googleapis/mcp-toolbox · error

invalid integer value: %v

Error message

invalid integer value: %v

What it means

Type-switch default in JSONToFirestoreValue for integerValue: a value tagged integerValue is a string that strconv.ParseInt cannot parse (or a non-numeric JSON type), so it cannot be converted to int64.

Source

Thrown at internal/tools/firestore/util/converter.go:61

					return nil, nil
				case "booleanValue":
					return val, nil
				case "stringValue":
					return val, nil
				case "integerValue":
					// Convert to int64
					switch num := val.(type) {
					case float64:
						return int64(num), nil
					case int:
						return int64(num), nil
					case int64:
						return num, nil
					case string:
						// Parse string representation using strconv for better performance
						i, err := strconv.ParseInt(strings.TrimSpace(num), 10, 64)
						if err != nil {
							return nil, fmt.Errorf("invalid integer value: %v", val)
						}
						return i, nil
					}
					return nil, fmt.Errorf("invalid integer value: %v", val)
				case "doubleValue":
					// Convert to float64
					switch num := val.(type) {
					case float64:
						return num, nil
					case int:
						return float64(num), nil
					case int64:
						return float64(num), nil
					}
					return nil, fmt.Errorf("invalid double value: %v", val)
				case "bytesValue":
					// Decode base64 string to bytes
					if str, ok := val.(string); ok {

View on GitHub (pinned to 8cc6e09de2)

Solutions

1. Send the integer directly as a JSON number instead of a string
2. If it must be a string, ensure it is a well-formed base-10 integer with no units or whitespace beyond padding

When it happens

Trigger: Thrown at internal/tools/firestore/util/converter.go:61 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/88726a17293d67b1. Report an issue: GitHub.