vcpkg-tool/docs/validating-json-schemas.md

To validate schemas, you can use the ajv validator.

npm install -g ajv ajv-formats ajv-cli

For example,

ajv validate -c ajv-formats -s .\docs\vcpkg.schema.json -r .\docs\vcpkg-configuration.schema.json -r .\docs\vcpkg-schema-definitions.schema.json -d C:\Dev\vcpkg\ports\**\vcpkg.json --all-errors

or

ajv validate -c ajv-formats -s .\docs\artifact.schema.json -r .\docs\vcpkg-schema-definitions.schema.json -d C:\Dev\vcpkg-ce-catalog\**\*.json --all-errors