Update a native contact

Changes the fields you name and leaves the rest alone.

Giving a custom field a value can start an active campaign whose trigger is that field being set. An empty string clears a field, so that trigger can fire again later. A field key that does not exist on this sub-account is an error, not a silent drop.

Changing phone re-checks the do-not-call history for the new number, by the same rule as a create. A number that was on do-not-call brings that decision with it.

Cookie-auth callers must send the x-csrf-token header.

Required API key scope: contacts:write.

PATCH

api

native-contacts

{contactId}

cURL

curl --request PATCH \
  --url https://api.teamfollowup.ai/api/native-contacts/{contactId} \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "lastName": "Diaz-Moreno",
  "customFields": {
    "budget": "6000"
  }
}'

import requests

url = "https://api.teamfollowup.ai/api/native-contacts/{contactId}"

payload = {
    "lastName": "Diaz-Moreno",
    "customFields": { "budget": "6000" }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({lastName: 'Diaz-Moreno', customFields: {budget: '6000'}})
};

fetch('https://api.teamfollowup.ai/api/native-contacts/{contactId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.teamfollowup.ai/api/native-contacts/{contactId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'lastName' => 'Diaz-Moreno',
    'customFields' => [
        'budget' => '6000'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.teamfollowup.ai/api/native-contacts/{contactId}"

	payload := strings.NewReader("{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.teamfollowup.ai/api/native-contacts/{contactId}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.teamfollowup.ai/api/native-contacts/{contactId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "_id": "nct_0123456789abcdef0123",
    "locationId": "nat_fd9e2a8dd4be4396b604",
    "firstName": "Ana",
    "lastName": "Diaz",
    "email": "ana@example.com",
    "phone": "+13125550142",
    "timezone": "America/Chicago",
    "address1": "400 W Erie St",
    "city": "Chicago",
    "state": "IL",
    "postalCode": "60654",
    "customFields": {
      "service_needed": "Implants",
      "budget": "4000"
    },
    "doNotCall": false,
    "source": "api",
    "callCount": 2,
    "lastOutcome": "TRANSFER",
    "createdAt": "2026-09-18T14:02:11.000Z",
    "updatedAt": "2026-09-20T09:14:52.000Z"
  }
}

Authorizations

Authorization

string

header

required

Send your API key as Authorization: Bearer YOUR_API_KEY.

Path Parameters

contactId

string

required

The contact id.

Minimum string length: 1

Query Parameters

locationId

string

required

The sub-account these contacts belong to. Your access to it is checked on every call. A sub-account with a CRM answers 400.

Body

application/json

The fields to change.

Only the fields you name are changed. An empty string clears one.

phone

string

E.164, or a ten-digit North American number. Any other number needs + or 00. A number another contact has is refused.

Example:

"+13125550142"

firstName

string

Maximum string length: 100

lastName

string

Maximum string length: 100

string

Must be a valid email address. It is saved in lower case.

Maximum string length: 254

timezone

string

An IANA zone such as America/Chicago. An empty string clears it, and the campaign's calling window then decides.

address1

string

Maximum string length: 200

city

string

Maximum string length: 200

state

string

Maximum string length: 200

postalCode

string

Maximum string length: 200

customFields

object

Values by field key, from GET /api/native-contacts/fields. An empty string clears one. An unknown key, or a value that does not fit its type, is refused.

Show child attributes

{key}

any

Response

The contact as it now is.

success

boolean

required

data

object

required

One person a CRM-less sub-account calls. Deliberately the minimum a dial needs: who they are, how to reach them, what zone they are in, whether they have asked not to be called, plus whatever fields the sub-account defines.

Show child attributes

{key}

any

cURL

curl --request PATCH \
  --url https://api.teamfollowup.ai/api/native-contacts/{contactId} \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "lastName": "Diaz-Moreno",
  "customFields": {
    "budget": "6000"
  }
}'

import requests

url = "https://api.teamfollowup.ai/api/native-contacts/{contactId}"

payload = {
    "lastName": "Diaz-Moreno",
    "customFields": { "budget": "6000" }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({lastName: 'Diaz-Moreno', customFields: {budget: '6000'}})
};

fetch('https://api.teamfollowup.ai/api/native-contacts/{contactId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.teamfollowup.ai/api/native-contacts/{contactId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'lastName' => 'Diaz-Moreno',
    'customFields' => [
        'budget' => '6000'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.teamfollowup.ai/api/native-contacts/{contactId}"

	payload := strings.NewReader("{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.teamfollowup.ai/api/native-contacts/{contactId}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.teamfollowup.ai/api/native-contacts/{contactId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"lastName\": \"Diaz-Moreno\",\n  \"customFields\": {\n    \"budget\": \"6000\"\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "_id": "nct_0123456789abcdef0123",
    "locationId": "nat_fd9e2a8dd4be4396b604",
    "firstName": "Ana",
    "lastName": "Diaz",
    "email": "ana@example.com",
    "phone": "+13125550142",
    "timezone": "America/Chicago",
    "address1": "400 W Erie St",
    "city": "Chicago",
    "state": "IL",
    "postalCode": "60654",
    "customFields": {
      "service_needed": "Implants",
      "budget": "4000"
    },
    "doNotCall": false,
    "source": "api",
    "callCount": 2,
    "lastOutcome": "TRANSFER",
    "createdAt": "2026-09-18T14:02:11.000Z",
    "updatedAt": "2026-09-20T09:14:52.000Z"
  }
}

Developer setup

Agents

TFU Live

In-call Capabilities

Campaigns

Master agent

Phone Numbers

Caller ID

Voices

Projects

Calls

Contacts

Native Contacts

Native Calendar

Analytics

Billing

Update a native contact

Authorizations

Path Parameters

Query Parameters

Body

Response