Anthropic Advanced Troubleshooting

Overview

Debug complex Claude integration issues that go beyond basic error handling — inconsistent outputs, tool use failures where Claude calls nonexistent tools, streaming connection drops, max_tokens truncation, and image/vision format problems.

Inconsistent Outputs

Symptom: Same prompt gives different answers each time. Cause: temperature defaults to 1.0 (maximum randomness).

// Fix: Set temperature to 0 for deterministic outputs
const message = await client.messages.create({
  model: 'claude-sonnet-4-20250514',
  max_tokens: 1024,
  temperature: 0, // Deterministic
  messages,
});