One request, structured results across every engine
The same response shape works for Google, Bing, Yandex, Baidu, DuckDuckGo, and megasearch. Use it in your app, SEO rank tracker, RAG pipeline, MCP client, or LLM prompt.
{"meta":{"engines_failed":[],"request_id":"019eb88e-d8ec-7c66-b50a-b8ff662a9db6","requested_at":"2026-06-11T21:20:29Z","took_ms":1201,"version":"2.1"},"pagination":{"has_more":true,"next_start":10,"page":1},"query":{"engines_requested":["google"],"text":"open source serp api"},"results":[{"classification":{"content_type":"webpage","source_hint":"code_repository"},"display_url":"github.com › karust › openserp","domain":"github.com","domain_info":{"category":"","sld":"github","tld":"com"},"engine":"google","favicon":"https://github.com/favicon.ico","id":"s_c84e44351617d71f","position":{"absolute":1},"rank":1,"snippet":"OpenSERP is a free, open-source API and CLI for accessing normalized search engine results from Google, Yandex, Baidu, Bing, DuckDuckGo, and Ecosia.","title":"karust/openserp: Open-source SERP API for AI, SEO & ...","type":"organic","url":"https://github.com/karust/openserp"},{"classification":{"content_type":"webpage","source_hint":"social_forum"},"display_url":"reddit.com › r › LocalLLaMA › comments › 1c62wmz › ...","domain":"reddit.com","domain_info":{"category":"forum","sld":"reddit","tld":"com"},"engine":"google","favicon":"https://reddit.com/favicon.ico","id":"s_4e18eaf95d083f7e","position":{"absolute":2},"rank":2,"snippet":"They're not entirely free but at least they offer a solid free plan for Google SERP scraping. You get 1,000 free API credits with Scrapingbee.","title":"Serp Alternative: Google result scrape- Hopefully free","type":"organic","url":"https://www.reddit.com/r/LocalLLaMA/comments/1c62wmz/serp_alternative_google_result_scrape_hopefully"}],"serp_features":[]}
The free, open-source SERP API for every major engine
OpenSERP handles browser automation, multi-engine parsing, and retry logic so you don't have to. MIT-licensed, production-ready, and useful both for LLM grounding and SEO workflows.
REST API server
Start a local REST server with one Docker command. Query any engine from your app, script, or pipeline in seconds.
Structured output
Consistent JSON with titles, URLs, snippets, ranks, and SERP features such as AI summaries, answer boxes, people-also-ask, and related searches.
Completely free
MIT-licensed with no API keys, no rate limits, and no vendor lock-in. Deploy on any infrastructure you already run.
From solo developers to data-heavy teams
OpenSERP fits workflows that need reliable, programmatic search access: AI grounding, RAG, research, SEO rank tracking, competitor monitoring, and product data pipelines.
Developers & product teams
Integrate live SERP data into apps, dashboards, or AI agents with a small REST API and minimal setup.
SEO teams & agencies
Track rankings across Google, Yandex, Baidu, and Bing, monitor competitors, and inspect SERP features such as AI summaries, answer boxes, people-also-ask, and related searches.
Research & AI pipelines
Ground LLM responses, RAG retrieval, and agent workflows on live, multi-engine search results, including Yandex and Baidu coverage.
Everything you need to get running
Use the docs for implementation detail, or browse feature pages for product-level workflows.
Short answers to what developers ask before adopting a SERP API. See the docs for the long version.
Is OpenSERP really free?+
Yes. OpenSERP is MIT-licensed open-source software. Self-host it with one Docker command and you pay nothing: no API keys, no per-query fees, no rate limits beyond what your own machine allows. OpenSERP Cloud is the optional managed version with pay-as-you-go pricing.
Is OpenSERP a free alternative to SerpApi, Serper, or Scale SERP?+
OpenSERP is the open-source alternative to paid SERP API providers. You get structured results for Google, Bing, Yandex, Baidu, DuckDuckGo, and Ecosia from one REST endpoint, without subscription fees or vendor lock-in. Use the OSS version free, or use OpenSERP Cloud when you do not want to run the infrastructure.
Which search engines does the SERP API support?+
Google, Bing, Yandex, Baidu, DuckDuckGo, and Ecosia for web and image search. Cloud also exposes multi-engine megasearch endpoints that query several engines in one call.
How do I self-host OpenSERP?+
Use the Docker image or Go binary to start a local REST server. Full installation commands and configuration details live in the docs.
Do I need an API key to use OpenSERP?+
No key is needed for the open-source self-hosted version. OpenSERP Cloud uses bearer-token API keys (osk_live_…) so we can meter usage and bill credits per successful response.
What output format does OpenSERP return?+
JSON by default, with Markdown, TXT, and NDJSON output options when you request them. The JSON shape stays consistent across engines: titles, URLs, snippets, rank, and best-effort SERP features such as AI summaries, answer boxes, people-also-ask, and related searches.