def get_feeds_links(data):
    """Extracts feed urls from the GTFS json description."""
    gtfs_feeds_urls = []

    for feed in data:
        if feed["spec"] != "gtfs":
            continue

        if "urls" in feed and feed["urls"] is not None and feed["urls"]:
            gtfs_feeds_urls.append(feed["urls"]["static_current"])

    return gtfs_feeds_urls