Installing the following exoquery mcp config throws error on Cursor (latest version)
{
"mcpServers": {
"exoquery": {
"url": "https://backend.exoquery.com/mcp"
}
}
}Error
2026-01-07 17:58:57.422 [info] Client closed for command
2026-01-07 17:58:57.423 [warning] Error connecting to streamableHttp server, falling back to SSE: MCP error -32603: Unrecognized field "form" (class io.modelcontextprotocol.spec.McpSchema$ClientCapabilities$Elicitation), not marked as ignorable (0 known properties: ])
at [Source: UNKNOWN; byte offset: #UNKNOWN] (through reference chain: io.modelcontextprotocol.spec.McpSchema$InitializeRequest["capabilities"]->io.modelcontextprotocol.spec.McpSchema$ClientCapabilities["elicitation"]->io.modelcontextprotocol.spec.McpSchema$ClientCapabilities$Elicitation["form"])
2026-01-07 17:58:57.423 [warning] Error connecting to streamableHttp server, falling back to SSE: MCP error -32603: Unrecognized field "form" (class io.modelcontextprotocol.spec.McpSchema$ClientCapabilities$Elicitation), not marked as ignorable (0 known properties: ])
at [Source: UNKNOWN; byte offset: #UNKNOWN] (through reference chain: io.modelcontextprotocol.spec.McpSchema$InitializeRequest["capabilities"]->io.modelcontextprotocol.spec.McpSchema$ClientCapabilities["elicitation"]->io.modelcontextprotocol.spec.McpSchema$ClientCapabilities$Elicitation["form"])
2026-01-07 17:58:57.423 [info] Connecting to SSE server
2026-01-07 17:58:57.429 [info] No stored tokens found
2026-01-07 17:58:57.718 [error] Client error for command SSE error: Non-200 status code (403)
2026-01-07 17:58:57.719 [error] Error connecting to SSE server after fallback: SSE error: Non-200 status code (403)
2026-01-07 17:58:57.719 [info] Client closed for command
AI Analysis says the following
This means the exoquery server is using an older version of the Kotlin MCP SDK that doesn't have the form field in the Elicitation capability class.
Installing the following exoquery mcp config throws error on Cursor (latest version)
{ "mcpServers": { "exoquery": { "url": "https://backend.exoquery.com/mcp" } } }Error
AI Analysis says the following