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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.

Skill by anthropicsOfficial

IndexedComplete terms in LICENSE.txt★ 183,466
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/anthropics-claude-api

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

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).

Use cases: backend, ml, productivity, agent-building, model-inference, prompt-engineering

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/claude-api

What's inside

Skill name
claude-api
Description
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).
License
Complete terms in LICENSE.txt
Instructions
609 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts
  • Instructions call the network
  • Instructions read files in your home folder (~/.ssh, ~/.aws…)

Agent Skills spec issues

  • description: longer than 1024 characters
  • body: 609 lines (spec recommends under 500)

Files (96)

  • LICENSE.txt
  • SKILL.md
  • README.md · csharp/claude-api/
  • batches.md · csharp/claude-api/
  • files-api.md · csharp/claude-api/
  • streaming.md · csharp/claude-api/
  • tool-use.md · csharp/claude-api/
  • examples.md · curl/
  • managed-agents.md · curl/
  • README.md · go/claude-api/
  • files-api.md · go/claude-api/
  • streaming.md · go/claude-api/
  • tool-use.md · go/claude-api/
  • README.md · go/managed-agents/
  • README.md · java/claude-api/
  • files-api.md · java/claude-api/
  • streaming.md · java/claude-api/
  • tool-use.md · java/claude-api/
  • README.md · java/managed-agents/
  • README.md · php/claude-api/
  • batches.md · php/claude-api/
  • files-api.md · php/claude-api/
  • streaming.md · php/claude-api/
  • tool-use.md · php/claude-api/
  • README.md · php/managed-agents/
  • README.md · python/claude-api/
  • batches.md · python/claude-api/
  • files-api.md · python/claude-api/
  • sdk-upgrade.md · python/claude-api/
  • streaming.md · python/claude-api/
  • tool-use.md · python/claude-api/
  • README.md · python/managed-agents/
  • README.md · ruby/claude-api/
  • streaming.md · ruby/claude-api/
  • tool-use.md · ruby/claude-api/
  • README.md · ruby/managed-agents/
  • admin-api.md · shared/
  • agent-design.md · shared/
  • anthropic-cli.md · shared/
  • claude-platform-on-aws.md · shared/
  • cost-optimization.md · shared/
  • error-codes.md · shared/
  • build-eval.md · shared/evals/
  • cost-hillclimb.md · shared/evals/
  • eval-audit.md · shared/evals/
  • eval-hillclimb.md · shared/evals/
  • SCHEMA.md · shared/evals/report/
  • build-report-lite.mjs · shared/evals/report/
  • runner-scaffold.mjs · shared/evals/report/
  • live-sources.md · shared/
  • managed-agents-api-reference.md · shared/
  • managed-agents-client-patterns.md · shared/
  • managed-agents-core.md · shared/
  • managed-agents-environments.md · shared/
  • managed-agents-events.md · shared/
  • managed-agents-memory.md · shared/
  • managed-agents-multiagent.md · shared/
  • managed-agents-onboarding-from-quickstart.md · shared/
  • managed-agents-onboarding-from-url.md · shared/
  • managed-agents-onboarding.md · shared/
  • …and 36 more

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

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Forks
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Open issues
416
Contributors
16
Last commit (this folder)
Oct 9, 2026 (17 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
Complete terms in LICENSE.txt
Repository
github.com/anthropics/skills
Website
dkritarth.com/skills-personal/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

claude-api skill. Agent Mart. https://agentmart.dev/skills/anthropics-claude-api (last updated 2026-10-24)