Anthropic Claude MCP

The Anthropic Claude MCP server allows you to call Claude models as a tool from within another Claude session — enabling powerful multi-agent architectures where specialised sub-agents handle specific tasks. Features: - Call Claude Haiku, Sonnet, or Opus from within any MCP client - Pass custom system prompts to specialise each sub-agent - Stream responses for long-form generation tasks - Control temperature, max tokens, and other parameters - Chain multiple Claude calls in a single workflow - Use different models for different task types (fast Haiku for triage, Opus for reasoning) - Built-in prompt caching for cost efficiency Architecture patterns this enables: - Orchestrator + worker: main Claude delegates to specialised sub-agents - Critique and refine: one Claude generates, another reviews and improves - Parallel processing: multiple Claudes working on parts of a problem simultaneously - Specialised personas: legal Claude, code Claude, writing Claude all in one workflow