CPAN::Meta::Validator(3pm) Perl Programmers Reference Guide CPAN::Meta::Validator(3pm)

# [NAME](#NAME)

CPAN::Meta::Validator - validate CPAN distribution metadata structures

# [VERSION](#VERSION)

version 2.150013

# [SYNOPSIS](#SYNOPSIS)

```
  my $struct = decode_json_file('META.json');
  my $cmv = CPAN::Meta::Validator->new( $struct );
  unless ( $cmv->is_valid ) {
    my $msg = "Invalid META structure.  Errors found:\n";
    $msg .= join( "\n", $cmv->errors );
    die $msg;
  }
```

# [DESCRIPTION](#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](#METHODS)

## [new](#new)

```
  my $cmv = CPAN::Meta::Validator->new( $struct )
```

The constructor must be passed a metadata structure.

## [is\_valid](#is_valid)

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

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

## [errors](#errors)

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

Returns a list of errors seen during validation.

# [BUGS](#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](#AUTHORS)

- David Golden <dagolden@cpan.org>
- Ricardo Signes <cpan@semiotic.systems>
- Adam Kennedy <adamk@cpan.org>

# [COPYRIGHT AND LICENSE](#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.

2026-10-27 perl v5.44.0

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Document: CPAN::Meta::Validator(3pm) from perl 5.44.0-r4 (Chainguard OS)
Source: https://github.com/Perl/perl5.git