Encoding Necessity for Standing Government Access to Platform-Held Data: A Three-Axis Model

Abstract

Government access to platform-held data is increasingly implemented not through isolated requests but through durable interfaces: dashboards, periodic reporting pipelines and application programming interfaces. This shift changes the object of legality. A single request can be assessed by asking whether a stated purpose justifies the particular disclosure. A standing interface, by contrast, creates an ongoing access capability whose intrusiveness accumulates through repetition, aggregation and time. This article develops a three-axis model for encoding the requirement of minimum necessity at the configuration layer of such interfaces. The model treats data fields, extraction frequency and temporal persistence as the minimal auditable surface of standing access, while requiring purpose, recipients, selectors and onward sharing to be recorded in the same authorisation schedule. Using Chinese administrative interface governance as a stress test, especially health-code pipelines and ride-hailing supervisory feeds, the article shows how lawful or plausible access channels can drift through field accretion, cadence escalation and retention extension. EU and US materials are used as design exemplars rather than as complete solutions, illustrating the importance of reasoned requests, strict-necessity limits, duration sensitivity and auditable safeguards. The article concludes by proposing a procedural toolkit: reasoned authorisations, versioned parameter sheets, access logs, renewal triggers, independent audit and remedies for drift. Where feasible, a policy-as-code counterpart can make authorised limits executable at the gateway.