The two tools have clearly distinct purposes: one searches for patients by last name, the other retrieves clinical observations for a specific patient ID. There is no meaningful overlap or ambiguity between them.

Both tool names follow the same verb_noun snake_case pattern: search_patients and get_observations. The naming is consistent, predictable, and easy for an agent to navigate.

With only two tools, the server feels thin for a FHIR implementation, which typically supports a much broader range of resources and operations. However, the count is not egregiously low and could be acceptable for a narrowly scoped use case.

The server covers only patient search and observation retrieval, missing foundational FHIR operations like getting a patient by ID, creating or updating resources, and searching observations by clinical criteria. Agents would likely encounter dead ends when trying to perform common FHIR workflows.