Agent Skills Index

Directory / Anthropic Agent Skills / claude-api

claude-api

skill Software development

Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGER — read BEFORE opening the target file; don't skip because it "looks like a one-liner" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens). SKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).
Description from the SKILL.md front matter.

Install

Add the marketplace (once, in Claude Code)
/plugin marketplace add anthropics/skills
Install the claude-api bundle that contains it
/plugin install claude-api@anthropic-agent-skills
Or with GitHub CLI v2.90+ (any supported agent)
gh skill install anthropics/skills claude-api

Commands follow each host's documentation (Claude Code, Claude.ai, Claude API docs). gh skill needs GitHub CLI 2.90 or later and is in public preview.

Catalog
Anthropic Agent Skills (anthropic-agent-skills)
Author
Anthropic
Source code
anthropics/skills
License
Complete terms in LICENSE.txt
Repository stars
182,130 for anthropics/skills (the whole catalog repo)
Added to catalog
2026-03-04
Last change
2026-10-09
Installed via bundle
claude-api

What it contains

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