Tagged: Tool-Use

2 posts

Claude API Tool Use: input_schema Rules, stop_reason Flow, Parallel Calls

Claude API Tool Use: input_schema Rules, stop_reason Flow, Parallel Calls

March 26, 2026 · 17 min read · guides
Claude tool use reference: input_schema restrictions (JSON Schema 2020-12), stop_reason loop, parallel calls, streaming. TypeScript that runs.
Claude API Structured Output: 3 Patterns for Guaranteed JSON

Claude API Structured Output: 3 Patterns for Guaranteed JSON

March 25, 2026 · 9 min read · blog
Clean JSON from Claude every time: tool use as schema contract, assistant prefill, stop sequences. When each pattern wins and what breaks them.