Inference provider targets

Inference provider targets give you explicit control over the endpoint, model mappings, and operations for a model provider. Use a provider configuration when you need to customize which models are available, set per-model token limits, configure path rewriting, or connect to a provider that doesn’t have a built-in connector.

Target configuration

The target configuration for an inference provider target uses the following structure:

{
    "inference": {
        "provider": {
            "endpoint": "https://api.openai.com",
            "operations": [
                {
                    "path": "/v1/chat/completions",
                    "models": [
                        {"model": "gpt-5.5"},
                        {"model": "gpt-5.4"},
                        {"model": "gpt-5.4-mini"}
                    ]
                },
                {
                    "path": "/v1/responses",
                    "models": [
                        {"model": "gpt-5.5"},
                        {"model": "gpt-5.4"}
                    ]
                }
            ]
        }
    }
}

Creating a provider inference target

The following example creates an OpenAI inference target using a provider configuration:

aws bedrock-agentcore-control create-gateway-target --cli-input-json '{
    "gatewayIdentifier": "GATEWAY_ID",
    "name": "openai",
    "targetConfiguration": {
        "inference": {
            "provider": {
                "endpoint": "https://api.openai.com",
                "operations": [
                    {
                        "path": "/v1/chat/completions",
                        "models": [
                            {"model": "gpt-5.5"},
                            {"model": "gpt-5.4"},
                            {"model": "gpt-5.4-mini"}
                        ]
                    },
                    {
                        "path": "/v1/responses",
                        "models": [
                            {"model": "gpt-5.5"},
                            {"model": "gpt-5.4"}
                        ]
                    }
                ]
            }
        }
    },
    "credentialProviderConfigurations": [
        {
            "credentialProviderType": "API_KEY",
            "credentialProvider": {
                "apiKeyCredentialProvider": {
                    "providerArn": "arn:aws:bedrock-agentcore:us-west-2:111122223333:token-vault/default/apikeycredentialprovider/openai-key",
                    "credentialLocation": "HEADER",
                    "credentialParameterName": "Authorization",
                    "credentialPrefix": "Bearer "
                }
            }
        }
    ]
}'

The following example creates a Bedrock inference target with explicit provider configuration and model mapping. The modelMapping configuration with providerPrefix allows clients to use short model names (like claude-opus-4-7) while the gateway translates them to provider-prefixed names (like anthropic.claude-opus-4-7):

aws bedrock-agentcore-control create-gateway-target --cli-input-json '{
    "gatewayIdentifier": "GATEWAY_ID",
    "name": "bedrock",
    "targetConfiguration": {
        "inference": {
            "provider": {
                "endpoint": "https://bedrock-mantle.us-east-1.api.aws",
                "modelMapping": {
                    "providerPrefix": {"strip": true, "separator": "."}
                },
                "operations": [
                    {
                        "path": "/v1/chat/completions",
                        "models": [
                            {"model": "anthropic.claude-opus-*"},
                            {"model": "anthropic.claude-sonnet-*"},
                            {"model": "openai.gpt-oss-*"}
                        ]
                    },
                    {
                        "path": "/v1/messages",
                        "providerPath": "/anthropic/v1/messages",
                        "models": [
                            {"model": "anthropic.claude-opus-*"},
                            {"model": "anthropic.claude-sonnet-*"}
                        ]
                    }
                ]
            }
        }
    },
    "credentialProviderConfigurations": [
        {"credentialProviderType": "GATEWAY_IAM_ROLE"}
    ]
}'

Invoking a provider inference target

To invoke an inference target, send requests to the gateway’s /inference path. The gateway routes each request to the correct target based on the model field in the request body. The model value can be either a plain model ID (for example, gpt-5.5) or a target-qualified model ID in the form {targetName}/{modelId} (for example, openai/gpt-5.5). For details on how the model value is matched to a target, see Model-based routing.

The URL format is:

https://{gatewayId}.gateway.bedrock-agentcore.{region}.amazonaws.com/inference/{path}

Replace {path} with the inference operation path (for example, v1/chat/completions, v1/responses, or v1/messages).

Using the OpenAI SDK

Set the gateway’s /inference/v1 path as the base_url:

from openai import OpenAI

client = OpenAI(
    base_url="https://<gateway-id>.gateway.bedrock-agentcore.us-west-2.amazonaws.com/inference/v1",
    api_key="<gateway-auth-token>"
)

response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{"role": "user", "content": "Hello!"}]
)

Using the Anthropic SDK

Set the gateway’s /inference path as the base_url:

import anthropic

client = anthropic.Anthropic(
    base_url="https://<gateway-id>.gateway.bedrock-agentcore.us-west-2.amazonaws.com/inference",
    api_key="<gateway-auth-token>"
)

response = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello!"}]
)

Using awscurl

awscurl --service bedrock-agentcore --region us-west-2 -X POST \
    "https://<gateway-id>.gateway.bedrock-agentcore.us-west-2.amazonaws.com/inference/v1/chat/completions" \
    -H "Content-Type: application/json" \
    -d '{"model": "gpt-5.5", "messages": [{"role": "user", "content": "Hello!"}]}'

Qualified model routing

When multiple targets serve the same model, prefix the model ID with the target name to route to a specific provider:

# Route explicitly to the "bedrock" target
response = client.chat.completions.create(
    model="bedrock/claude-opus-4-7",
    messages=[{"role": "user", "content": "Hello!"}]
)

Model-based routing

The gateway routes inference requests based on the model field in the request body:

Streaming

Streaming follows the OpenAI SSE convention. Set "stream": true in the request body, and the gateway passes through the SSE stream from the provider without transformation:

stream = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{"role": "user", "content": "Write a story."}],
    stream=True
)

for chunk in stream:
    print(chunk.choices[0].delta.content, end="")

Outbound authorization

Inference provider targets support the following outbound authorization types: