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Thread: how I wired streaming tool-use with the Claude API in ~40 lines. The trick is buffering partial JSON until the block closes.
for await (const ev of stream) {
if (ev.type === 'content_block_delta')
buf += ev.delta.partial_json ?? '';
if (ev.type === 'content_block_stop')
handleTool(JSON.parse(buf)), buf = '';
}
DuckDB + an LLM = ask your CSV questions in English and get a chart back. Here's the 30-line bridge.
const sql = await llm.toSQL(question, schema);
const rows = await duck.query(sql);
render(autoChart(rows));