# Go Modules Scraper - Package Versions, Metadata & Dependencies (`klondikeking/go-modules-scraper`) Actor

Extract Go module metadata from proxy.golang.org: versions, latest release, go.mod Go version, and dependencies. Ideal for dependency auditing and Go ecosystem research.

- **URL**: https://apify.com/klondikeking/go-modules-scraper.md
- **Developed by:** [Pierrick McD0nald](https://apify.com/klondikeking) (community)
- **Categories:** Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$1.00 / 1,000 module extracteds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Go Modules Scraper - Package Versions, Metadata & Dependencies

Extract comprehensive metadata from the Go Module Mirror (proxy.golang.org) for any list of Go modules. This Actor returns all published versions, the latest version with its timestamp, the Go version declared in the latest go.mod, and a complete list of direct dependencies. It is ideal for Go ecosystem research, dependency auditing, license tracking, vulnerability analysis, and keeping an internal software catalog up to date.

The Go Module Mirror is a public, read-only API maintained by Google. It serves version lists, version metadata, and go.mod files without authentication, making this Actor fast, reliable, and cost-effective. No browser rendering or anti-bot workarounds are required.

### Use Cases

- **Dependency auditing** — Pull the latest Go version and direct dependencies for a set of modules to detect outdated or risky transitive dependencies.
- **Software cataloging** — Build an internal inventory of Go libraries used across your organization with version history and dependency counts.
- **Ecosystem research** — Measure version velocity, minimum Go version requirements, and dependency graph density across popular open-source modules.
- **Vulnerability analysis** — Cross-reference module versions and dependencies with security advisory databases.

### Input

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `modulePaths` | Array | Yes | List of Go module paths, e.g., `github.com/spf13/cobra`. |
| `maxVersions` | Number | No | Maximum versions recorded per module (default: 100, 0 = unlimited). |
| `includeGoMod` | Boolean | No | Fetch latest go.mod to extract Go version and dependencies (default: true). |
| `proxyConfiguration` | Object | No | Proxy configuration. Apify proxy is included by default. |

### Output

The Actor outputs a dataset with one row per module:

```json
{
  "modulePath": "github.com/spf13/cobra",
  "moduleName": "cobra",
  "versionsCount": 24,
  "versions": "v1.9.0, v1.8.0, v1.7.0, ...",
  "latestVersion": "v1.9.0",
  "latestTime": "2025-02-12T14:30:00Z",
  "goVersion": "1.15",
  "dependenciesCount": 3,
  "dependencies": "github.com/cpuguy83/go-md2man/v2, github.com/inconshreveable/mousetrap, github.com/spf13/pflag",
  "sourceUrl": "https://proxy.golang.org/github.com/spf13/cobra",
  "error": ""
}
```

### Pricing

Pay per event: $0.001 per module extracted.

### Limitations

- Only public modules available on proxy.golang.org can be fetched. Private modules or modules excluded from the mirror are not supported.
- The Go Module Mirror caches data, so very recent releases may take a few minutes to appear.
- Indirect dependencies are not separated from direct dependencies in the current version.

### FAQ

**Q: Can I scrape all Go modules?**
A: No. The Actor processes the module paths you provide. Use it to audit specific libraries rather than crawl the entire ecosystem.

**Q: Do I need a proxy?**
A: Apify proxy is enabled by default and recommended for production runs. Direct requests may work for small tests.

### Changelog

- **v1.0.0** — Initial release

# Actor input Schema

## `modulePaths` (type: `array`):

List of Go module paths to scrape (e.g., github.com/spf13/cobra, golang.org/x/net). Leave empty to scrape a curated set of popular modules.

## `maxVersions` (type: `integer`):

Maximum number of versions to record per module. Use 0 for unlimited.

## `includeGoMod` (type: `boolean`):

If enabled, fetches the latest go.mod to extract Go version and direct dependencies.

## `proxyConfiguration` (type: `object`):

Configure proxy for scraping. Apify proxy is included by default.

## Actor input object example

```json
{
  "modulePaths": [
    "github.com/spf13/cobra",
    "github.com/gin-gonic/gin",
    "golang.org/x/net"
  ],
  "maxVersions": 10,
  "includeGoMod": true,
  "proxyConfiguration": {
    "useApifyProxy": true
  }
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `stats` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "modulePaths": [
        "github.com/spf13/cobra",
        "github.com/gin-gonic/gin",
        "golang.org/x/net"
    ],
    "maxVersions": 10,
    "includeGoMod": true,
    "proxyConfiguration": {
        "useApifyProxy": true
    }
};

// Run the Actor and wait for it to finish
const run = await client.actor("klondikeking/go-modules-scraper").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "modulePaths": [
        "github.com/spf13/cobra",
        "github.com/gin-gonic/gin",
        "golang.org/x/net",
    ],
    "maxVersions": 10,
    "includeGoMod": True,
    "proxyConfiguration": { "useApifyProxy": True },
}

# Run the Actor and wait for it to finish
run = client.actor("klondikeking/go-modules-scraper").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "modulePaths": [
    "github.com/spf13/cobra",
    "github.com/gin-gonic/gin",
    "golang.org/x/net"
  ],
  "maxVersions": 10,
  "includeGoMod": true,
  "proxyConfiguration": {
    "useApifyProxy": true
  }
}' |
apify call klondikeking/go-modules-scraper --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=klondikeking/go-modules-scraper",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/GwzyWmVye6pi6nQhY/builds/v8yZCwMioUf3ZWK7a/openapi.json