René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Missing handler for request type: notifications/initialized","articleBody":"Please do a quick search on GitHub issues first, there might be already a duplicate issue for the one you are about to create.\nIf the bug is trivial, just go ahead and create the issue. Otherwise, please take a few moments and fill in the following sections:\n\n**Bug description**\nI am getting the following errors from my MCP:\n```\nERROR io.modelcontextprotocol.server.transport.HttpServletStatelessServerTransport - Failed to handle request: Missing handler for request type: notifications/initialized\n```\n\n**Environment**\nversion 17.1 of the MCP SDK. Running kotlin\n\n**Steps to reproduce**\nUnable to reproduce - seems like a client is more up to date on the spec than we are but I haven't been able to determine which\n\n**Expected behavior**\nI wouldn't expect anything a client says to my server to fail the protocol. I think we need an additional handler? Maybe I am dumb but in the past when I had this issue for tools et all, I just needed to explicitly say that I don't support them:\n\n```\n    private val SERVER_CAPABILITIES: McpSchema.ServerCapabilities = McpSchema.ServerCapabilities.builder()\n        .prompts(true)\n        .tools(false)\n        .resources(false, false)\n        .completions()\n        .build()\n```\n\nhowever there is not a \"notifications\" capability\n\n**Minimal Complete Reproducible example**\nUnable to reproduce right now. I am guessing some update was made to MCP which we don't have yet in 17.1\n","author":{"url":"https://github.com/woweow","@type":"Person","name":"woweow"},"datePublished":"2026-02-09T18:14:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/777/java-sdk/issues/777"}