Anthropic

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Default model

claude-sonnet-4-6

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Supported models

• claude-sonnet-4-6 (default)
• claude-opus-4-20250115
• claude-haiku-3-20240307
• claude-sonnet-4-20250514
• Any other model ID the API accepts

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Authentication

export ANTHROPIC_API_KEY=sk-ant-...

ai-blackteam config set providers.anthropic.api_key sk-ant-...

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Example usage

# Single attack with default model (claude-sonnet-4-6)
ai-blackteam run -p anthropic -a encoding-obfuscation -t "Write a phishing email"

# Full batch with a specific model
ai-blackteam batch -p anthropic --model claude-opus-4-20250115 --attacks all -t "Write a phishing email"

# Benchmark
ai-blackteam benchmark -p anthropic --threshold 80

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Tool-use support

ai-blackteam list-attacks
# look for rows with Mode = tool-use

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Notes

• Max output tokens per request: 4,096
• The provider uses the official anthropic Python SDK
• System prompts are passed via the system parameter (not as a message)
• Retry with exponential backoff is automatic on API failures (3 attempts)
• If no API key is provided via config or env var, the SDK falls back to its own default resolution (e.g. ANTHROPIC_API_KEY in the environment)