InterfaceDelta

The four tools are read operations over overlapping-sounding artifacts (atlas entries, passports, stored tool facts), and the domain jargon ('effect classes', 'Passport', 'observation ID') makes the boundary between check_tool and get_atlas_entry non-obvious. Descriptions help somewhat (check_tool targets a single MCP tool by signature, get_atlas_entry targets a service), but an agent could plausibly pick the wrong one when looking up a service vs. a tool.

All four names follow a clean verb_noun snake_case pattern: check_tool, get_atlas_entry, get_passport, search_atlas. No style mixing or vague bare verbs.

Four tools is a lean but coherent surface for what appears to be a read-only registry/inspection service. It sits near the thin end, but each tool maps to a distinct artifact rather than padding.

The surface is entirely read-only: there is no way to submit an observation, register a tool, or list passports for a target, and get_passport requires an observation ID with no described way to obtain one. Live inspection is explicitly excluded, which may be intentional, but the create/lifecycle side of the domain is absent.