generated: '2026-09-19' method: searched source: 'https://webcrawlerapi.com/docs (SDK pages) + https://github.com/WebCrawlerAPI (16 repos) + registry metadata endpoints: registry.npmjs.org, pypi.org/pypi/*/json, api.nuget.org, repo.packagist.org, search.maven.org, proxy.golang.org (all read 2026-09-19)' summary: first_party_sdk_count: 5 first_party_package_count: 9 note: Five first-party client SDKs (JavaScript/TypeScript, Python, PHP, .NET, Java) plus a LangChain integration, an n8n community node, the MCP server package and the webcr CLI. Every package is published by the WebCrawlerAPI GitHub organization; npm author is sdk@webcrawlerapi.com / support@webcrawlerapi.com and the single npm maintainer (niiotyo) publishes all four npm packages. JS and Python SDKs were released the same day (2026-08-13) and track the API closely; the .NET SDK has not been released since 2025-04-11 and predates output_formats, feeds, the agent and caching. github_organization: found: true url: https://github.com/WebCrawlerAPI public_repos: 16 email: hey@webcrawlerapi.com created: '2023-05-28' checked: '2026-09-19' packages: - language: javascript registry: npm name: webcrawlerapi-js url: https://www.npmjs.com/package/webcrawlerapi-js install: npm i webcrawlerapi-js official: true version: 2.2.2 published: '2026-08-13' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-js-sdk docs: https://webcrawlerapi.com/docs/sdk/js author: WebcrawlerAPI source: https://registry.npmjs.org/webcrawlerapi-js note: TypeScript, zero runtime dependencies, native fetch; covers crawl (v1) and scrape (v2) with built-in polling and getContent(). - language: python registry: pypi name: webcrawlerapi url: https://pypi.org/project/webcrawlerapi/ install: pip install webcrawlerapi official: true version: 2.1.3 published: '2026-08-13' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-python-sdk docs: https://webcrawlerapi.com/docs/sdk/python source: https://pypi.org/pypi/webcrawlerapi/json note: crawl / crawl_async / get_job / scrape; honours recommended_pull_delay_ms when polling. - language: php registry: packagist name: webcrawlerapi/sdk url: https://packagist.org/packages/webcrawlerapi/sdk install: composer require webcrawlerapi/sdk official: true version: 1.1.0 published: '2026-04-14' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-php-sdk docs: https://webcrawlerapi.com/docs/sdk/php source: https://repo.packagist.org/p2/webcrawlerapi/sdk.json note: PHP 8.1+, Guzzle 7. - language: csharp registry: nuget name: WebCrawlerApi url: https://www.nuget.org/packages/WebCrawlerApi install: dotnet add package WebCrawlerApi official: true version: 1.0.2 published: '2025-04-11' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-dotnet-sdk docs: https://webcrawlerapi.com/docs/sdk/dotnet source: https://api.nuget.org/v3/registration5-semver1/webcrawlerapi/index.json note: .NET 7+. Last release 2025-04-11 - before output_formats (2026-04), feeds (2025-12), the crawling agent (2026-06) and max_age caching shipped; its scrapeType parameter is the legacy single-format shape. The strongest staleness signal in this SDK set. - language: java registry: null name: WebCrawlerAPI.java url: https://github.com/WebCrawlerAPI/java-sdk install: curl -O https://raw.githubusercontent.com/WebCrawlerAPI/java-sdk/main/WebCrawlerAPI.java official: true version: null published: null repository: https://github.com/WebCrawlerAPI/java-sdk docs: https://webcrawlerapi.com/docs/sdk/java source: https://webcrawlerapi.com/docs/sdk/java note: 'Deliberately NOT on Maven Central (search.maven.org returns nothing for webcrawlerapi): the docs distribute a single dependency-free .java file to copy into a project (Java 17+). No registry means no version or release date to read; the repo was last pushed 2026-04-17.' - language: python registry: pypi name: webcrawlerapi-langchain url: https://pypi.org/project/webcrawlerapi-langchain/ install: pip install webcrawlerapi-langchain official: true version: 0.1.1 published: '2025-05-19' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-langchain docs: https://webcrawlerapi.com/docs/sdk/langchain source: https://pypi.org/pypi/webcrawlerapi-langchain/json kind: integration note: LangChain document loader wrapping the Python SDK; author WebCrawlerAPI . - language: javascript registry: npm name: n8n-nodes-webcrawlerapi url: https://www.npmjs.com/package/n8n-nodes-webcrawlerapi install: 'n8n community node: n8n-nodes-webcrawlerapi' official: true version: 0.3.9 published: '2026-09-06' repository: https://github.com/WebCrawlerAPI/n8n-node-webcrawlerapi docs: https://webcrawlerapi.com/docs/sdk/n8n source: https://registry.npmjs.org/n8n-nodes-webcrawlerapi kind: integration note: Most recently released first-party package. - language: javascript registry: npm name: webcrawler-mcp url: https://www.npmjs.com/package/webcrawler-mcp install: npx -y webcrawler-mcp official: true version: 1.0.0 published: '2025-07-19' repository: https://github.com/WebCrawlerAPI/webcrawlerapi-mcp docs: https://webcrawlerapi.com/docs/sdk/mcp source: https://registry.npmjs.org/webcrawler-mcp kind: mcp-server note: 'See mcp/webcrawlerapi-com-mcp.yml. bin: webcrawler-mcp.' - language: javascript registry: homebrew-tap name: webcr url: https://github.com/WebCrawlerAPI/homebrew-webcrawlerapi install: brew tap webcrawlerapi/webcrawlerapi && brew install webcr official: true version: 0.1.3 published: null repository: https://github.com/WebCrawlerAPI/webcr source: https://raw.githubusercontent.com/WebCrawlerAPI/homebrew-webcrawlerapi/master/Formula/webcr.rb kind: cli note: Version read from the formula url (archive/refs/tags/v0.1.3.tar.gz). No registry metadata endpoint exists for a tap and the GitHub tags API was rate-limited during this pass, so the release date is unrecorded rather than guessed. NOT on npm (registry.npmjs.org/webcr -> Not found) despite the package.json; the repo's own package.json still says 0.1.1 while the formula ships 0.1.3. See cli/webcrawlerapi-com-cli.yml. negative_probes: - registry: npm names: - webcrawlerapi - '@webcrawlerapi/mcp' - webcr result: Not found - registry: pypi names: - webcrawlerapi-mcp result: '404' - registry: maven-central query: webcrawlerapi result: 0 artifacts - registry: pkg.go.dev names: - github.com/webcrawlerapi/webcrawlerapi-go result: 404 - no Go SDK - registry: rubygems / crates.io result: not probed by name; no Ruby or Rust SDK is documented or present in the GitHub org other_first_party_repos: - webcrawlerapi-examples (Java examples) - scraping-browser-extension (Chrome extension "Page to Markdown", client-side, no API key) - crawl-search-results (TypeScript CLI, search results to markdown) - crawl-lab (crawler test-bed site) - skills (Claude Code Agent Skill - saved under skills/) - ckb (internal mini knowledge-base CLI)