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Set a pre-call webhook that Nixflex calls before the AI answers, so you can screen or route the call. Configured per phone number (or per agent).

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Set the pre-call webhook (per number)

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phoneNumber
string
required
The phone number in E.164 format, passed in the URL.
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url
string
required
Your pre-call webhook endpoint. Must be an https URL.
curl -X PUT "https://api.nixflex.com/v1/integrations/precall/number/+447446466847" \
  -H "Authorization: Bearer nxf_xxx:nxfs_xxx" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://your-app.com/precall"}'

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Per agent

The same shape is available per agent at /integrations/precall/agent/:agentId.

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Check / remove

curl -X GET "https://api.nixflex.com/v1/integrations/precall/number/+447446466847" \
  -H "Authorization: Bearer nxf_xxx:nxfs_xxx"

curl -X DELETE "https://api.nixflex.com/v1/integrations/precall/number/+447446466847" \
  -H "Authorization: Bearer nxf_xxx:nxfs_xxx"

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Notes

  • The number must belong to your account. A number you do not own returns 404.
  • For how the pre-call gate works, see Pre-call gate.