Each tool targets a distinct concern: live catalog listing, a delta against the previous scan, and curated static provider info. The only mild overlap is between list_free_models and free_model_changes, since the diff presumably builds on the same catalog, but descriptions make the boundary clear.

list_free_models follows a verb_noun pattern while free_model_changes and free_providers are bare noun phrases, so the convention is mixed. Names remain short and readable, and the shared 'free' prefix gives topical coherence.

Three tools is lean but each covers a genuinely different access mode (live query, historical diff, curated reference). The scope is narrow enough that this isn't bloated, though it sits at the thin end of the range.

The surface has a notable gap: free_model_changes diffs against 'the last local scan' but there is no tool to perform or update a scan/baseline, so the diff can be a dead end. There is also no lookup for a single model's details or pricing limits beyond raw listing.