
      "score": 48,
      "tagline": "PowerPoint decks with layouts, charts, speaker notes — programmatic from prose.",
      "bestFor": "Generating internal decks at scale, parsing existing decks for content.",
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "install": "Use skill_id: \"pptx\".",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/pptx",
      "json": "https://top-agent-skills.com/skill/pptx.json"
    },
    {
      "rank": 13,
      "slug": "valyu",
      "name": "valyu",
      "score": 46,
      "tagline": "Web search + 36 authoritative data sources. SEC, PubMed, ChEMBL, FRED — agent-grade research.",
      "bestFor": "Research workflows needing current, authoritative data with 79% FreshQA score.",
      "provenance": "verified-org",
      "publisher": "Valyu",
      "license": "Proprietary",
      "install": "npx skills add valyuai/skills",
      "installFollowUp": null,
      "url": "https://top-agent-skills.com/skill/valyu",
      "json": "https://top-agent-skills.com/skill/valyu.json"
    }
  ],
  "faqs": [
    {
      "question": "How do I install a Skill via the Claude API?",
      "answer": "POST your Skill zip to /v1/skills. You receive a skill_id. Reference it in your messages request — the model loads the Skill on demand."
    },
    {
      "question": "Which pre-built Skills are available?",
      "answer": "Anthropic publishes skill_id values for docx, pdf, pptx, xlsx, and several others. The full list is in the platform.claude.com documentation."
    },
    {
      "question": "Do Skills work with prompt caching?",
      "answer": "Yes — Skill definitions are cached as part of the prompt prefix, so repeated invocations within the 5-minute TTL hit the cache cleanly."
    },
    {
      "question": "Are Skills compatible with the Batch API?",
      "answer": "Yes — every request in a batch can reference Skills the same way single requests do. This is the right target for high-volume document processing."
    },
    {
      "question": "Which Claude model should I use?",
      "answer": "Claude Opus 4.7 (claude-opus-4-7) for complex Skills, Claude Sonnet 4.6 (claude-sonnet-4-6) for cost-efficient routine work, Claude Haiku 4.5 for lightweight Skills. Skill performance depends heavily on the model."
    }
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Top Agent Skills (https://top-agent-skills.com)"
}