googleapis/mcp-toolbox · error

unable to connect successfully: %w

Error message

unable to connect successfully: %w

What it means

PingContext failed on the newly opened Snowflake connection during Initialize; the driver connected enough to open a handle but the round-trip verification failed, so db is closed and the source is rejected.

Source

Thrown at internal/sources/snowflake/snowflake.go:72

	Schema    string `yaml:"schema" validate:"required"`
	Warehouse string `yaml:"warehouse"`
	Role      string `yaml:"role"`
}

func (r Config) SourceConfigType() string {
	return SourceType
}

func (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {
	db, err := initSnowflakeConnection(ctx, tracer, r.Name, r.Account, r.User, r.Password, r.Database, r.Schema, r.Warehouse, r.Role)
	if err != nil {
		return nil, fmt.Errorf("unable to create connection: %w", err)
	}

	err = db.PingContext(ctx)
	if err != nil {
		db.Close()
		return nil, fmt.Errorf("unable to connect successfully: %w", err)
	}

	s := &Source{
		Config: r,
		DB:     db,
	}
	return s, nil
}

var _ sources.Source = &Source{}

type Source struct {
	Config
	DB *sqlx.DB
}

func (s *Source) IsReadOnly() bool {
	return false

View on GitHub (pinned to 8cc6e09de2)

Solutions

1. Verify account identifier, user, password, database and schema values
2. Check warehouse/role assignments for the user
3. Confirm network access and Snowflake service status

When it happens

Trigger: Thrown at internal/sources/snowflake/snowflake.go:72 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/3b1e96dcd090ba85. Report an issue: GitHub.