{"record":{"id":"5b5f1f7ac52def3e","repo":"googleapis/mcp-toolbox","slug":"toolbox-failed-to-initialize-w","errorCode":null,"errorMessage":"toolbox failed to initialize: %w","messagePattern":"toolbox failed to initialize: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"cmd/internal/serve/command.go","lineNumber":77,"sourceCode":"\t\t\topts.Logger.DebugContext(sCtx, \"Received SIGINT signal to shutdown.\")\n\t\tcase syscall.SIGTERM:\n\t\t\topts.Logger.DebugContext(sCtx, \"Received SIGTERM signal to shutdown.\")\n\t\t}\n\t\tcancel()\n\t}(ctx)\n\n\tctx, shutdown, err := opts.Setup(ctx)\n\tif err != nil {\n\t\treturn err\n\t}\n\tdefer func() {\n\t\t_ = shutdown(ctx)\n\t}()\n\n\t// start server\n\ts, err := server.NewServer(ctx, opts.Cfg)\n\tif err != nil {\n\t\terrMsg := fmt.Errorf(\"toolbox failed to initialize: %w\", err)\n\t\topts.Logger.ErrorContext(ctx, errMsg.Error())\n\t\treturn errMsg\n\t}\n\n\tuseTLS := opts.Cfg.CertFile != \"\" || opts.Cfg.KeyFile != \"\"\n\tprotocol := \"http\"\n\tif useTLS {\n\t\tprotocol = \"https\"\n\t}\n\n\t// run server in background\n\tsrvErr := make(chan error, 1)\n\tif opts.Cfg.Stdio {\n\t\tgo func() {\n\t\t\tdefer close(srvErr)\n\t\t\terr = s.ServeStdio(ctx, opts.IOStreams.In, opts.IOStreams.Out)\n\t\t\tif err != nil {\n\t\t\t\tsrvErr <- err","sourceCodeStart":59,"sourceCodeEnd":95,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/cmd/internal/serve/command.go#L59-L95","documentation":"runServe calls server.NewServer(ctx, opts.Cfg) to assemble the toolbox server (sources, tools, auth, manifests). Any initialization failure — invalid source config, tool initialization error, duplicate tool names, etc. — is wrapped with this message and the serve command exits.","triggerScenarios":"server.NewServer fails: a source fails to connect/authenticate during Initialize, a tool's Initialize errors, or config validation fails.","commonSituations":"Bad database connection string, missing DB password env var, unreachable database host, invalid YAML tool definitions, or unsupported tool type in the config file.","solutions":["Inspect the wrapped root cause — it names the specific source/tool that failed","Verify all source connection strings, credentials, and env vars resolve correctly","Test database connectivity manually (psql/mysql client, etc.) before starting toolbox","Validate the tools config YAML structure against the documented schema"],"exampleFix":"// before\nsources:\n  my-pg:\n    kind: postgres\n    host: db.internal  # unreachable\n    port: 5432\n    database: mydb\n    user: app\n    password: ${DB_PASS}\n// after\nsources:\n  my-pg:\n    kind: postgres\n    host: localhost\n    port: 5432\n    database: mydb\n    user: app\n    password: ${DB_PASS}","handlingStrategy":"try-catch","validationCode":"// verify connectivity before starting toolbox\nnc -zv $DB_HOST $DB_PORT || echo \"database unreachable\"\n# and validate the config file parses:\n./toolbox --tools-file tools.yaml --dry-run 2>/dev/null || true","typeGuard":null,"tryCatchPattern":"s, err := server.NewServer(ctx, cfg)\nif err != nil {\n    return fmt.Errorf(\"toolbox failed to initialize: %w\", err)\n}","preventionTips":["Validate source configs and credentials in CI before deployment","Smoke-test DB connectivity from the deployment environment","Keep env var substitutions (${VAR}) defined in the runtime environment"],"tags":["server","initialization","configuration","database"],"backgroundTag":"server-init-failed","analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}