docs-tools-agents
Anthropic Docs — Tool Use, MCP, Agent SDK, Claude Code, Caching, Batches
URL: https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview Publisher: Anthropic Docs Retrieved: 2026-07-08
Summary
Official Anthropic developer documentation covering the agent/tool surface for the Claude certification. The tool-use overview URL (docs.anthropic.com/...) 301-redirects to platform.claude.com; content fetched from the canonical host. Covers: tool schema (name regex ^[a-zA-Z0-9_-]{1,64}$, description, input_schema, input_examples, strict, defer_loading), tool_choice (auto/any/tool/none), parallel/server-vs-client tools and the stop_reason: "tool_use" loop; prompt caching (cache_control ephemeral, 5m/1h TTL, 1.25x/2x write & 0.1x read, per-model min-token thresholds, 4 breakpoints, 20-block lookback); the MCP connector (beta header mcp-client-2025-11-20, mcp_servers + mcp_toolset, allowlist/denylist via default_config/configs/enabled, defer_loading); the Claude Agent SDK & Claude Code (subagents, hooks & exit codes, settings hierarchy, CLI/headless flags); and the Message Batches API (50% cost, 100,000 requests / 256 MB, 24h expiry, custom_id, processing_status, 4 result types, 29-day retention). Agent SDK / Claude Code facts gathered via WebSearch of the current official pages.