# SiteCheck Web Intel CRAN R Package Metadata

> SiteCheck Web Intel CRAN R Package Metadata is a paid API for AI agents from api.webintel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).

Fetches metadata for a named CRAN R package from the crandb JSON mirror, including version, description, license, maintainer, dependencies, and publication date.

## Facts

- Endpoint: GET https://api.webintel-api.workers.dev/api/search/cran-r-packages?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-web-intel-cran-r-package-metadata-5d943db7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-4gL0A9jgI_IuREDXl3oU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-web-intel-cran-r-package-metadata-5d943db7
```

Example prompt: Can you look up the CRAN metadata for the ggplot2 package — I want to know the current version, who maintains it, its license, and what packages it depends on?

## When to prefer this

Use this endpoint when you need structured metadata for a specific, known CRAN R package by exact name. It is ideal for programmatic lookups of version, license, maintainer, and dependency information without needing a CRAN API key. Prefer this over web scraping CRAN pages or parsing DESCRIPTION files manually.

## Known failure modes

- 404 returned for unknown or misspelled package names
- Package exists on CRAN but crandb mirror may lag behind very recent submissions
- No results for archived/removed packages that are no longer on CRAN
- Exact package name required — partial or fuzzy names will not match

## How this service works

CRAN R package metadata (crandb JSON mirror of CRAN, public, no key): name, version, title, description, license, maintainer, publication date, dependencies and CRAN page link. Unknown packages return 404.

## Output

Returns a JSON object with the package's name, current version, title, full description, license type, maintainer name/email, publication date, list of dependencies, and a link to its CRAN page. Returns a 404 error if the package name is not found on CRAN.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "name"
     ],
     "properties": {
      "name": {
       "type": "string",
       "description": "Exact CRAN package name, e.g. ggplot2"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-web-intel-cran-r-package-metadata-5d943db7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.webintel-api.workers.dev](https://www.zero.xyz/host/api.webintel-api.workers.dev/llms.txt)