Anthropic Provider

Anthropic Provider

The Anthropic provider connects Swixter to Anthropic’s Claude API using the Responses API protocol.

Configuration

swixter claude create my-anthropic-profile \
  --provider anthropic \
  --api-key sk-ant-api03-... \
  --model claude-sonnet-4-6

Provider Details

Field	Value
Provider ID	anthropic
Wire API	responses
Default Base URL	https://api.anthropic.com
Env Key	ANTHROPIC_API_KEY

API Key

Get your API key from the Anthropic Console.

The API key is written to ~/.claude/settings.json as an environment variable when you run swixter claude apply.

Models

You can specify a default model when creating or editing a profile:

swixter claude edit my-anthropic-profile -m claude-opus-4-6

Supported model fields for Claude Code:

Model Field	Environment Variable
Model	ANTHROPIC_MODEL
Default Haiku	ANTHROPIC_DEFAULT_HAIKU_MODEL
Default Opus	ANTHROPIC_DEFAULT_OPUS_MODEL
Default Sonnet	ANTHROPIC_DEFAULT_SONNET_MODEL

Auth Token

Claude Code profiles support an optional auth token:

swixter claude create profile-with-token \
  --provider anthropic \
  --api-key sk-ant-... \
  --auth-token your-auth-token

This sets ANTHROPIC_AUTH_TOKEN in the Claude Code config.

Compatibility

• Compatible with Claude Code
• Not compatible with Codex (requires wire_api: "chat")

For Codex, use a wire_api: "chat" provider like Ollama or a custom OpenAI-compatible provider.