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POST
/
v1
/
prospect
/
phone
Phone from LinkedIn
curl --request POST \
  --url https://api.gtmapis.com/v1/prospect/phone \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "person_linkedin_url": "<string>"
}
'
{
  "phone": "<string>",
  "found": true,
  "credits_charged": 123
}

​
Phone from LinkedIn

Find phone numbers for a person using their LinkedIn profile URL. Returns the best-matched phone number.

​
Endpoint

POST /v1/prospect/phone

​
Request

​
person_linkedin_url
string
required
LinkedIn profile URL (e.g., “https://linkedin.com/in/janesmith”)

​
Example Request

curl -X POST https://api.gtmapis.com/v1/prospect/phone \
  -H "Content-Type: application/json" \
  -H "X-API-Key: gtm_test_your_key_here" \
  -d '{
    "person_linkedin_url": "https://linkedin.com/in/janesmith"
  }'

​
Response

​
phone
string
Phone number in E.164 format
​
found
boolean
Whether a phone number was found
​
credits_charged
integer
Number of credits charged

​
Success Response

{
  "phone": "+14155551234",
  "found": true,
  "credits_charged": 5
}

​
Not Found Response

{
  "phone": "",
  "found": false,
  "credits_charged": 0
}

​
Credit Pricing

ResultCredits Charged
Phone found5 credits
Not found0 credits
Error / failure0 credits
Phone lookups cost 5 credits per successful result. No charge if the lookup returns no results.

​
Error Responses

​
400 Bad Request

{
  "error": "Bad Request",
  "message": "person_linkedin_url is required"
}

​
401 Unauthorized

{
  "error": "Unauthorized",
  "message": "Invalid API key"
}

​
Use Cases

Get direct phone numbers for key decision-makers to supplement email outreach with cold calls.
Fill in missing phone numbers for contacts already in your CRM using their LinkedIn URLs.
Add phone steps to your outbound sequences by enriching prospects with direct dial numbers.

Email from LinkedIn

Get email from LinkedIn profile

Phone to Person

Reverse lookup person from phone

ICP Search

Find people matching your ICP

Employee Search

Search employees at a company

Company Search

Find companies matching criteria

Prospect Account

Check account status and credits