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openclaw/docs/providers/anthropic.md
2026-04-28 08:13:21 +01:00

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---
summary: "Use Anthropic Claude via API keys or Claude CLI in OpenClaw"
read_when:
- You want to use Anthropic models in OpenClaw
title: "Anthropic"
---
Anthropic builds the **Claude** model family. OpenClaw supports two auth routes:
- **API key** — direct Anthropic API access with usage-based billing (`anthropic/*` models)
- **Claude CLI** — reuse an existing Claude CLI login on the same host
<Warning>
Anthropic staff told us OpenClaw-style Claude CLI usage is allowed again, so
OpenClaw treats Claude CLI reuse and `claude -p` usage as sanctioned unless
Anthropic publishes a new policy.
For long-lived gateway hosts, Anthropic API keys are still the clearest and
most predictable production path.
Anthropic's current public docs:
- [Claude Code CLI reference](https://code.claude.com/docs/en/cli-reference)
- [Claude Agent SDK overview](https://platform.claude.com/docs/en/agent-sdk/overview)
- [Using Claude Code with your Pro or Max plan](https://support.claude.com/en/articles/11145838-using-claude-code-with-your-pro-or-max-plan)
- [Using Claude Code with your Team or Enterprise plan](https://support.anthropic.com/en/articles/11845131-using-claude-code-with-your-team-or-enterprise-plan/)
</Warning>
## Getting started
<Tabs>
<Tab title="API key">
**Best for:** standard API access and usage-based billing.
<Steps>
<Step title="Get your API key">
Create an API key in the [Anthropic Console](https://console.anthropic.com/).
</Step>
<Step title="Run onboarding">
```bash
openclaw onboard
# choose: Anthropic API key
```
Or pass the key directly:
```bash
openclaw onboard --anthropic-api-key "$ANTHROPIC_API_KEY"
```
</Step>
<Step title="Verify the model is available">
```bash
openclaw models list --provider anthropic
```
</Step>
</Steps>
### Config example
```json5
{
env: { ANTHROPIC_API_KEY: "sk-ant-..." },
agents: { defaults: { model: { primary: "anthropic/claude-opus-4-6" } } },
}
```
</Tab>
<Tab title="Claude CLI">
**Best for:** reusing an existing Claude CLI login without a separate API key.
<Steps>
<Step title="Ensure Claude CLI is installed and logged in">
Verify with:
```bash
claude --version
```
</Step>
<Step title="Run onboarding">
```bash
openclaw onboard
# choose: Claude CLI
```
OpenClaw detects and reuses the existing Claude CLI credentials.
</Step>
<Step title="Verify the model is available">
```bash
openclaw models list --provider anthropic
```
</Step>
</Steps>
<Note>
Setup and runtime details for the Claude CLI backend are in [CLI Backends](/gateway/cli-backends).
</Note>
### Config example
Prefer the canonical Anthropic model ref plus a CLI runtime override:
```json5
{
agents: {
defaults: {
model: { primary: "anthropic/claude-opus-4-7" },
agentRuntime: { id: "claude-cli" },
},
},
}
```
Legacy `claude-cli/claude-opus-4-7` model refs still work for
compatibility, but new config should keep provider/model selection as
`anthropic/*` and put the execution backend in `agentRuntime.id`.
<Tip>
If you want the clearest billing path, use an Anthropic API key instead. OpenClaw also supports subscription-style options from [OpenAI Codex](/providers/openai), [Qwen Cloud](/providers/qwen), [MiniMax](/providers/minimax), and [Z.AI / GLM](/providers/glm).
</Tip>
</Tab>
</Tabs>
## Thinking defaults (Claude 4.6)
Claude 4.6 models default to `adaptive` thinking in OpenClaw when no explicit thinking level is set.
Override per-message with `/think:<level>` or in model params:
```json5
{
agents: {
defaults: {
models: {
"anthropic/claude-opus-4-6": {
params: { thinking: "adaptive" },
},
},
},
},
}
```
<Note>
Related Anthropic docs:
- [Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/adaptive-thinking)
- [Extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking)
</Note>
## Prompt caching
OpenClaw supports Anthropic's prompt caching feature for API-key auth.
| Value | Cache duration | Description |
| ------------------- | -------------- | -------------------------------------- |
| `"short"` (default) | 5 minutes | Applied automatically for API-key auth |
| `"long"` | 1 hour | Extended cache |
| `"none"` | No caching | Disable prompt caching |
```json5
{
agents: {
defaults: {
models: {
"anthropic/claude-opus-4-6": {
params: { cacheRetention: "long" },
},
},
},
},
}
```
<AccordionGroup>
<Accordion title="Per-agent cache overrides">
Use model-level params as your baseline, then override specific agents via `agents.list[].params`:
```json5
{
agents: {
defaults: {
model: { primary: "anthropic/claude-opus-4-6" },
models: {
"anthropic/claude-opus-4-6": {
params: { cacheRetention: "long" },
},
},
},
list: [
{ id: "research", default: true },
{ id: "alerts", params: { cacheRetention: "none" } },
],
},
}
```
Config merge order:
1. `agents.defaults.models["provider/model"].params`
2. `agents.list[].params` (matching `id`, overrides by key)
This lets one agent keep a long-lived cache while another agent on the same model disables caching for bursty/low-reuse traffic.
