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An agent that queries open data without paying for it

Open Data Agent

9tools exposed to the agent

We designed the architecture for a Claude agent to query public data (mobility, air quality, safety) in real time, without the server hosting the connection ever seeing or paying for a single model token: the reasoning always lives in the assistant’s own account, and the server only translates the request to the public source and returns the JSON.

The infrastructure bill and the intelligence bill never mix, and neither side pays for the other. Nine tools are exposed to the agent, and the public sources it queries cost nothing.

Not a client case: a proof of technical range for the systems the studio can build.

Claude

Your account

calls a tool →← result

TB's server

Translates only

HTTP request →← JSON

Public source

Mobility · air quality · safety

Reasons. Pays its own tokens.

$0 — never touches a model token.

$0 — always open.

Two bills that never cross: the agent’s own account pays for the reasoning; the server never sees a model token.

Chart.jsModel Context Protocol