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claude-api Claude Code Skill

Author
Anthropic
Topics
AI Agents & AI App Development · Claude Code Customization & Workflow
License
Apache-2.0(opens in a new tab)
First cataloged
2026-07-09 (UTC)
Explanation last updated
2026-10-28 (UTC)
Source (GitHub) last updated
2026-10-09 (UTC) (26 days ago)

The explanation below is AI-generated. Please verify it against the sources.

This is a Claude skill that acts as a reference guide for building applications with the Claude API and Anthropic SDKs. It is meant to activate whenever a prompt mentions Claude or Anthropic by name, or describes an LLM-related task without naming a provider, and to stay inactive when another provider's code is clearly in use. According to the SKILL.md file, it covers model selection, pricing, authentication, streaming, tool use, prompt caching, and migration between model versions, and it instructs the assistant to detect the project's programming language before consulting matching documentation files. It also defines named subcommands for migrating code to newer models, auditing prompts for outdated patterns, upgrading the SDK across major versions, reviewing API costs, and building or improving evaluation sets. The skill further documents a separate Managed Agents feature for server-hosted, stateful agents.

About the service

The Claude API is Anthropic's hosted large language model service, reached through a Messages endpoint and official SDKs for languages such as Python, TypeScript, Java, Go, Ruby, C#, and PHP. It offers multiple model families (including Opus, Sonnet, Haiku, and other named tiers) along with features such as tool use, streaming responses, prompt caching, batch processing, and a separate Managed Agents feature that hosts and runs agent sessions on Anthropic's infrastructure.

What you can do with claude-api

  • Get guidance on choosing Claude model IDs, pricing, and thinking/effort settings
  • Receive language-specific code patterns for the official Anthropic SDK or raw HTTP requests
  • Migrate existing Claude integration code to a newer model via the migrate subcommand
  • Audit prompts, tool descriptions, and agent configuration files for outdated patterns via prompt-audit
  • Upgrade the Anthropic SDK dependency across a major version via upgrade
  • Get a cost review and savings suggestions for existing Claude API usage via cost-optimize
  • Build or iteratively improve an evaluation set for a Claude-powered app via build-eval and hillclimb
  • Get guidance on setting up Managed Agents, including agent configuration, environments, and scheduled runs

Sources

History of claude-api

  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api
  • Claude Code Skill Updated skill content (SKILL.md) of claude-api

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