Duplicate detection and merge review
Two endpoints handle duplicate detection: a cheap aggregate count for banner surfaces and pre-merge checks, and the full group list you fetch when you open the merge workflow.GET /api/v1/contacts/duplicates/countextras — the number of contacts that would be merged away — plus
hasMore indicating whether duplicates exist beyond the slice the count scanned.
Use it for banner headlines and pre-merge checks.
string
exact (default) or fuzzy. exact is the right choice for banner counts;
fuzzy mirrors the detection pass the merge endpoint uses.integer
Per-strategy group cap, default
100, range 1–200. Raise it when
hasMore returns true and you need to scan deeper before reporting
“0 duplicates.”GET /duplicates to fetch the full group list (with per-group contact
records) when you actually render the merge review UI — fetching it just for a
banner paints the contacts page with data you don’t read.