diff --git a/META.json b/META.json
new file mode 100644
index 0000000..f57465d
--- /dev/null
+++ b/META.json
@@ -0,0 +1,72 @@
+{
+   "abstract" : "custom op checking attached to subroutines",
+   "author" : [
+      "Andrew Main (Zefram) <zefram@fysh.org>"
+   ],
+   "dynamic_config" : 0,
+   "generated_by" : "Module::Build version 0.4224",
+   "license" : [
+      "perl_5"
+   ],
+   "meta-spec" : {
+      "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec",
+      "version" : 2
+   },
+   "name" : "Devel-CallChecker",
+   "prereqs" : {
+      "build" : {
+         "requires" : {
+            "DynaLoader" : "0",
+            "ExtUtils::CBuilder" : "0.15",
+            "ExtUtils::ParseXS" : "0",
+            "File::Spec" : "0",
+            "IO::File" : "1.03",
+            "Module::Build" : "0",
+            "Test::More" : "0",
+            "perl" : "5.006",
+            "strict" : "0",
+            "warnings" : "0"
+         }
+      },
+      "configure" : {
+         "requires" : {
+            "Module::Build" : "0",
+            "perl" : "5.006",
+            "strict" : "0",
+            "warnings" : "0"
+         }
+      },
+      "runtime" : {
+         "conflicts" : {
+            "B::Hooks::OP::Check" : "< 0.19"
+         },
+         "requires" : {
+            "DynaLoader" : "0",
+            "DynaLoader::Functions" : "0.001",
+            "Exporter" : "0",
+            "parent" : "0",
+            "perl" : "5.006",
+            "strict" : "0",
+            "warnings" : "0"
+         }
+      }
+   },
+   "provides" : {
+      "Devel::CallChecker" : {
+         "file" : "lib/Devel/CallChecker.pm",
+         "version" : "0.008"
+      }
+   },
+   "release_status" : "stable",
+   "resources" : {
+      "bugtracker" : {
+         "mailto" : "bug-Devel-CallChecker@rt.cpan.org",
+         "web" : "https://rt.cpan.org/Public/Dist/Display.html?Name=Devel-CallChecker"
+      },
+      "license" : [
+         "http://dev.perl.org/licenses/"
+      ]
+   },
+   "version" : "0.008",
+   "x_serialization_backend" : "JSON::PP version 2.93"
+}
diff --git a/META.yml b/META.yml
new file mode 100644
index 0000000..1152ec9
--- /dev/null
+++ b/META.yml
@@ -0,0 +1,46 @@
+---
+abstract: 'custom op checking attached to subroutines'
+author:
+  - 'Andrew Main (Zefram) <zefram@fysh.org>'
+build_requires:
+  DynaLoader: '0'
+  ExtUtils::CBuilder: '0.15'
+  ExtUtils::ParseXS: '0'
+  File::Spec: '0'
+  IO::File: '1.03'
+  Module::Build: '0'
+  Test::More: '0'
+  perl: '5.006'
+  strict: '0'
+  warnings: '0'
+configure_requires:
+  Module::Build: '0'
+  perl: '5.006'
+  strict: '0'
+  warnings: '0'
+conflicts:
+  B::Hooks::OP::Check: '< 0.19'
+dynamic_config: 0
+generated_by: 'Module::Build version 0.4224, CPAN::Meta::Converter version 2.150010'
+license: perl
+meta-spec:
+  url: http://module-build.sourceforge.net/META-spec-v1.4.html
+  version: '1.4'
+name: Devel-CallChecker
+provides:
+  Devel::CallChecker:
+    file: lib/Devel/CallChecker.pm
+    version: '0.008'
+requires:
+  DynaLoader: '0'
+  DynaLoader::Functions: '0.001'
+  Exporter: '0'
+  parent: '0'
+  perl: '5.006'
+  strict: '0'
+  warnings: '0'
+resources:
+  bugtracker: https://rt.cpan.org/Public/Dist/Display.html?Name=Devel-CallChecker
+  license: http://dev.perl.org/licenses/
+version: '0.008'
+x_serialization_backend: 'CPAN::Meta::YAML version 0.012'
diff --git a/SIGNATURE b/SIGNATURE
new file mode 100644
index 0000000..e823b67
--- /dev/null
+++ b/SIGNATURE
@@ -0,0 +1,44 @@
+This file contains message digests of all files listed in MANIFEST,
+signed via the Module::Signature module, version 0.81.
+
+To verify the content in this distribution, first make sure you have
+Module::Signature installed, then type:
+
+    % cpansign -v
+
+It will check each file's integrity, as well as the signature's
+validity.  If "==> Signature verified OK! <==" is not displayed,
+the distribution may already have been compromised, and you should
+not run its Makefile.PL or Build.PL.
+
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+SHA1 28471ed9c62bbfb12a2afac9911c6dd919b7f9f5 .gitignore
+SHA1 f34e5db24a9ababe49ae281e723f98675a0169ad Build.PL
+SHA1 2a03825714cc27cfead4445266f6eca9ab570f14 Changes
+SHA1 ed757788d1aec2d2c3a87f40dd5ad4585def7816 MANIFEST
+SHA1 b36885f12a506254a0749826ca2b6e854e3116cf META.json
+SHA1 a89628c6a82fdf7aee67196e4d3ddfffd5d8ba0e META.yml
+SHA1 e5143ca74f252449f51ae1f5971cc92cfb80f794 README
+SHA1 df9ab5f6152be6ce3790805957d44039b5eea363 lib/Devel/CallChecker.pm
+SHA1 df333dd9a5563f8f0afa0cd8d60a6caa56bc76bd lib/Devel/CallChecker.xs
+SHA1 7bbcdddd858a25a26167ee5f7ff642efbcf1b646 t/callck.t
+SHA1 19955e7370031cec5f5787f26d9632ac9fe52c3b t/callck.xs
+SHA1 f02cae7124e7060dbd03f4b62113532e08b289d9 t/lib/t/LoadXS.pm
+SHA1 3652419516be8528af3d5e7cb45d06f7ccbb7237 t/lib/t/WriteHeader.pm
+SHA1 904d9a4f76525e2303e4b0c168c68230f223c8de t/pod_cvg.t
+SHA1 65c75abdef6f01a5d1588a307f2ddfe2333dc961 t/pod_syn.t
+SHA1 5592ca771efd6617e525dd115c575ba2106ba14d t/rv2cvopcv.t
+SHA1 c8ddecbc62112ef846d14ebdaf91b50156d80ed5 t/rv2cvopcv.xs
+SHA1 102817fd6fa671998951fdf1dc56333bdf56532c t/threads.t
+SHA1 1ad7681a845fdecc219ce5b0ced752ec084beb1d t/threads1.xs
+SHA1 30e0563165e2583c63ec573887503a8ce8e5a643 t/threads2.xs
+SHA1 80af1f40b1054da5c48fe7b3d22f1796cd24d3d8 typemap
+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v1
+
+iEYEARECAAYFAll4OqkACgkQOV9mt2VyAVFDDQCgpuEcBg81kbhbf+eho952VNNr
+nBgAn0PVrAvAjMGbYGQ3SuD2wjlktxGf
+=u2BU
+-----END PGP SIGNATURE-----