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Base URL

https://api.datalinkapis.com

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Request format

All endpoints use POST with a JSON body and Bearer token authentication. 
curl -X POST https://api.datalinkapis.com/v1/{endpoint} \
  -H "Authorization: Bearer dl_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{ ... }'

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Endpoints

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Core endpoints

EndpointDescriptionCredits
POST /v1/emailEmail syntax, MX, and SMTP validation1
POST /v1/ipIP geolocation and proxy detection1
POST /v1/phonePhone carrier and HLR lookup2
POST /v1/domainDomain WHOIS, DNS, and safety score2

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Bundle endpoints

Bundle endpoints charge dynamically based on the fields you include — you only pay for the lookups you request.
EndpointDescriptionCredits
POST /v1/deliverabilityDeep email deliverability checkup to 3
POST /v1/contact-intelEmail + Phone + Domain + IP combinedup to 4
POST /v1/fraud-signalsEmail + Phone + IP — composite fraud risk scoreup to 4

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Common fields in every response

FieldTypeDescription
credits_usedintegerCredits deducted for this request

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Try it live

Use the API Playground to fire real requests against all endpoints without writing any code.