# Go Packages Scraper (pkg.go.dev) (`crawlerbros/go-packages-scraper`) Actor Scrapes Go package metadata from pkg.go.dev and Go module proxy. Search packages by query or fetch specific modules by path. - **URL**: https://apify.com/crawlerbros/go-packages-scraper.md - **Developed by:** [Crawler Bros](https://apify.com/crawlerbros) (community) - **Categories:** Developer tools, Automation - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 4 bookmarks - **User rating**: 5.00 out of 5 stars ## Pricing from $3.00 / 1,000 results This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage. Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. 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. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use 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 Packages Scraper (pkg.go.dev) Scrape Go package metadata from [pkg.go.dev](https://pkg.go.dev) and the Go module proxy. Search packages by keyword or fetch specific modules by their import path. ### Features - **Search Packages** — find Go packages matching any keyword (e.g., "web framework", "database ORM", "CLI") - **Get By Module** — fetch detailed metadata for specific modules by their Go import path - Extracts version, license, synopsis, Go version requirement, direct imports, and importedBy count - Sources data from pkg.go.dev search results and the official Go module proxy (proxy.golang.org) - No authentication or API keys required ### Input | Field | Type | Description | Default | |-------|------|-------------|---------| | `mode` | select | `searchPackages` or `getByModule` | `searchPackages` | | `searchQuery` | string | Keyword to search (e.g. "gin web framework") | — | | `modulePaths` | array | Module import paths for `getByModule` (e.g. `["github.com/gin-gonic/gin"]`) | `[]` | | `maxItems` | integer | Max records to return (1–500) | `50` | #### Example: Search Packages ```json { "mode": "searchPackages", "searchQuery": "gin web framework", "maxItems": 20 } ```` #### Example: Get By Module ```json { "mode": "getByModule", "modulePaths": [ "github.com/gin-gonic/gin", "github.com/gorilla/mux", "gorm.io/gorm" ], "maxItems": 10 } ``` ### Output Each record contains: | Field | Description | |-------|-------------| | `modulePath` | Full Go module path (e.g. `github.com/gin-gonic/gin`) | | `packageName` | Last segment of module path (e.g. `gin`) | | `version` | Latest published version (e.g. `v1.9.1`) | | `synopsis` | Short description of the package | | `license` | License identifier (e.g. `MIT`, `Apache-2.0`) | | `publishedAt` | ISO timestamp of latest version release | | `goVersion` | Minimum Go version required (e.g. `go1.20`) | | `imports` | List of direct module dependencies | | `importedBy` | Number of other packages that import this one | | `repositoryUrl` | GitHub/GitLab repository URL | | `sourceUrl` | Link to package page on pkg.go.dev | | `recordType` | Always `"package"` | | `scrapedAt` | ISO timestamp when record was scraped | #### Sample Output ```json { "modulePath": "github.com/gin-gonic/gin", "packageName": "gin", "version": "v1.12.0", "synopsis": "Gin is a HTTP web framework written in Go", "license": "MIT", "publishedAt": "Feb 28, 2026", "goVersion": "go1.20", "imports": ["github.com/gin-contrib/sse", "github.com/go-playground/validator/v10"], "importedBy": 183243, "repositoryUrl": "https://github.com/gin-gonic/gin", "sourceUrl": "https://pkg.go.dev/github.com/gin-gonic/gin", "recordType": "package", "scrapedAt": "2026-01-01T12:00:00+00:00" } ``` ### Use Cases - **Dependency research** — explore popular packages before adopting them - **Security audits** — check what packages are widely used and their licenses - **Competitive analysis** — compare package adoption and import counts - **Tech stack monitoring** — track version updates across your Go dependencies - **Developer tools** — build package registries or recommendation systems ### FAQ **Does this require a Go installation?** No. The actor fetches data directly from pkg.go.dev and the Go module proxy over HTTP. **Why are some fields missing on some records?** Fields like `synopsis`, `license`, and `goVersion` are optional and only included when present in the source data. **What is `importedBy`?** The number of public Go packages that directly import this module, as reported by pkg.go.dev. **Can I search for private modules?** No. This scraper only accesses publicly available packages on pkg.go.dev. **What is the rate limit?** pkg.go.dev and the Go module proxy are public services. The actor respects reasonable delays between requests to avoid overloading them. **How current is the data?** The actor fetches live data from pkg.go.dev and the Go module proxy at scrape time. # Actor input Schema ## `mode` (type: `string`): Scraping mode: searchPackages (search by keyword) or getByModule (fetch specific modules by path). ## `searchQuery` (type: `string`): Keyword to search Go packages (e.g. 'gin web framework', 'gorm database', 'cobra cli'). Used in searchPackages mode. ## `modulePaths` (type: `array`): List of Go module paths to fetch (e.g. 'github.com/gin-gonic/gin', 'github.com/gorilla/mux'). Used in getByModule mode. ## `maxItems` (type: `integer`): Maximum number of package records to return. ## Actor input object example ```json { "mode": "searchPackages", "searchQuery": "gin web framework", "modulePaths": [ "github.com/gin-gonic/gin" ], "maxItems": 10 } ``` # 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 '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "mode": "searchPackages", "searchQuery": "gin web framework", "modulePaths": [ "github.com/gin-gonic/gin" ], "maxItems": 10 }; // Run the Actor and wait for it to finish const run = await client.actor("crawlerbros/go-packages-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 '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "mode": "searchPackages", "searchQuery": "gin web framework", "modulePaths": ["github.com/gin-gonic/gin"], "maxItems": 10, } # Run the Actor and wait for it to finish run = client.actor("crawlerbros/go-packages-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 '{ "mode": "searchPackages", "searchQuery": "gin web framework", "modulePaths": [ "github.com/gin-gonic/gin" ], "maxItems": 10 }' | apify call crawlerbros/go-packages-scraper --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=crawlerbros/go-packages-scraper", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Go Packages Scraper (pkg.go.dev)", "description": "Scrapes Go package metadata from pkg.go.dev and Go module proxy. Search packages by query or fetch specific modules by path.", "version": "0.1", "x-build-id": "WeDdfFKCPzSDF01hn" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/crawlerbros~go-packages-scraper/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-crawlerbros-go-packages-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/crawlerbros~go-packages-scraper/runs": { "post": { "operationId": "runs-sync-crawlerbros-go-packages-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/crawlerbros~go-packages-scraper/run-sync": { "post": { "operationId": "run-sync-crawlerbros-go-packages-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "required": [ "mode" ], "properties": { "mode": { "title": "Mode", "enum": [ "searchPackages", "getByModule" ], "type": "string", "description": "Scraping mode: searchPackages (search by keyword) or getByModule (fetch specific modules by path).", "default": "searchPackages" }, "searchQuery": { "title": "Search Query", "type": "string", "description": "Keyword to search Go packages (e.g. 'gin web framework', 'gorm database', 'cobra cli'). Used in searchPackages mode." }, "modulePaths": { "title": "Module Paths", "type": "array", "description": "List of Go module paths to fetch (e.g. 'github.com/gin-gonic/gin', 'github.com/gorilla/mux'). Used in getByModule mode.", "items": { "type": "string" } }, "maxItems": { "title": "Max Items", "minimum": 1, "maximum": 500, "type": "integer", "description": "Maximum number of package records to return.", "default": 50 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```