# Julia Packages Scraper (`crawlerbros/julia-packages-scraper`) Actor Scrape Julia package metadata from the official Julia General Registry. Search packages by name or fetch specific packages - get version, repo URL, dependencies, and more. - **URL**: https://apify.com/crawlerbros/julia-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 ## Julia Packages Scraper Scrape Julia package metadata from the official [Julia General Registry](https://github.com/JuliaRegistries/General). Search for packages by name or fetch specific packages — get UUID, latest version, repository URL, dependencies, and more. ### Features - **Search packages** by name query (prefix and substring matching) - **Fetch specific packages** by exact name - Extracts: package name, UUID, latest version, repository URL, dependencies, source URL - No authentication required — uses publicly available GitHub raw content - Handles the full Julia General Registry (10,000+ packages) ### Input | Field | Type | Description | Default | |-------|------|-------------|---------| | `mode` | String (select) | `searchPackages` or `getByName` | `searchPackages` | | `searchQuery` | String | Name query for package search | `DataFrames` | | `packageNames` | Array of strings | Exact package names for `getByName` mode | `[]` | | `maxItems` | Integer (1–500) | Maximum number of records to return | `10` | #### Mode: searchPackages Search the Julia General Registry for packages whose name matches the query string. Prefix matches are ranked first, followed by substring matches. **Example input:** ```json { "mode": "searchPackages", "searchQuery": "DataFrames", "maxItems": 10 } ```` #### Mode: getByName Fetch specific packages by their exact registered name (case-insensitive). **Example input:** ```json { "mode": "getByName", "packageNames": ["DataFrames", "Plots", "Flux"], "maxItems": 10 } ``` ### Output Each record contains: | Field | Type | Description | |-------|------|-------------| | `packageName` | String | Registered package name | | `uuid` | String | Unique identifier from registry | | `version` | String | Latest registered version | | `repositoryUrl` | String | Git repository URL | | `description` | String | Package description (if available) | | `license` | String | License (if specified in Package.toml) | | `dependencies` | Array | Names of direct dependencies | | `sourceUrl` | String | JuliaHub package page URL | | `registryUrl` | String | GitHub registry entry URL | | `recordType` | String | Always `"package"` | | `scrapedAt` | String | ISO 8601 timestamp | #### Sample Output Record ```json { "packageName": "DataFrames", "uuid": "a93c6f00-e57d-5684-b7b6-d8193f3e46c0", "version": "1.8.2", "repositoryUrl": "https://github.com/JuliaData/DataFrames.jl.git", "dependencies": [ "CategoricalArrays", "DataAPI", "DataStructures", "InvertedIndices", "PooledArrays", "PrettyTables", "Printf", "Random", "Reexport", "SentinelArrays", "SortingAlgorithms", "Statistics", "TableTraits", "Tables", "Unicode" ], "sourceUrl": "https://juliahub.com/ui/Packages/DataFrames", "registryUrl": "https://github.com/JuliaRegistries/General/tree/master/D/DataFrames", "recordType": "package", "scrapedAt": "2026-05-30T12:00:00+00:00" } ``` ### Data Source Data is sourced directly from the [Julia General Registry](https://github.com/JuliaRegistries/General) on GitHub — the official central registry for Julia packages. No authentication is required. ### FAQs **Q: How many Julia packages are in the registry?** A: The Julia General Registry contains over 10,000 registered packages. **Q: Does the actor require a GitHub API token?** A: No. The actor fetches raw TOML files directly from `raw.githubusercontent.com`, which does not require authentication. **Q: What if a package has no description?** A: The `description` field is omitted. Julia's Package.toml format does not always include a description field. **Q: How is the latest version determined?** A: The actor reads `Versions.toml` from the registry and takes the last listed version entry. **Q: Why is there a `registryUrl` and a `sourceUrl`?** A: `registryUrl` points to the package's folder in the Julia General Registry on GitHub. `sourceUrl` points to the JuliaHub page, which provides a richer browsing experience. **Q: Can I fetch a specific version?** A: The actor always retrieves the latest registered version. Fetching specific versions is not supported. # Actor input Schema ## `mode` (type: `string`): What to fetch: search packages by query, or get specific packages by exact name. ## `searchQuery` (type: `string`): Name query to filter Julia packages (mode=searchPackages). Matches packages whose name starts with or contains this string. ## `packageNames` (type: `array`): List of exact Julia package names to fetch (mode=getByName), e.g. \["DataFrames", "Plots", "Flux"]. ## `maxItems` (type: `integer`): Maximum number of package records to return. ## Actor input object example ```json { "mode": "searchPackages", "searchQuery": "DataFrames", "maxItems": 10 } ``` # Actor output Schema ## `packages` (type: `string`): Dataset containing all scraped Julia package records. # 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": "DataFrames", "maxItems": 10 }; // Run the Actor and wait for it to finish const run = await client.actor("crawlerbros/julia-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": "DataFrames", "maxItems": 10, } # Run the Actor and wait for it to finish run = client.actor("crawlerbros/julia-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": "DataFrames", "maxItems": 10 }' | apify call crawlerbros/julia-packages-scraper --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=crawlerbros/julia-packages-scraper", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Julia Packages Scraper", "description": "Scrape Julia package metadata from the official Julia General Registry. Search packages by name or fetch specific packages - get version, repo URL, dependencies, and more.", "version": "1.0", "x-build-id": "wGwIsyu1dAfNISiEO" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/crawlerbros~julia-packages-scraper/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-crawlerbros-julia-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~julia-packages-scraper/runs": { "post": { "operationId": "runs-sync-crawlerbros-julia-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~julia-packages-scraper/run-sync": { "post": { "operationId": "run-sync-crawlerbros-julia-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", "getByName" ], "type": "string", "description": "What to fetch: search packages by query, or get specific packages by exact name.", "default": "searchPackages" }, "searchQuery": { "title": "Search query", "type": "string", "description": "Name query to filter Julia packages (mode=searchPackages). Matches packages whose name starts with or contains this string." }, "packageNames": { "title": "Package names (mode=getByName)", "type": "array", "description": "List of exact Julia package names to fetch (mode=getByName), e.g. [\"DataFrames\", \"Plots\", \"Flux\"].", "items": { "type": "string" } }, "maxItems": { "title": "Max items", "minimum": 1, "maximum": 500, "type": "integer", "description": "Maximum number of package records to return.", "default": 100 } } }, "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 } } } } } } } } } } ```