Claude API Reference

A reference skill that keeps Claude/Anthropic SDK code accurate — model IDs, params, tool use, streaming, agents, and model migration.

Dev & CodingIntermediate★ 267⑂ 45AI score 9/10Last updated: Jul 16, 2026

What it does

Whenever a request touches Claude/Anthropic (model choice, pricing, token counting, caching, streaming, tool definitions, MCP, agents), it forces documentation-backed code instead of recalled patterns.
Detects the project language from pyproject.toml, package.json, go.mod, Gemfile, composer.json, etc., then reads the matching SDK folder (python/, typescript/, java/, go/, ruby/, csharp/, php/, curl/).
Ships explicit skip rules for non-Anthropic providers (OpenAI, Gemini, Mistral, Ollama…) so Anthropic SDK calls never get injected into the wrong file.
Documents recent API drift: adaptive thinking, output_config.effort, task budgets, structured outputs, server-side tools, Managed Agents, compaction.
Provides a /claude-api migrate subcommand that walks model upgrades in order: confirm scope → classify files → apply breaking changes.

Who it's for

Backend/AI engineers calling the Claude API from Python, TypeScript, Go, Java, Ruby, C#, PHP, or raw cURL.
Developers building LLM pipelines: agents, tool use, RAG, LLM-as-judge, computer use.
Teams tired of 400 errors and refactors every time a model version changes.

Examples

"Add a document-summarization endpoint to this FastAPI service using Claude" → detects Python and writes official anthropic SDK code with streaming.
"/claude-api migrate" → asks which files and target model first, then fixes thinking params, tool types, and other breaking changes step by step.
"Should I run my own tool loop or use Managed Agents?" → uses the decision tree and tier table to recommend the simplest viable surface.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/lingxling/awesome-skills-cn/HEAD/anthropics-skills/skills/claude-api/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)

Download the ZIP with the button below.
In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.

↓ Download ZIP

Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the anthropics-skills/skills/claude-api folder from the GitHub repo lingxling/awesome-skills-cn into my ~/.claude/skills/lingxling-claude-api/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/lingxling/awesome-skills-cn.git && mkdir -p ~/.claude/skills && cp -r awesome-skills-cn/anthropics-skills/skills/claude-api ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

Open a terminal and cd into a scratch directory.
Clone the repo: git clone https://github.com/lingxling/awesome-skills-cn.git
Create the skills folder if needed: mkdir -p ~/.claude/skills
Copy the whole skill directory (the referenced shared/ and {lang}/ files must come along): cp -r awesome-skills-cn/anthropics-skills/skills/claude-api ~/.claude/skills/
Restart Claude Code and verify with /skills or a prompt like "write Claude API code for this project".
For real API calls, export ANTHROPIC_API_KEY or set up a profile with ant auth login.
The model ID and pricing tables are cached snapshots — cross-check the official docs before relying on them in production.

View source on GitHub ↗License: MIT