Search returns web results from DeepSeek's own search engine and Fetch returns a page as Markdown, each at $0.75 per 1,000 successful calls. Calls through DeepSeek Harness, Claude Code and Codex are free for DeepSeek API users until billing starts Oct 31 at 16:00 UTC.
For teams building agents that watch supplier sites, prices or regulations: a cheap way to give them live web lookups.
Walking up to a cabinet with no register map is risky, because a wrong poll can fault live equipment. This tool stays in listen-only mode, infers baud rate, node IDs and register maps from traffic already on the wire, and hands the results to an agent.
For controls engineers doing brownfield surveys: map an undocumented Modbus, CAN or J1939 network before anyone touches it.
It gives an agent the robot's topics, maps and camera feeds, and a read-only mode removes every tool that can send a command. Look first, touch later is the right order for agents near moving equipment.
For automation engineers running inspection robots, crawlers or AMRs: let the agent read the robot's state before you ever let it publish a command.
Given only the model number, Claude Code found the TV on wifi, removed 25 Xiaomi packages and wrote a new launcher. The same move applies to locked-down devices on a plant network: an agent can find and reshape them fast, which cuts both ways for OT security.