Anthropic()
Claude models direct from Anthropic, with your own API key. Costs go direct to the vendor at their rates — no markup, nothing on your Axon balance.
export default defineProfile({
providers: [Anthropic()],
})
Serves anthropic/*.
Credentials
Set the environment variable, or pass key on the declaration:
ANTHROPIC_API_KEY=...
providers: [Anthropic({ key: process.env.MY_OWN_VAR })]
Unlike OpenRouter() and
Codex(), direct providers are not vaulted yet: the
credential comes from the agent's environment. A deployed agent needs it set as a runtime
secret, or should use a vaulted route instead.
Declaring this provider without the variable set is not an error. The failure comes when something tries to use it, and names the variable you need.
Options
Anthropic(options?: ProviderOptions)
| Option | Default | Description |
|---|---|---|
key | ANTHROPIC_API_KEY | Your own credential, passed directly |
url | the provider's API | Endpoint override |
slots | unbounded | Ceiling on concurrent calls a fanned-out role may spend here |
Model ids
Anthropic's own ids replace the version dot with a dash — the canonical
anthropic/claude-sonnet-4.6 is claude-sonnet-4-6 here:
export default defineAgent({ model: "anthropic:claude-sonnet-4-6" })
The translation is automatic when a role resolves; you only write this form when pinning.
Not the same as Claude Code
This is the Anthropic API, billed per token against your API key. A Claude Pro or Max subscription is a different product and cannot be used as an inference source here.