github/github-mcp-server · error

error running server: %w

Error message

error running server: %w

What it means

Error "error running server: %w" thrown in github/github-mcp-server.

Source

Thrown at internal/ghmcp/server.go:389

			in, out = loggedIO, loggedIO
		}

		// enable GitHub errors in the context
		ctx := errors.ContextWithGitHubErrors(ctx)
		errC <- ghServer.Run(ctx, &mcp.IOTransport{Reader: in, Writer: out})
	}()

	// Output github-mcp-server string
	_, _ = fmt.Fprintf(os.Stderr, "GitHub MCP Server running on stdio\n")

	// Wait for shutdown signal
	select {
	case <-ctx.Done():
		logger.Info("shutting down server", "signal", "context done")
	case err := <-errC:
		if err != nil {
			logger.Error("error running server", "error", err)
			return fmt.Errorf("error running server: %w", err)
		}
	}

	return nil
}

// createFeatureChecker returns a FeatureFlagChecker that resolves features
// using the centralized ResolveFeatureFlags function. For the local server,
// features are resolved once at startup from --features CLI flag and insiders mode.
func createFeatureChecker(enabledFeatures []string, insidersMode bool) inventory.FeatureFlagChecker {
	featureSet := github.ResolveFeatureFlags(enabledFeatures, insidersMode)
	return func(_ context.Context, flagName string) (bool, error) {
		return featureSet[flagName], nil
	}
}

func addUserAgentsMiddleware(cfg github.MCPServerConfig, restUATransp *transport.UserAgentTransport, gqlHTTPClient *http.Client) func(next mcp.MethodHandler) mcp.MethodHandler {
	return func(next mcp.MethodHandler) mcp.MethodHandler {

View on GitHub (pinned to 0ea1f775a7)

When it happens

Trigger: Thrown at internal/ghmcp/server.go:389 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of github/github-mcp-server@0ea1f775a7 (2026-08-15). Data as JSON: /api/errors/01b513caac3419cc. Report an issue: GitHub.