DeepSeek Opens Its App Tools to Developers, Moving Search and File Reading Onto Its Servers

DeepSeek is handing developers the parts that turn a language model into a working chat app. Its November 13 API update opens built-in search, document input and link reading, with DeepSeek's servers doing the tool calls and assembling the material the model needs to answer.

That moves a chunk of the work out of a developer's own application. A team building a chatbot can ask the service to fetch a page or search the web rather than build that entire loop itself. It also puts more of that conversation machinery in DeepSeek's hands.

The search runs inside the conversation

The features work with deepseek-flash across the Messages, Responses and Chat Completions interfaces. With thinking switched off, web search can retrieve web pages or images and return an answer with citations. With thinking enabled, the model can search and read pages through several reasoning steps.

Files follow the same path into the conversation. PDFs, Office documents and images can be parsed into context; link reading fetches URLs from a user's message. DeepSeek is also exposing standalone search, page fetching, optical character recognition and speech APIs.

DeepSeek's chatbot guide spells out a remaining responsibility for the application: it must display the returned blocks and pass them back unchanged in the next round. The server handles retrieval, but the client still has to preserve the conversation correctly.

A safety switch comes with responsibilities

DeepSeek says public-facing services must enable its content safety checks. Those checks review inputs and outputs and return a refusal marker when they identify a risk. The company describes the feature as basic risk control, while leaving developers responsible for content review, model registration and AI labeling obligations.

There is also an open-source demo client with chat-history import and voice features. It gives developers a concrete starting point for rebuilding the app experience. The safety switch does not remove the obligations that come with putting that experience in front of the public.

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