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Json encoder and decoder for Common-Lisp
Common Lisp
branch: master

Merge pull request #8 from agrostis/master

Added ABCL as CLOS-capable implementation (fix #6).
latest commit 6dfebb9540
@hankhero authored


CL-JSON provides an encoder of Lisp objects to JSON format and a corresponding decoder of JSON data to Lisp objects. Both the encoder and the decoder are highly customizable; at the same time, the default settings ensure a very simple mode of operation, similar to that provided by YASON or ST-JSON. CL-JSON is well tested and the automated testcases includes the JSON_checker tests.


  • 2006 First version by Henrik Hjelte
  • 2009 Major update by Boris Smilga, adding lots of features.
  • 2009 New alternative encoder, the explicit sexp-encoder.
  • 2011 Json-rpc version 2 format by Robert Goldman.
  • 2012 Move from darcs to git.




Documentation is at the project page on

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