# phpman > info > CPAN::Meta::Validator

[CPAN::Meta](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta/markdown)::[Validator(3Perl)](https://www.chedong.com/phpMan.php/man/Validator/3Perl/markdown)Programmers Reference [CPAN::Meta](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta/markdown)::[Validator(3perl)](https://www.chedong.com/phpMan.php/man/Validator/3perl/markdown)

NAME
       [CPAN::Meta::Validator](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta%3A%3AValidator/markdown) - validate CPAN distribution metadata structures

VERSION
       version 2.150010

SYNOPSIS
         my $struct = decode_json_file('META.json');

         my $cmv = [CPAN::Meta::Validator](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta%3A%3AValidator/markdown)->new( $struct );

         unless ( $cmv->is_valid ) {
           my $msg = "Invalid META structure.  Errors found:\n";
           $msg .= join( "\n", $cmv->errors );
           die $msg;
         }

DESCRIPTION
       This module validates a CPAN Meta structure against the version of the
       the specification claimed in the "meta-spec" field of the structure.

METHODS
   new
         my $cmv = [CPAN::Meta::Validator](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta%3A%3AValidator/markdown)->new( $struct )

       The constructor must be passed a metadata structure.

   is_valid
         if ( $cmv->is_valid ) {
           ...
         }

       Returns a boolean value indicating whether the metadata provided is
       valid.

   errors
         warn( join "\n", $cmv->errors );

       Returns a list of errors seen during validation.

BUGS
       Please report any bugs or feature using the CPAN Request Tracker.  Bugs
       can be submitted through the web interface at
       <<http://rt.cpan.org/Dist/Display.html?Queue=CPAN-Meta>>

       When submitting a bug or request, please include a test-file or a patch
       to an existing test-file that illustrates the bug or desired feature.

AUTHORS
       o   David Golden <<dagolden@cpan.org>>

       o   Ricardo Signes <<rjbs@cpan.org>>

       o   Adam Kennedy <<adamk@cpan.org>>

COPYRIGHT AND LICENSE
       This software is copyright (c) 2010 by David Golden, Ricardo Signes,
       Adam Kennedy and Contributors.

       This is free software; you can redistribute it and/or modify it under
       the same terms as the Perl 5 programming language system itself.

perl v5.34.0                      2025-07-25      [CPAN::Meta](https://www.chedong.com/phpMan.php/perldoc/CPAN%3A%3AMeta/markdown)::[Validator(3perl)](https://www.chedong.com/phpMan.php/man/Validator/3perl/markdown)