Update an entity

const options = {
  method: 'PATCH',
  headers: {'api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Acme Supplies Co',
    website: 'https://acme-supplies.example.com',
    metadata: {crmId: 'C-1'}
  })
};

fetch('https://api.melio.com/v2/entities/{entityId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.melio.com/v2/entities/{entityId}"

payload = {
    "name": "Acme Supplies Co",
    "website": "https://acme-supplies.example.com",
    "metadata": { "crmId": "C-1" }
}
headers = {
    "api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

curl --request PATCH \
  --url https://api.melio.com/v2/entities/{entityId} \
  --header 'Content-Type: application/json' \
  --header 'api-key: <api-key>' \
  --data '
{
  "name": "Acme Supplies Co",
  "website": "https://acme-supplies.example.com",
  "metadata": {
    "crmId": "C-1"
  }
}
'

HttpResponse<String> response = Unirest.patch("https://api.melio.com/v2/entities/{entityId}")
  .header("api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Acme Supplies Co\",\n  \"website\": \"https://acme-supplies.example.com\",\n  \"metadata\": {\n    \"crmId\": \"C-1\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.melio.com/v2/entities/{entityId}")

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

request = Net::HTTP::Patch.new(url)
request["api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Acme Supplies Co\",\n  \"website\": \"https://acme-supplies.example.com\",\n  \"metadata\": {\n    \"crmId\": \"C-1\"\n  }\n}"

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

package main

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

func main() {

	url := "https://api.melio.com/v2/entities/{entityId}"

	payload := strings.NewReader("{\n  \"name\": \"Acme Supplies Co\",\n  \"website\": \"https://acme-supplies.example.com\",\n  \"metadata\": {\n    \"crmId\": \"C-1\"\n  }\n}")

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

	req.Header.Add("api-key", "<api-key>")
	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))

}

{
  "id": "ent_7c9e6679-7425-40de-944b-e07fc1f90ae7",
  "type": "business",
  "externalId": "partner-biz-1234",
  "metadata": {
    "crmId": "C-1"
  },
  "createdAt": "2026-07-08T15:00:00Z",
  "updatedAt": "2026-07-08T15:10:00Z",
  "name": "Acme Supplies Co",
  "legalName": "Acme Supplies LLC",
  "businessType": "llc",
  "taxInfo": {
    "type": "ein",
    "identifierLast4": "6789"
  },
  "phoneNumber": "+12125551234",
  "contact": {
    "firstName": "Jane",
    "lastName": "Doe"
  },
  "website": "https://acme-supplies.example.com",
  "address": {
    "line1": "350 5th Ave",
    "city": "New York",
    "state": "NY",
    "postalCode": "10118",
    "countryCode": "US"
  },
  "legalAddress": {
    "line1": "350 5th Ave",
    "city": "New York",
    "state": "NY",
    "postalCode": "10118",
    "countryCode": "US"
  },
  "industry": {
    "naicsCode": "424410"
  },
  "owner": {
    "firstName": "Jane",
    "lastName": "Doe",
    "email": "[email protected]"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "VALIDATION_ERROR",
    "message": "<string>",
    "details": {}
  }
}