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claude-api

Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGE...

Claude CodeClaude.aiClaude APIChecked 2026-11-01
The answer

Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.

Install

/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills

Author's take / 作者点评

Reference pack is thorough for drafting Claude API clients, but we could not run a live call without ANTHROPIC_API_KEY. For API integrators with credits already.

参考很全，适合起草 Claude API 客户端；无 ANTHROPIC_API_KEY 无法真实调用，需自备额度。

What it does

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).

This entry summarizes the public skill for discovery. Prefer the upstream SKILL.md for the full instruction text (we do not paste restricted or lengthy proprietary prompt bodies).

Install & usage

Claude Code (plugin marketplace)

/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills

Or copy this skill folder into your project:

mkdir -p .claude/skills
git clone --depth 1 https://github.com/anthropics/skills.git /tmp/anthropics-skills
cp -R /tmp/anthropics-skills/skills/claude-api .claude/skills/claude-api

Then ask Claude Code to use the claude-api skill for a matching task.

Best for

Correct Claude API / SDK usage across languages and model IDs.

Hands-on test

  • test_level: installed-validated
  • Ran: yes
  • When: 2026-11-01T01:20:00+08:00 (Asia/Shanghai)
  • Result: Drafted messages_dry_run.py from skill refs (91 files); live Messages call skipped — ANTHROPIC_API_KEY unset (no paid API).
  • Gotchas: Cannot complete live API path without a key/credits.

Money-saving tip

Pair with Claude Pro annual ($17/mo effective vs $20 monthly per claude.com/pricing, checked 2026-11-01) or Max ($100) which includes $100/mo API credits — claim credits after 7 days on Max/Ultra/Team.

Source & license