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POST
Dedup
The “pre-flight before you pay” check. You’re about to scrape 10k leads on Apollo for $300 — paste in the LinkedIn URLs (visible for free in Apollo’s preview), get back which ones you already have. Buy only the difference.

Request

You can also pass emails, or both:

Body

string[]
Up to 50,000 emails per call.
string[]
Up to 50,000 LinkedIn URLs per call.
At least one of the two is required. The API chunks internally, so there’s no URL-length cap to worry about.

Response

Status values

Authentication note

Unlike the other v2 endpoints, /v2/dedup also accepts the workspace JWT — so the in-app Lists page can call it without going through the API key. External integrations use the API key as normal.

When to call it

  • Before paying Apollo for a list reveal — classify the LinkedIn URLs first
  • As a CSV pre-flight in your own workflow — drop a 5k-row list, send only the net_new rows
  • In a workspace audit — how much of last quarter’s $X list spend was already in our pipeline?