Anthropic

Use this when your team already runs on Anthropic and you want that vendor family to stay explicit in Loong config instead of disappearing behind a generic compatibility route.

At A Glance

Field	Value
Built-in kind	`anthropic`
Provider group	Direct Hosted Providers
Protocol family	`anthropic_messages`
Feature family	`anthropic`
Auth scheme	`x_api_key`
Credential envs	ANTHROPIC_API_KEY
Aliases	`anthropic_compatible`
Default base URL	`https://api.anthropic.com`
Request endpoint	`https://api.anthropic.com/v1/messages`
Models endpoint	`https://api.anthropic.com/v1/models`

Minimal Config

active_provider = "anthropic"

[providers.anthropic]
kind = "anthropic"
api_key = { env = "ANTHROPIC_API_KEY" }
model = "auto"

Verify It

loong doctor
loong runtime models list
loong ask --message "Say hello and name the active provider."

If runtime models list is unreliable for this account or region, pin an explicit provider.model or add preferred_models instead of leaving recovery implicit.

Auth And Routing Contract

Contract	Value
Auth optional	no
Model probe auth optional	no
Default API key env	`ANTHROPIC_API_KEY`
OAuth env	none
Primary request route	`https://api.anthropic.com/v1/messages`
Primary model-catalog route	`https://api.anthropic.com/v1/models`

Operator Notes

Default headers are injected automatically: anthropic-version: 2023-06-01.

Continue to Providers And Models when you still need the broader chooser page.
Continue to Provider Guides for the full built-in provider matrix.
Continue to Provider Recipes for representative rollout recipes.
Continue to Configuration Patterns for the shared provider-profile shape.

Overview

Get Started

Use Loong

Build On Loong

Reference

Anthropic

Anthropic

At A Glance

Minimal Config

Verify It

Auth And Routing Contract

Operator Notes

​Anthropic

​At A Glance

​Minimal Config

​Verify It

​Auth And Routing Contract

​Operator Notes

​Related Docs

Anthropic

At A Glance

Minimal Config

Verify It

Auth And Routing Contract

Operator Notes

Related Docs