No key means no quota tied to one
FreeSerp is a web search and SERP API for AI agents with no API key, no signup and no published rate plan โ the two sources behind it are FreeSerp Global, an index of 3.1B+ web pages, and FreeSerp Main, 20M+ site profiles with written summaries. Removing the key removes the quota that a key usually carries along with it into every request.
A rate limit is usually attached to a key: so many requests per key, per minute, before an error comes back. FreeSerp has no key to attach one to, which is a specific structural reason a published rate plan is absent, not a promise about what happens under genuinely heavy load.
Related tools
On this page
No key, so no per-key quota
Most search APIs meter usage against a key, and the quota lives on that key rather than anywhere else. FreeSerp issues no key and requires no signup, so there is nothing to attach a per-account quota to โ that is the mechanism behind the absence of a published rate plan, not a separate guarantee layered on top of the index itself.
Two sources, each with its own scope
FreeSerp Global is an index the service built itself, covering more than 3.1 billion web pages. FreeSerp Main is a different set entirely: 20 million-plus site profiles, each carrying an LLM-written summary rather than raw page text. An agent picks the source that matches what it needs, full page results or a shorter summarized profile of a site.
A REST API and an MCP connector, same access
Both the JSON REST API and the MCP connector reach the same two sources with the same absence of a key requirement on either path in. There is no faster or higher-limit tier reached only through one of the two integration paths โ the connector is simply a different door into the same underlying index and data.
What no published limit does not mean
FreeSerp does not claim real-time Google results or scraped Google data โ it positions itself as a keyless alternative to the Google and Bing search APIs, built on its own index instead of on theirs. It also does not publish a freshness guarantee. No stated rate limit is not the same as no limit at all; it means none has been published anywhere.
Volume is not the only ceiling an agent can hit
Removing a per-key request cap still leaves the size of the two indexes as a real boundary: 3.1B+ pages and 20M+ profiles are large, but they are fixed numbers, not an open-ended promise to cover every page on the web. An agent searching for an obscure or very new page can still come back with nothing, independent of how many requests it is allowed to send.