Retriever AI

AI Subroutines is a feature of Retriever AI, a browser automation product delivered as a Chrome extension and a cloud service. It lets a user record a task once in the browser, save it as a callable tool, and replay it later as a deterministic routine without another round of LLM planning. The approach is to record and replay inside the web page itself. The extension captures the network requests the tab makes during the task, including form data and raw request bodies, and later dispatches them from the page's own execution context. Because the replay uses the same origin, cookies and site scripts, authentication such as rotating tokens and signed headers carries over without being rebuilt elsewhere. The vendor states that replays cost zero tokens and give the same result for the same input, and that every Subroutine can be called by an LLM as a tool. It targets repetitive, high volume work such as outreach, CRM updates and bulk posting, where per run model cost and inconsistency become a problem. Pricing is for the Retriever AI product. A Free plan costs $0 and is sponsored, with a daily fair use allowance and 100 welcome credits. Paid plans are Starter at $9.99 per month with 1,000 credits, Pro at $29.99 per month with 3,000 credits, Team at $99.99 per month with 10,000 credits, and Scale at $499.99 per month with 50,000 credits. Additional seats are $9.99 each. The listed address is a blog post rather than a product page.