[Server Bug] @yepcode/mcp-server-js

Troubleshooting Connection Issues with @yepcode/mcp-server-js

Users are reporting connection problems with the @yepcode/mcp-server-js server, specifically manifesting as "invalid configuration" errors. This prevents successful connections from both local terminals and remote sandboxes like Smithery, impacting development workflows and testing environments.

The Problem: Invalid Configuration Leading to Connection Refusal

The core symptom is the inability to establish a connection to the @yepcode/mcp-server-js server. The error message "invalid configuration" suggests a mismatch between the client's expected configuration and the server's actual configuration. This can arise from various sources, ranging from incompatible versions to incorrect environment settings.

Root Cause: Outdated MCP Installation in Smithery

Community investigation points to an outdated MCP (Management Control Plane) installation within the Smithery sandbox environment. The @yepcode/mcp-server-js server has undergone recent updates, and the older MCP version in Smithery is not compatible with these changes. This incompatibility leads to the "invalid configuration" error and prevents clients from connecting.

Solution: Upgrading the MCP Installation

The primary solution involves updating the MCP installation within the affected environment, such as Smithery. Unfortunately, as a user, you likely don't have direct control over the MCP installation within a hosted environment like Smithery. The responsibility for updating the MCP rests with the Smithery administrators. However, you can verify whether the update has been applied.

To check the MCP version (if accessible), you might look for a version identifier in the Smithery interface or consult the environment's documentation. If the version is significantly older than the latest @yepcode/mcp-server-js release, it's likely the root cause.

In the meantime, consider these temporary workarounds:

• Local Development: If possible, use a local development environment with a compatible MCP version. This will allow you to continue development while the hosted environment is being updated.
• Version Pinning: If feasible, temporarily downgrade your @yepcode/mcp-server-js dependency to a version compatible with the older MCP installation in Smithery. This is a temporary measure, and you should upgrade back to the latest version once Smithery is updated. You can specify a version in your package.json file:

  "dependencies": {
    "@yepcode/mcp-server-js": "1.2.3" // Replace "1.2.3" with a known compatible version
  }
  

After modifying the package.json, run npm install or yarn install to install the specified version.

• Contact Support: Reach out to the Smithery support team to inquire about the MCP update status and estimated completion time.

Practical Tips and Considerations

• Environment Consistency: Ensure that your development, testing, and production environments have consistent MCP versions to avoid unexpected compatibility issues.
• Version Management: Employ robust version management practices for your dependencies, including @yepcode/mcp-server-js, to minimize the risk of incompatibilities.
• Error Reporting: Provide detailed error reports, including relevant configuration information and environment details, when encountering connection problems. This helps developers quickly identify and resolve the underlying issues.
• Stay Updated: Regularly check for updates to @yepcode/mcp-server-js and related components, and apply them promptly to benefit from bug fixes and new features.