openclaw
Version:
Multi-channel AI gateway with extensible messaging integrations
236 lines (192 loc) • 9.62 kB
Markdown
---
summary: "Use Amazon Bedrock Mantle OpenAI-compatible and Claude Messages models with OpenClaw"
read_when:
- You want to use Bedrock Mantle hosted OSS models with OpenClaw
- You need the Mantle OpenAI-compatible endpoint for GPT-OSS, Qwen, Kimi, or GLM
- You want to use Claude Opus 5, Sonnet 5, or Mythos 5 through Amazon Bedrock Mantle
title: "Amazon Bedrock Mantle"
---
OpenClaw includes a bundled **Amazon Bedrock Mantle** provider that connects to
the Mantle OpenAI-compatible endpoint. Mantle hosts open-source and
third-party models (GPT-OSS, Qwen, Kimi, GLM, and similar) through a standard
`/v1/chat/completions` surface backed by Bedrock infrastructure. Mantle also
exposes Anthropic Claude models through an Anthropic Messages route.
| Property | Value |
| -------------- | -------------------------------------------------------------------------------------- |
| Provider ID | `amazon-bedrock-mantle` |
| API | `openai-completions` for discovered OSS models, `anthropic-messages` for Claude models |
| Auth | Explicit `AWS_BEARER_TOKEN_BEDROCK` or IAM credential-chain bearer-token generation |
| Default region | `us-east-1` (override with `AWS_REGION` or `AWS_DEFAULT_REGION`) |
## Getting started
Choose your preferred auth method and follow the setup steps.
<Tabs>
<Tab title="Explicit bearer token">
**Best for:** environments where you already have a Mantle bearer token.
<Steps>
<Step title="Set the bearer token on the gateway host">
```bash
export AWS_BEARER_TOKEN_BEDROCK="..."
```
Optionally set a region (defaults to `us-east-1`):
```bash
export AWS_REGION="us-west-2"
```
</Step>
<Step title="Verify models are discovered">
```bash
openclaw models list
```
Discovered models appear under the `amazon-bedrock-mantle` provider. No
additional config is required unless you want to override defaults.
</Step>
</Steps>
</Tab>
<Tab title="IAM credentials">
**Best for:** using AWS SDK-compatible credentials (shared config, SSO, web identity, instance or task roles).
<Steps>
<Step title="Configure AWS credentials on the gateway host">
Any AWS SDK-compatible auth source works:
```bash
export AWS_PROFILE="default"
export AWS_REGION="us-west-2"
```
</Step>
<Step title="Verify models are discovered">
```bash
openclaw models list
```
OpenClaw generates a Mantle bearer token from the credential chain automatically.
</Step>
</Steps>
<Tip>
When `AWS_BEARER_TOKEN_BEDROCK` is not set, OpenClaw mints the bearer token for you from the AWS default credential chain, including shared credentials/config profiles, SSO, web identity, and instance or task roles.
</Tip>
</Tab>
</Tabs>
## Automatic model discovery
When `AWS_BEARER_TOKEN_BEDROCK` is set, OpenClaw uses it directly. Otherwise,
OpenClaw attempts to generate a Mantle bearer token from the AWS default
credential chain. It then discovers available Mantle models by querying the
region's `/v1/models` endpoint.
| Behavior | Detail |
| ----------------- | ------------------------------------------------------------------------------------ |
| Discovery cache | Results cached for 1 hour per region; a fetch failure returns the last cached result |
| IAM token refresh | Every 2 hours, cached per region |
To keep the Mantle plugin enabled but suppress automatic discovery and IAM
bearer-token generation, disable the plugin-owned discovery toggle:
```bash
openclaw config set plugins.entries.amazon-bedrock-mantle.config.discovery.enabled false
```
<Note>
The bearer token is the same `AWS_BEARER_TOKEN_BEDROCK` used by the standard [Amazon Bedrock](/providers/bedrock) provider.
</Note>
### Supported regions
`us-east-1`, `us-east-2`, `us-west-2`, `ap-northeast-1`,
`ap-south-1`, `ap-southeast-3`, `eu-central-1`, `eu-west-1`, `eu-west-2`,
`eu-south-1`, `eu-north-1`, `sa-east-1`.
## Manual configuration
If you prefer explicit config instead of auto-discovery:
```json5
{
models: {
providers: {
"amazon-bedrock-mantle": {
baseUrl: "https://bedrock-mantle.us-east-1.api.aws/v1",
api: "openai-completions",
auth: "api-key",
apiKey: "env:AWS_BEARER_TOKEN_BEDROCK",
models: [
{
id: "gpt-oss-120b",
name: "GPT-OSS 120B",
reasoning: true,
input: ["text"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 32000,
maxTokens: 4096,
},
],
},
},
},
}
```
An explicit non-empty `models` list controls membership and replaces discovered
rows, including the Claude rows below. For matching rows, an explicit `input`
wins; when the source row omits `input`, discovery can fill that capability
metadata. Omit `models` to retain the automatic Mantle catalog, or include the
complete Claude model entries you want to use.
## Advanced configuration
<AccordionGroup>
<Accordion title="Reasoning support">
Reasoning support is inferred from model IDs containing patterns like
`thinking`, `reasoner`, `reasoning`, `deepseek.r`, `gpt-oss-120b`, or
`gpt-oss-safeguard-120b`. OpenClaw sets `reasoning: true` automatically for
matching models during discovery.
</Accordion>
<Accordion title="Endpoint unavailability">
If the Mantle endpoint is unavailable, returns no models, or bearer-token
resolution fails, discovery returns an empty result and the implicit
provider is skipped. OpenClaw does not error; other configured providers
continue to work normally.
</Accordion>
<Accordion title="Claude via the Anthropic Messages route">
When automatic discovery owns the model list, OpenClaw appends five Claude
models after a successful lookup, regardless of what `/v1/models` returns:
`amazon-bedrock-mantle/anthropic.claude-opus-5` (Claude Opus 5),
`amazon-bedrock-mantle/anthropic.claude-sonnet-5` (Claude Sonnet 5),
`amazon-bedrock-mantle/anthropic.claude-opus-4-7` (Claude Opus 4.7), and
`amazon-bedrock-mantle/anthropic.claude-mythos-5` (Claude Mythos 5), plus
`amazon-bedrock-mantle/anthropic.claude-mythos-preview` (Claude Mythos
Preview). They use the `anthropic-messages` API surface and stream through
the same bearer-authenticated Anthropic-compatible endpoint
(`<mantle-base>/anthropic`), so the AWS bearer token is not treated like an
Anthropic API key.
Claude Opus 5 publishes a 1,000,000-token context window, 128,000-token
output limit, image input, and `$5/$25` input/output pricing. Adaptive
thinking defaults to `high`; `/think off` disables thinking, and
`/think xhigh|max` uses the model's native effort levels. OpenClaw omits
caller-selected sampling parameters.
Claude Sonnet 5 always uses adaptive thinking and defaults to `high`
effort. `/think off` and `/think minimal` map to `low` because the Mantle
route cannot disable thinking. OpenClaw also omits custom temperature for
Sonnet 5 requests.
Claude Mythos 5 is limited access. It publishes a 1,000,000-token context
window and 128,000-token output limit, always uses adaptive thinking, maps
`/think off` and `/think minimal` to `low`, and omits caller-selected
sampling parameters.
Claude Mythos Preview always requests reasoning, defaulting to `high`
effort when no `/think` level is set (mapped from `xhigh`/`max` down to
`high`, and `minimal` up to `low`). Opus 4.7 on Mantle streams without
model-provided reasoning, and OpenClaw omits its `temperature` parameter
since Opus 4.7 does not accept sampling overrides on this route; Mythos
Preview accepts a `temperature` override normally.
A non-empty explicit `models.providers["amazon-bedrock-mantle"].models`
list controls membership and replaces the complete discovered catalog.
Matching rows can inherit discovered `input` capability only when the source
row omitted it. Omit the list when you want these built-in Claude rows.
</Accordion>
<Accordion title="Relationship to Amazon Bedrock provider">
Bedrock Mantle is a separate provider from the standard
[Amazon Bedrock](/providers/bedrock) provider. Mantle uses an
OpenAI-compatible `/v1` surface for its OSS catalog, while the standard
Bedrock provider uses the native Bedrock Converse API.
Both providers share the same `AWS_BEARER_TOKEN_BEDROCK` credential when
present.
</Accordion>
</AccordionGroup>
## Related
<CardGroup cols={2}>
<Card title="Amazon Bedrock" href="/providers/bedrock" icon="cloud">
Native Bedrock provider for Anthropic Claude, Titan, and other models.
</Card>
<Card title="Model selection" href="/concepts/model-providers" icon="layers">
Choosing providers, model refs, and failover behavior.
</Card>
<Card title="OAuth and auth" href="/gateway/authentication" icon="key">
Auth details and credential reuse rules.
</Card>
<Card title="Troubleshooting" href="/help/troubleshooting" icon="wrench">
Common issues and how to resolve them.
</Card>
</CardGroup>