claude-api
Claude API integration for building LLM-powered applications across Python
by anthropicsFree
Description
claude-api is an agent skill from Anthropic's skills repository, listed on skills.sh. It guides building LLM-powered applications with Claude through the Anthropic SDKs, covering Python, TypeScript, Java, Go, Ruby, C# and PHP. It chooses the right surface for the need, detects the project's language and reads the matching documentation. The listing says the default model is Claude Opus 4.6, with adaptive thinking and streaming, and the single messages endpoint supports tool use, structured outputs, batches and file uploads. The skill has strict rules: it uses the official SDK whenever one exists, uses raw HTTP only when asked or when there is no SDK, does not mix the two, and does not guess SDK function names but checks documented sources first. It refuses to write Anthropic SDK code into a file that is built on a non-Anthropic provider, and asks the user first. A skill is a SKILL.md file of instructions that an AI agent loads when a task calls for it. It is free and open source, and the skills.sh listing shows all three security audits passing.…
Highlights
- Anthropic SDKs for seven languages
- Tool use, structured outputs, batches and uploads
- Checks documented APIs before writing code
- Asks before switching a non-Anthropic file
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claude-api FAQ
What does the claude-api skill do?
It guides building LLM-powered applications with the Claude API and the Anthropic SDKs in the project's language.
Which languages are covered?
Python, TypeScript, Java, Go, Ruby, C# and PHP.
Will it use raw HTTP?
Only when you ask for cURL or REST, the project is a shell project, or the language has no official SDK.
What does it do with OpenAI code?
It stops and asks whether to switch the file to Claude, rather than adding Anthropic calls to a non-Anthropic file.
How do I install it?
Run: npx skills add https://github.com/anthropics/skills --skill claude-api
Is it free?
Yes. It is free and open source. Claude API usage is billed separately by Anthropic.
What are the best claude-api alternatives?
Popular alternatives to claude-api include github, mcporter and skill-creator. See all claude-api alternatives