The economics are the argument: a single search tool bundled into a subscription you hold means no separate vendor, no second key, and metering against credits you are already spending. One tool is also negligible context. The caveat is the same as any bundled service — you are not choosing this search engine on its merits, you are choosing it because it is there. Worth comparing results against a dedicated search endpoint before it becomes your default.
Z.ai's search endpoint, offered as a benefit of their coding subscription rather than sold separately.
webSearchPrime — search returning page titles, URLs, summaries, site names and site icons.
A bearer API key. It is included with their coding plan, metered against plan credits by calls and an output multiplier. An SSE variant exists for clients that need it, taking the key in the URL instead.
Paste a URL with a key — add the endpoint to your client