DeepSeek opens its search index and scores a Roblox PDF above a working site
Suganthan Mohanadasan tested the new API and found a 'Free Robux Generator' PDF rated at the top authority tier.
DeepSeek has opened its search index to developers and SEOs through an API. Suganthan Mohanadasan tested it and posted his findings on LinkedIn on 19 October 2026.
The API returns the sources DeepSeek retrieves, an authority score, and a reranking score. Mohanadasan ran 110 calls for $0.08.
DeepSeek says the index has protections against SEO and GEO spam. Mohanadasan's test undercuts that claim.
His own site scored 1 out of 4 on authority. A "Free Robux Generator" PDF hosted on a .gov domain scored 4 out of 4, the top tier. The scoring appears to lean heavily on host signals rather than page content.
What the API actually exposes
Practitioners can now query DeepSeek's search engine directly. The response shows which sources were pulled. It shows how the system scored each one for authority. It also shows how it reranked them before generating an answer.
That level of access is rare. Most AI Search systems treat retrieval as a black box.
How to read this before acting on it
This is one practitioner's early test. The Robux PDF is a vivid example, not a sample. We think the useful move is to run your own queries through the API and log the authority and reranking scores for pages you already track in other engines.
Compare the scores against what you see cited elsewhere. If DeepSeek's authority signal is this noisy on a .gov host, it will be noisy on yours too, in both directions. Measure before you treat any score as a target.
The scores are a diagnostic, not a goal to optimise against. A system that rates a Robux generator at the ceiling is telling you its authority signal is not yet one you can chase.