I Almost Hand-Rolled JSON-RPC for an MCP Server. Eight Tools Later I'm Glad I Di
On 18 July, a Dev.to author reported nearly hand-rolling JSON-RPC for an MCP server before deciding against it. Eight tools later, they were glad they had. Other Dev.to coverage provides context. “What MCP Solves and What It Deliberately Does Not” and “MCP is APIs for Agents” describe the model. Articles on adding MCP to a Quarkus app and building an MCP server in Python address implementation and tool design. Further posts cover headless Salesforce access for agents, MCPNest’s first month and features, Ahrefs MCP Server setup for Claude and Codex, and a warning that an MCP server may be vulnerable. This remains one developer’s account within a broader cluster of Dev.to MCP coverage. No second source confirms the experience.
Assuming the account is factual, impact is 0%. Developers considering an MCP server get a practical caution against implementing the protocol layer by hand. The report describes no product release, policy change, security incident, or measurable shift for users.
Watch for published code, implementation details, or independent accounts showing what replaced the hand-rolled JSON-RPC approach and how it performed across all eight tools. Until then, the lesson is useful and anecdotal.
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