2447 Add MCP client component with call tool action and SSE/Streamable HTTP connection support#4528
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Pull request overview
This PR adds a new MCP Client component that can connect to external MCP servers (via SSE or Streamable HTTP), expose MCP tools to the AI Agent, and call MCP tools directly via an action. It also introduces a new platform-level function type to let tool cluster elements provide Spring AI ToolCallbackProviders.
Changes:
- Add
mcp-clientcomponent module with connection, “Call Tool” action, and “MCP Server Tools” cluster element. - Introduce
ToolCallbackProviderFunctionand update platform/AI-agent code paths to handle tool-callback providers. - Add MCP SDK + Spring AI MCP dependencies and component definition snapshot test resources.
Reviewed changes
Copilot reviewed 14 out of 15 changed files in this pull request and generated 6 comments.
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| File | Description |
|---|---|
| settings.gradle.kts | Registers the new mcp-client Gradle module. |
| ClusterElementDefinitionServiceImpl.java | Allows tool execution to handle ToolCallbackProviderFunction in addition to ToolFunction. |
| ToolCallbackProviderFunction.java | Adds new platform API for cluster elements that return a ToolCallbackProvider. |
| ParametersFactory.java | Adds convenience overload for creating Parameters from ComponentConnection. |
| mcp-client_v1.json | Snapshot of the generated component definition for tests. |
| McpClientComponentHandlerTest.java | Verifies generated definition matches snapshot. |
| mcp-client.svg | Adds component icon asset. |
| McpClientUtils.java | Implements MCP client creation, auth header customization, tool discovery, and schema-to-properties mapping. |
| McpClientConstants.java | Centralizes MCP client constant keys. |
| McpClientConnection.java | Defines connection + authorization schema for the component. |
| McpClientTool.java | Implements a tool cluster element that exposes MCP tools to the AI Agent. |
| McpClientCallToolAction.java | Implements an action to call a specific MCP tool. |
| McpClientComponentHandler.java | Wires connection/actions/cluster elements into the component definition. |
| build.gradle.kts (mcp-client) | Declares MCP + Spring AI MCP dependencies. |
| AbstractAiAgentChatAction.java | Updates AI Agent tool callback creation to support ToolCallbackProviderFunction. |
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...omponent-api/src/main/java/com/bytechef/platform/component/definition/ParametersFactory.java
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...c/main/java/com/bytechef/platform/component/service/ClusterElementDefinitionServiceImpl.java
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...mponents/mcp-client/src/main/java/com/bytechef/component/mcp/client/util/McpClientUtils.java
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...mponents/mcp-client/src/main/java/com/bytechef/component/mcp/client/util/McpClientUtils.java
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...p-client/src/main/java/com/bytechef/component/mcp/client/connection/McpClientConnection.java
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...p-client/src/main/java/com/bytechef/component/mcp/client/connection/McpClientConnection.java
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…e HTTP connection support Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com