# MCP targets MCP targets operate in aggregation mode — the gateway acts as an MCP server whose capabilities combine those of all its MCP targets. Clients see a single consolidated `tools/list` response that includes tools from all attached MCP targets. MCP targets support capability synchronization, semantic tool search, and three-legged OAuth (3LO) at the target level. The following topics describe the MCP target types that you can add to your gateway. **Topics** + [AWS Lambda function targets](gateway-add-target-lambda.md) + [Amazon API Gateway REST API stages as targets](gateway-target-api-gateway.md) + [OpenAPI schema targets](gateway-schema-openapi.md) + [Smithy model targets](gateway-building-smithy-targets.md) + [MCP servers targets](gateway-target-MCPservers.md) + [Built-in templates from integration providers as targets](gateway-target-integrations.md) + [Understand how AgentCore Gateway tools are named](gateway-tool-naming.md)