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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.

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What OpenClaw supports

  • Provider: amazon-bedrock-mantle
  • API: openai-completions (OpenAI-compatible)
  • Auth: explicit AWS_BEARER_TOKEN_BEDROCK or IAM credential-chain bearer-token generation
  • Region: AWS_REGION or AWS_DEFAULT_REGION (default: us-east-1)

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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, including shared credentials/config profiles, SSO, web identity, and instance or task roles. It then discovers available Mantle models by querying the region’s /v1/models endpoint. Discovery results are cached for 1 hour, and IAM-derived bearer tokens are refreshed hourly. 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.

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Onboarding

  1. Choose one auth path on the gateway host:
Explicit bearer token: 
export AWS_BEARER_TOKEN_BEDROCK="..."
# Optional (defaults to us-east-1):
export AWS_REGION="us-west-2"
IAM credentials: 
# Any AWS SDK-compatible auth source works here, for example:
export AWS_PROFILE="default"
export AWS_REGION="us-west-2"
  1. Verify models are discovered:
openclaw models list
Discovered models appear under the amazon-bedrock-mantle provider. No additional config is required unless you want to override defaults.

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Manual configuration

If you prefer explicit config instead of auto-discovery: 
{
  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,
          },
        ],
      },
    },
  },
}

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Notes

  • OpenClaw can mint the Mantle bearer token for you from AWS SDK-compatible IAM credentials when AWS_BEARER_TOKEN_BEDROCK is not set.
  • The bearer token is the same AWS_BEARER_TOKEN_BEDROCK used by the standard Amazon Bedrock provider.
  • Reasoning support is inferred from model IDs containing patterns like thinking, reasoner, or gpt-oss-120b.
  • If the Mantle endpoint is unavailable or returns no models, the provider is silently skipped.