NPM Package Info Lookup (Version, License, Downloads, Dependencies)

{
  "type": "object",
  "required": [
    "package"
  ],
  "properties": {
    "package": {
      "type": "string"
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "code": {
      "type": "string",
      "description": "Present instead of package fields when the queried name does not resolve to a real npm package, e.g. 'HTTP_400'."
    },
    "name": {
      "type": "string",
      "description": "The npm package name, e.g. 'react'."
    },
    "author": {
      "description": "Package author/maintainer metadata as npm's own registry publishes it. Often `null` -- shape when populated (a plain string vs. an {name, email, url} object, npm's own registry supports both) is not documented; do not assume a fixed shape."
    },
    "created": {
      "type": "string",
      "description": "ISO 8601 timestamp the package was first published."
    },
    "license": {
      "type": "string",
      "description": "SPDX-style license identifier, e.g. 'MIT'."
    },
    "message": {
      "type": "string",
      "description": "Human-readable detail accompanying `code`, e.g. 'Invalid input: HTTP 400'."
    },
    "keywords": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Keyword tags the package's maintainer attached to it on npm."
    },
    "dist_tags": {
      "type": "object",
      "properties": {
        "rc": {
          "type": "string"
        },
        "beta": {
          "type": "string"
        },
        "next": {
          "type": "string"
        },
        "canary": {
          "type": "string"
        },
        "latest": {
          "type": "string"
        },
        "backport": {
          "type": "string"
        },
        "experimental": {
          "type": "string"
        }
      },
      "description": "npm dist-tag pointers (which version each tag currently resolves to). A popular package may carry several tags (seven observed for react) -- a package that has never published under a given tag may omit that key.",
      "additionalProperties": true
    },
    "description": {
      "type": "string",
      "description": "The package's own npm registry description."
    },
    "dependencies": {
      "type": "array",
      "description": "Runtime dependencies. Often empty (`[]`) -- item shape when populated is not documented."
    },
    "last_modified": {
      "type": "string",
      "description": "ISO 8601 timestamp of the package's most recent publish."
    },
    "latest_version": {
      "type": "string",
      "description": "e.g. '19.2.8'."
    },
    "total_versions": {
      "type": "number",
      "description": "Count of versions ever published for this package."
    },
    "recent_versions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "version": {
            "type": "string"
          },
          "published": {
            "type": "string",
            "description": "ISO 8601 publish timestamp."
          }
        },
        "additionalProperties": true
      },
      "description": "The most recently published versions, newest first."
    },
    "dev_dependencies": {
      "type": "array",
      "description": "Development-only dependencies. Often empty (`[]`) -- item shape when populated is not documented."
    },
    "weekly_downloads": {
      "type": "number",
      "description": "Downloads over the trailing week."
    }
  },
  "description": "The npm package record. A package name that does not resolve to a real npm package returns `code`/`message` instead of any package field below.",
  "additionalProperties": true
}