Generate an optional server/discover request for MCP 2026-07-28 capability discovery.
MCP 2026-07-28 retired the old initialize/initialized handshake. Clients can optionally use server/discover to learn server capabilities, while normal requests are designed to be self-describing.
Build a server/discover JSON-RPC request and required routing metadata for current MCP implementations.
Use MCP Server Discover Request Builder as a focused pre-flight utility while building, reviewing or debugging an MCP integration. Paste the relevant configuration, protocol message, metadata, schema or value into the tool and review the returned findings before the same data reaches a production client or server.
Protocol checks are especially useful when debugging interoperability between different MCP clients, servers, gateways and SDK versions. The tool analyzes the data you provide and does not initiate a live MCP exchange.
A clean result means the input passed the rules implemented by this utility. It does not guarantee application security, protocol interoperability or correct business behavior. Test important integrations against the exact MCP client, SDK, gateway and server versions used in your deployment.