#Anthropic Provider

Configure Savfox to use Anthropic's Claude models.

#Authentication

#Using API Key

[auth]
provider = "anthropic"
api_key = "${ANTHROPIC_API_KEY}"

Or set the environment variable:

export ANTHROPIC_API_KEY=sk-ant-...

#Available Models

#Configuration

[model]
provider_id = "anthropic"
model = "claude-sonnet-4-20250514"

[model.anthropic]
max_tokens = 16384
temperature = 1.0

#CLI Usage

# Use Claude Sonnet 4
savfox -m claude-sonnet-4-20250514 exec "Review this code"

# Use Claude Opus 4
savfox -m claude-opus-4-20250514 exec "Complex analysis"

#Extended Thinking

Claude supports extended thinking for complex reasoning:

[model.anthropic]
thinking_budget_tokens = 10000

This enables Claude to "think" before responding, improving accuracy on complex tasks.

#Tool Use

Claude has native tool use support. Savfox automatically configures tools when using Claude.

#Vertex AI (Anthropic)

Use Claude models via Google Cloud Vertex AI:

[model]
provider_id = "google-vertex-anthropic"
model = "claude-sonnet-4-20250514"

Set the required environment variables:

export GOOGLE_VERTEX_PROJECT=your-project-id
export GOOGLE_VERTEX_LOCATION=us-east5

#Troubleshooting

#Authentication errors

1. Verify your API key format (starts with sk-ant-)
2. Check if the key is valid
3. Ensure you have API access

#Context length errors

1. Reduce the conversation context
2. Use a model with larger context window
3. Enable context compaction

#Rate limits

Anthropic has usage tiers:

• Tier 1: Limited requests
• Tier 2-4: Higher limits

Contact Anthropic for tier upgrades.