Ansafi
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Quickstart

From signup to a filtered lead list in three calls.

1 · Get a key

Sign in, open Account, create a key. It is shown once — we store only a hash.

2 · See what is sellable

Only technologies with a passing list audit can be queried for lists.

curl "https://www.ansafi.com/api/v1/technologies?list_audit_status=audited" \
  -H "Authorization: Bearer $ANSAFI_KEY"

3 · Build a list

curl "https://www.ansafi.com/api/v1/companies?technology=Klaviyo\
&employee_range=11-50,51-200&country=united%20states&limit=100" \
  -H "Authorization: Bearer $ANSAFI_KEY"

Every row carries the prospect's whole detected stack, not just the technology you filtered on.

Read meta before you use data. It carries the crawl month the rows were observed in, the source behind them, and the fill rate of every sparse column. A 3.9% phone column is not a phone column.

4 · Watch for changes

Switch feeds tell you when a company changed, not just what they run. See the switch feed →