</Accordion>
<Accordion title="Bedrock Claude notes">
- Anthropic Claude models on Bedrock (`amazon-bedrock/*anthropic.claude*`) accept `cacheRetention` pass-through when configured.
- Non-Anthropic Bedrock models are forced to `cacheRetention: "none"` at runtime.
- API-key smart defaults also seed `cacheRetention: "short"` for Claude-on-Bedrock refs when no explicit value is set.
</Accordion>
</AccordionGroup>
## Advanced configuration
<AccordionGroup>
<Accordion title="Fast mode">
OpenClaw's shared `/fast` toggle supports direct Anthropic traffic (API-key and OAuth to `api.anthropic.com`).
| Command | Maps to |
|---------|---------|
| `/fast on` | `service_tier: "auto"` |
| `/fast off` | `service_tier: "standard_only"` |
```json5
{
agents: {
defaults: {
models: {
"anthropic/claude-sonnet-4-6": {
params: { fastMode: true },
},
},
},
},
}
```
<Note>
- Only injected for direct `api.anthropic.com` requests. Proxy routes leave `service_tier` untouched.
- Explicit `serviceTier` or `service_tier` params override `/fast` when both are set.
- On accounts without Priority Tier capacity, `service_tier: "auto"` may resolve to `standard`.
</Note>
</Accordion>
<Accordion title="Media understanding (image and PDF)">
The bundled Anthropic plugin registers image and PDF understanding. OpenClaw
auto-resolves media capabilities from the configured Anthropic auth — no
additional config is needed.
| Property | Value |
| -------------- | -------------------- |
| Default model | `claude-opus-4-6` |
| Supported input | Images, PDF documents |
When an image or PDF is attached to a conversation, OpenClaw automatically
routes it through the Anthropic media understanding provider.
</Accordion>
<Accordion title="1M context window (beta)">
Anthropic's 1M context window is beta-gated. Enable it per model:
```json5
{
agents: {
defaults: {
models: {
"anthropic/claude-opus-4-6": {
params: { context1m: true },
},
},
},
},
}
```
OpenClaw maps this to `anthropic-beta: context-1m-2025-08-07` on requests.
`params.context1m: true` also applies to the Claude CLI backend
(`claude-cli/*`) for eligible Opus and Sonnet models, expanding the runtime
context window for those CLI sessions to match the direct-API behavior.
<Warning>
Requires long-context access on your Anthropic credential. Legacy token auth (`sk-ant-oat-*`) is rejected for 1M context requests — OpenClaw logs a warning and falls back to the standard context window.
</Warning>
</Accordion>
<Accordion title="Claude Opus 4.7 1M context">
`anthropic/claude-opus-4.7` and its `claude-cli` variant have a 1M context
window by default — no `params.context1m: true` needed.
</Accordion>
</AccordionGroup>
## Troubleshooting
<AccordionGroup>
<Accordion title="401 errors / token suddenly invalid">
Anthropic token auth expires and can be revoked. For new setups, use an Anthropic API key instead.
</Accordion>
<Accordion title='No API key found for provider "anthropic"'>
Anthropic auth is **per agent** — new agents do not inherit the main agent's keys. Re-run onboarding for that agent (or configure an API key on the gateway host), then verify with `openclaw models status`.
</Accordion>
<Accordion title='No credentials found for profile "anthropic:default"'>
Run `openclaw models status` to see which auth profile is active. Re-run onboarding, or configure an API key for that profile path.
</Accordion>
<Accordion title="No available auth profile (all in cooldown)">
Check `openclaw models status --json` for `auth.unusableProfiles`. Anthropic rate-limit cooldowns can be model-scoped, so a sibling Anthropic model may still be usable. Add another Anthropic profile or wait for cooldown.
</Accordion>
</AccordionGroup>
<Note>
More help: [Troubleshooting](/help/troubleshooting) and [FAQ](/help/faq).
</Note>
## Related
<CardGroup cols={2}>
<Card title="Model selection" href="/concepts/model-providers" icon="layers">
Choosing providers, model refs, and failover behavior.
</Card>
<Card title="CLI backends" href="/gateway/cli-backends" icon="terminal">
Claude CLI backend setup and runtime details.
</Card>
<Card title="Prompt caching" href="/reference/prompt-caching" icon="database">
How prompt caching works across providers.
</Card>
<Card title="OAuth and auth" href="/gateway/authentication" icon="key">
Auth details and credential reuse rules.
</Card>
</CardGroup>