Anthropic - profClaw

Anthropic’s Claude models are the default recommended provider in profClaw. They offer native tool calling, vision support, and large context windows up to 1M tokens.

Supported Models

Model	ID	Context	Max Output	Tools	Vision	Input $/1M	Output $/1M
Claude Opus 4.6	`claude-opus-4-6`	1M	128K	Yes	Yes	$5.00	$25.00
Claude Sonnet 4.5	`claude-sonnet-4-5-20250929`	200K	16K	Yes	Yes	$3.00	$15.00
Claude Haiku 4.5	`claude-haiku-4-5-20251001`	200K	8K	Yes	Yes	$0.25	$1.25

Setup

Get an API key

Set the environment variable

export ANTHROPIC_API_KEY=sk-ant-api03-...

Or add it to your .env file.

Verify configuration

profclaw doctor --provider anthropic

Environment Variables

string

required

Your Anthropic API key. Format: sk-ant-api03-...

string

Override the API base URL. Useful for proxies or custom endpoints. Defaults to https://api.anthropic.com.

Configuration Example

.env
settings.yml
CLI

ANTHROPIC_API_KEY=sk-ant-api03-...

providers:
  default: anthropic
  anthropic:
    api_key: "${ANTHROPIC_API_KEY}"
    # Optional: custom endpoint
    # base_url: "https://your-proxy.example.com"

profclaw config provider add anthropic --key sk-ant-api03-...
profclaw config provider set-default anthropic

Model Aliases

Alias	Model
`opus`	claude-opus-4-6
`sonnet`	claude-sonnet-4-5-20250929
`haiku`	claude-haiku-4-5-20251001

Usage Examples

# Use default model (auto-selected)
profclaw chat "Explain async/await in JavaScript"

# Use a specific alias
profclaw chat --model opus "Review this architecture"

# Use full model ID
profclaw chat --model claude-haiku-4-5-20251001 "Quick question"

import { chat } from 'profclaw';

const response = await chat("Write a test for this function", {
  model: "opus",
  systemPrompt: "You are a senior TypeScript engineer.",
  temperature: 0.3,
});

profclaw agent run --model sonnet --task "Review PR #42 in profclaw/profclaw"

Notes

Anthropic is the top-priority provider in profClaw’s auto-selection order.
All Claude models support native function calling - tools work reliably without fallback prompting.
Opus has a 1M token context window, suitable for large codebases.
Claude Haiku 4.5 is the recommended model for high-throughput, cost-sensitive workloads.

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​Supported Models

​Setup

​Environment Variables

​Configuration Example

​Model Aliases

​Usage Examples

​Notes

​Related