googleapis/mcp-toolbox · error

invalid value for delay: %w

Error message

invalid value for delay: %w

What it means

Initialize failed to parse the tool's `delay` field with time.ParseDuration — the string is not a valid Go duration (e.g. missing unit, wrong format like '3 s' or 'seconds').

Source

Thrown at internal/tools/cloudsql/cloudsqlwaitforoperation/cloudsqlwaitforoperation.go:132

func (cfg Config) ToolConfigType() string {
	return resourceType
}

// Initialize initializes the tool from the configuration.
func (cfg Config) Initialize(context.Context) (tools.Tool, error) {

	if cfg.Description == "" {
		cfg.Description = "This will poll on operations API until the operation is done. For checking operation status we need projectId and operationId. Once instance is created give follow up steps on how to use the variables to bring data plane MCP server up in local and remote setup."
	}

	var delay time.Duration
	if cfg.Delay == "" {
		delay = 3 * time.Second
	} else {
		var err error
		delay, err = time.ParseDuration(cfg.Delay)
		if err != nil {
			return nil, fmt.Errorf("invalid value for delay: %w", err)
		}
	}

	var maxDelay time.Duration
	if cfg.MaxDelay == "" {
		maxDelay = 4 * time.Minute
	} else {
		var err error
		maxDelay, err = time.ParseDuration(cfg.MaxDelay)
		if err != nil {
			return nil, fmt.Errorf("invalid value for maxDelay: %w", err)
		}
	}

	multiplier := cfg.Multiplier
	if multiplier == 0 {
		multiplier = 2.0
	}

View on GitHub (pinned to 8cc6e09de2)

Solutions

1. Set delay to a valid duration string such as 3s or 500ms
2. Check for typos and missing time units
3. Omit delay to use the 3s default

When it happens

Trigger: Thrown at internal/tools/cloudsql/cloudsqlwaitforoperation/cloudsqlwaitforoperation.go:132 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of googleapis/mcp-toolbox@8cc6e09de2 (2026-09-05). Data as JSON: /api/errors/bc6a0941f783c233. Report an issue: GitHub.