github/github-mcp-server · error

%s must be one of: %s

Error message

%s must be one of: %s

What it means

Error "%s must be one of: %s" thrown in github/github-mcp-server.

Source

Thrown at cmd/mcpcurl/main.go:274

		isRequired := slices.Contains(tool.InputSchema.Required, name)

		// Enhance description to indicate if parameter is optional
		description := prop.Description
		if !isRequired {
			description += " (optional)"
		}

		switch prop.Type {
		case "string":
			cmd.Flags().String(name, "", description)
			if len(prop.Enum) > 0 {
				// Add validation in PreRun for enum values
				cmd.PreRunE = func(cmd *cobra.Command, _ []string) error {
					for flagName, property := range tool.InputSchema.Properties {
						if len(property.Enum) > 0 {
							value, _ := cmd.Flags().GetString(flagName)
							if value != "" && !slices.Contains(property.Enum, value) {
								return fmt.Errorf("%s must be one of: %s", flagName, strings.Join(property.Enum, ", "))
							}
						}
					}
					return nil
				}
			}
		case "number":
			cmd.Flags().Float64(name, 0, description)
		case "integer":
			cmd.Flags().Int64(name, 0, description)
		case "boolean":
			cmd.Flags().Bool(name, false, description)
		case "array":
			if prop.Items != nil {
				switch prop.Items.Type {
				case "string":
					cmd.Flags().StringSlice(name, []string{}, description)
				case "object":

View on GitHub (pinned to 0ea1f775a7)

When it happens

Trigger: Thrown at cmd/mcpcurl/main.go:274 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/8af60c0b1014aeb9. Report an issue: GitHub.