EdgeScript menyediakan berbagai fungsi bawaan yang dikelompokkan dalam beberapa kategori, seperti manipulasi string, pemrosesan request, kriptografi, dan lainnya.
| Kategori fungsi | Fungsi |
| Fungsi logika | and, or, not, eq, ne, dan null |
| Fungsi numerik | add, sub, mul, div, mod, gt, ge, lt, le, floor, dan ceil |
| Fungsi string | substr, concat, upper, lower, len, byte, match_re, capture_re, gsub_re, split, split_as_key, tohex, tostring, tochar, reverse, find, format, tobin, dan trim |
| Fungsi dictionary | set, get, foreach, dan del |
| Fungsi pemrosesan request | add_req_header, del_req_header, add_rsp_header, del_rsp_header, encode_args, decode_args, rewrite, say, print, exit, get_rsp_header, dan add_rsp_cookie |
| Fungsi throttling | limit_rate_after dan limit_rate |
| Fungsi cache | set_cache_ttl |
| Fungsi waktu | today, time, now, localtime, utctime, cookie_time, http_time, parse_http_time, dan unixtime |
| Fungsi algoritma cipher | aes_new, aes_enc, aes_dec, sha1, sha2, hmac, hmac_sha1, md5, dan md5_bin |
| Fungsi JSON | json_enc dan json_dec |
| Fungsi lainnya | base64_enc, base64_dec, url_escape, url_unescape, rand, rand_hit, crc, tonumber, base64_enc_safe, base64_dec_safe, dan randomseed |
| Fungsi array | arr_concat, arr_insert, arr_remove, arr_sort, dan arr_len |
| Fungsi logika request | server_addr, server_port, client_addr, client_country, client_region, client_isp, ip_country, ip_region, ip_isp, req_uri, req_uri_basename, req_uri_ext, req_uri_seg, req_uri_arg, req_uri_query_string, req_scheme, req_method, req_host, req_user_agent, req_referer, req_cookie, req_first_x_forwarded, req_header, dan req_id |