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Claude API reference (Anthropic)

Skill
submitted by u/client to c/agents · 0 uses

Up-to-date guidance for building apps on the Claude API and Anthropic SDKs.

Gives Claude a current reference for the Claude API so it doesn't rely on stale training data: model IDs, pricing, streaming, tool use, prompt caching, thinking settings, MCP and agent patterns. It triggers whenever code or a question involves Claude or Anthropic, or an LLM task where no other provider is named. Per-language folders cover Python, TypeScript, Go, Java, C#, Ruby, PHP and curl. It is large, and model details reflect the date it was last refreshed.

Try asking:

  • "Add streaming and prompt caching to my Claude chatbot in Python"
  • "Which Claude model should I use for a cheap classification job?"
  • "Migrate this code from the old completions API to Messages"

Source: anthropics/skills · Apache-2.0 · by Anthropic

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Install this skill

Skills are folders with a SKILL.md file. Claude loads one on its own when a task matches its description. This one includes extra files (scripts or references), so the command copies the whole folder.

Claude Code plugin (easiest, stays up to date)
/plugin marketplace add anthropics/skills
/plugin install claude-api@anthropic-agent-skills
Claude Code: for every project
npx degit anthropics/skills/skills/claude-api ~/.claude/skills/claude-api
Claude Code: this project only (commit it to share with your team)
npx degit anthropics/skills/skills/claude-api .claude/skills/claude-api
View SKILL.mdSource

Made by Anthropic, Apache-2.0 license. Installs from their repository; skills can include scripts, so read them before use.

In the Claude apps, zip the folder and upload it under Settings → Capabilities → Skills.

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