🐛 MCP Tools return "Not connected" in Simulation / Batch Testing MCP tools do not work in LLM Simulation and Batch Testing. Every MCP tool call returns

"Not connected"

— no matter the tool, no matter the parameters. My setup: Single-prompt agent (restaurant booking assistant) with a custom MCP server (~10 tools: searchReservationsByPhone, getDaySlots, createReservation, updateReservation, cancelReservation, getWeeklyAvailability, getMenuOverview, getCompanyInfo, etc.) What works: ✅ Production calls — all MCP tools execute correctly ✅ UI Chat Test — MCP handshake + tool execution works ✅ Voice Test — no issues ✅ Dynamic variables resolve correctly everywhere What's broken: ❌ LLM Simulation Testing — every MCP tool returns

"Not connected"

❌ Batch Simulation Testing — same across all test cases This is not an MCP server issue. The server is reachable, stable, and works in every other context. The simulation runner simply cannot execute MCP tool calls. I built 10 test cases covering reservation flows, modifications, cancellations, menu queries, and edge cases — all fail because every tool returns

"Not connected"

. This makes simulation and batch testing completely unusable for anyone using MCP. Can the team please confirm if this is a known limitation or a bug? Is a fix on the roadmap? This is a serious blocker for building production-grade agents with MCP. Thanks 🙏 https://cdn.discordapp.com/attachments/1470904019168792637/1470904020507033692/WhatsApp_Image_2026-02-10_at_23.07.06.jpeg?ex=698cfd9e&is=698bac1e&hm=e11dc85a115edb1f9d3158605fc802723b06feebe80c2d068625f3ec9fd0e4e1&

Hi @frafat

PERFECT! Thxx!

Update: We have just fixed this MCP issue. Let me know if the still seeing the issue. Thanks! @frafat