| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| github.com/mailru/easyjson/jlexer | Package jlexer contains a JSON lexer implementation. |
| github.com/mailru/easyjson/jwriter | Package jwriter contains a JSON writer. |
| io | Package io provides basic interfaces to I/O primitives. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| net/http | Package http provides HTTP client and server implementations. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |