Replace Beneficiary PII

Replaces the PII stored in Basis Theory for this beneficiary. The entire PII blob is replaced — partial updates are not supported, because tokens are immutable.

Supply the detail block matching the beneficiary’s type (individual or business). The display_name on the beneficiary record is automatically re-derived from the new PII.

PII is write-only for machine credentials. Your system is the source of the data, so you can deposit and replace it — but there is no companion GET on this surface: detokenized PII readback exists only in the merchant dashboard, restricted to admin users, with every access recorded in the audit log (PCI DSS 10.2.1). A leaked API credential therefore cannot harvest beneficiary identities.

PUT

beneficiaries

{id}

pii

Replace beneficiary PII

curl --request PUT \
  --url https://api.antonpayments.com/v1/beneficiaries/{id}/pii \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'DPoP: <api-key>' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "end_user_ip": "<string>"
}
'

const options = {
  method: 'PUT',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    DPoP: '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({end_user_ip: '<string>'})
};

fetch('https://api.antonpayments.com/v1/beneficiaries/{id}/pii', 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.antonpayments.com/v1/beneficiaries/{id}/pii",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'end_user_ip' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "DPoP: <api-key>",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($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.antonpayments.com/v1/beneficiaries/{id}/pii"

	payload := strings.NewReader("{\n  \"end_user_ip\": \"<string>\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("DPoP", "<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))

}

{
  "data": {
    "id": "ben_01HX8Z9K0M2N3P4Q5R6S7T8UA1",
    "merchant_id": "mer_01HX8Z9K0M2N3P4Q5R6S7T8UZZ",
    "type": "individual",
    "status": "active",
    "display_name": "Jane Smith",
    "country": "GB",
    "external_ref": "contractor-1042",
    "risk_score": 120,
    "risk_tier": "LOW",
    "metadata": {
      "department": "engineering"
    },
    "created_at": "2026-04-15T14:30:00Z",
    "updated_at": "2026-04-15T14:30:00Z"
  }
}

Authorizations

DPoP

string

header

required

Per-request DPoP proof JWT (RFC 9449). MUST accompany the Authorization: DPoP <access_token> header on every protected operation. The proof is signed by the merchant's private DPoP key and carries htm, htu, iat, jti, and ath claims.

Headers

Idempotency-Key

string

required

Unique key identifying this operation. Sending the same key twice returns the original response instead of creating a duplicate. Keys are retained for 24 hours.

Maximum string length: 255

Path Parameters

string

required

Pattern: ^ben_[a-zA-Z0-9]+$

Body

application/json

Replacement PII. Provide the detail block matching the beneficiary's type. The entire PII blob is replaced — partial updates are not supported.

individual

object

PII for an individual beneficiary. Tokenized on creation.

Show child attributes

business

object

PII for a business beneficiary. Tokenized on creation.

Show child attributes

end_user_ip

string

Response

Beneficiary PII replaced. Returns the updated beneficiary record.

data

object

required

A person or business you pay. PII is tokenized in Basis Theory on creation — raw identifiers are never returned in this response. Use GET /v1/beneficiaries/{id}/pii to retrieve detokenized PII for a beneficiary you own.

Show child attributes

Example:

{
  "id": "ben_01HX8Z9K0M2N3P4Q5R6S7T8UA1",
  "merchant_id": "mer_01HX8Z9K0M2N3P4Q5R6S7T8UZZ",
  "type": "individual",
  "status": "active",
  "display_name": "Jane Smith",
  "country": "GB",
  "external_ref": "contractor-1042",
  "risk_score": 120,
  "risk_tier": "LOW",
  "metadata": { "department": "engineering" },
  "created_at": "2026-04-15T14:30:00Z",
  "updated_at": "2026-04-15T14:30:00Z"
}

⌘I

Replace beneficiary PII

curl --request PUT \
  --url https://api.antonpayments.com/v1/beneficiaries/{id}/pii \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'DPoP: <api-key>' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "end_user_ip": "<string>"
}
'

const options = {
  method: 'PUT',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    DPoP: '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({end_user_ip: '<string>'})
};

fetch('https://api.antonpayments.com/v1/beneficiaries/{id}/pii', 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.antonpayments.com/v1/beneficiaries/{id}/pii",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'end_user_ip' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "DPoP: <api-key>",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($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.antonpayments.com/v1/beneficiaries/{id}/pii"

	payload := strings.NewReader("{\n  \"end_user_ip\": \"<string>\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("DPoP", "<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))

}

{
  "data": {
    "id": "ben_01HX8Z9K0M2N3P4Q5R6S7T8UA1",
    "merchant_id": "mer_01HX8Z9K0M2N3P4Q5R6S7T8UZZ",
    "type": "individual",
    "status": "active",
    "display_name": "Jane Smith",
    "country": "GB",
    "external_ref": "contractor-1042",
    "risk_score": 120,
    "risk_tier": "LOW",
    "metadata": {
      "department": "engineering"
    },
    "created_at": "2026-04-15T14:30:00Z",
    "updated_at": "2026-04-15T14:30:00Z"
  }
}

Overview

Cross-Cutting

Reference Data

Beneficiaries

Instruments

Intelligence

Verifications

Payouts

Batches

Balances

Accounts

Webhooks

Pricing

FX

Corridors

Replace Beneficiary PII

Authorizations

Headers

Path Parameters

Body

Response