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claude-api - Build Claude API integrations with validated JSON

Guides Claude Messages API development with structured outputs, prompt caching, streaming SSE, tool use, model changes, and error handling.

Tags

Updated: 2026-10-16
Claude APIAnthropic SDKstructured outputsprompt cachingstreaming SSEtool useerror handling

Capabilities

Validate JSON schema conformanceConfigure prompt cachingHandle SSE stream errorsImplement structured tool use

Typical Inputs

Anthropic API keyUser promptsJSON schemas

Typical Outputs

Structured JSON responsesTool use requestsSSE stream events

What this skill does

  • Validate JSON schema conformance
  • Configure prompt caching
  • Handle SSE stream errors
  • Implement structured tool use
  • Match tool result IDs
  • Track model deprecations
  • Validate semantic correctness

Inputs

  • Anthropic API key
  • User prompts
  • JSON schemas
  • Tool definitions
  • Source text
  • Codebase content

Outputs

  • Structured JSON responses
  • Tool use requests
  • SSE stream events
  • Cache usage metrics
  • API error events

Requirements

  • Anthropic API access
  • Anthropic SDK v0.69.0 or later
  • Supported Claude models
  • Structured outputs beta header
  • Code execution tool for Agent Skills

Source

  • Spec: SKILL.md

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