Claude API

Claude API

Use this skill when the user is building against Anthropic APIs or SDKs, including @anthropic-ai/sdk, anthropic, or Agent SDK integrations.

What This Skill Covers

• Messages API basics across supported languages
• Streaming responses and incremental rendering
• Prompt caching for repeated context
• Tool use and agent-style orchestration
• Batches and Files API workflows
• Model selection and error handling

Working Rules

• Prefer Anthropic official docs and SDK idioms over generic LLM advice.
• Keep examples aligned with the user’s detected language when possible.
• Use the language-specific README.md for standard request flow, auth, and request shape.
• Use the shared docs for topics that cut across all SDKs, such as models, caching, tool-use concepts, and error codes.
• If the user asks for exact current model IDs, feature availability, or pricing, verify against Anthropic’s live docs before answering.

Reading Guide

• Basic request/response flow: {lang}/claude-api/README.md
• Streaming output: {lang}/claude-api/streaming.md
• Tool use: shared/tool-use-concepts.md and {lang}/claude-api/tool-use.md
• Prompt caching: shared/prompt-caching.md
• Batch processing: {lang}/claude-api/batches.md
• File upload flows: {lang}/claude-api/files-api.md
• Model choice or naming: shared/models.md
• API and SDK failures: shared/error-codes.md
• Live sources for fresh answers: shared/live-sources.md

Response Style

• Give production-usable examples, not pseudocode, when the user asks for implementation help.
• Call out when you are making an inference from the docs rather than repeating an explicit guarantee.
• If the user’s request depends on fast-changing details such as model names or pricing, browse Anthropic docs and cite the relevant page.