René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Pagination is not working for the /tools/list API","articleBody":"**Bug description**\nEven though the implementation uses a loop to fetch tools based on the next cursor value, the API is being called only once and returns all MCP tools (more than 200) in a single response. This indicates that pagination is not functioning as expected.\n\n**Environment**\n- Spring MCP version: LATEST\n- Java version: 17\n\n**Steps to reproduce**\n- Deploy the MCP server with more than 200 tools registered.\n\n- Use the following code snippet to fetch tools:\n```\npublic List\u003cMcpSchema.Tool\u003e listTools(final McpSyncClient mcpSyncClient) {\n    final List\u003cMcpSchema.Tool\u003e tools = new ArrayList\u003c\u003e();\n    String cursor = null;\n    do {\n        final ListToolsResult listToolsResult = mcpSyncClient.listTools(cursor);\n        final List\u003cTool\u003e toolList = listToolsResult.tools();\n        log.info(\"toolList size: {}\", toolList.size());\n        tools.addAll(toolList);\n        cursor = listToolsResult.nextCursor();\n    } while (cursor != null);\n    return tools;\n}\n```\n\n- Observe the logs and behavior.\n\n**Expected behavior**\n- The mcpSyncClient.listTools(cursor) API should be called multiple times until all tools are fetched.\n\n- Each API call should return a limited subset of tools (based on page size), and the nextCursor should guide the next request.\n\n- Pagination should be configurable (e.g., pageSize or limit parameter) so users can control how many tools are fetched per request.\n\n**Minimal Complete Reproducible example**\nA minimal example can be created by:\n\n- Setting up an MCP server with more than 200 registered tools.\n\n- Running the above Java method to fetch tools.\n\n- Observing that only one API call is made (indicating that nextCursor is not working as intended).\n\nObserved result:\n\n- One call to /tools/list returning all tools.\n\nExpected result:\n\n- Multiple paginated calls to /tools/list, each returning a subset of tools until all are fetched.\n\n**Additional questions**\n\n- How many tools are expected to be fetched in a single request by default?\n\n- Is this page size configurable from client-side?\n","author":{"url":"https://github.com/SurajPandurangaJannu","@type":"Person","name":"SurajPandurangaJannu"},"datePublished":"2025-10-10T13:59:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/615/java-sdk/issues/615"}