Payroc CloudExtend your integration

Capture a signature

View as MarkdownOpen in Claude

Note: To find out how to authorize your requests and handle errors, go to Before You Begin.

After you configure a device for Payroc Cloud, program your POS to use the Submit Signature Instruction method to send a signature instruction to the payment device.

To capture a cardholder’s signature, complete the following:

  1. Submit a signature instruction to the device.
  2. View the status of the signature instruction.
  3. View the signature.

You can also cancel a signature instruction if it hasn’t yet completed.

Before you begin

Bearer tokens

Use our Identity Service to generate a Bearer token to include in the header of your requests. To generate your Bearer token, complete the following steps:

  1. Include your API key in the x-api-key parameter in the header of a POST request.
  2. Send your request to https://identity.payroc.com/authorize.

Note: You need to generate a new Bearer token before the previous Bearer token expires.

Example request

$curl --location --request POST 'https://identity.payroc.com/authorize' --header 'x-api-key: <api key>'

Example response

If your request is successful, we return a response that contains your Bearer token, information about its scope, and when it expires.

1{
2  "access_token": "eyJhbGc....adQssw5c",
3  "expires_in": 3600,
4  "scope": "service_a service_b",
5  "token_type": "Bearer"
6}

Headers

To create the header of each POST request, you must include the following parameters:

  • Content-Type: Include application/json as the value for this parameter.
  • Authorization: Include your Bearer token in this parameter.
  • Idempotency-Key: Include a UUID v4 to make the request idempotent.
$curl
$-H "Content-Type: application/json"
$-H "Authorization: <Bearer token>"
$-H "Idempotency-Key: <UUID v4>"

Errors

If your request is unsuccessful, we return an error. For more information about errors, see Errors.

Step 1. Submit a signature instruction

To submit a signature instruction to a device, send a POST request to the Devices endpoint.

Request parameters

To create the body of your request, use the following parameters:

Request

processingTerminalIdstringRequired4-50 characters
Unique identifier that we assigned to the terminal.

Example request

POST
/v1/devices/:serialNumber/signature-instructions
1curl -X POST https://api.payroc.com/v1/devices/1850010868/signature-instructions \
2     -H "Idempotency-Key: 8e03978e-40d5-43e8-bc93-6894a57f9324" \
3     -H "Authorization: Bearer <token>" \
4     -H "Content-Type: application/json" \
5     -d '{
6  "processingTerminalId": "1234001"
7}'
Try it

Response fields

If your request is successful, we send the signature instruction to the device.

Note: The response returns a value of inProgress for the status field and an identifier for the instruction that you can use to check the status of the instruction. To get a link to view the details of the signature capture, go to Step 2.

Response

statusenumRequired
Indicates the current status of the instruction. - `canceled` – The instruction was canceled before it was completed. - `completed` – The instruction has completed. Use the link object to check the resource. - `failure` – The instruction failed. Check the errorMessage field for more information. - `inProgress` – The instruction is currently in progress.
Allowed values:
signatureInstructionIdstringRequired1-36 characters
Unique identifier that our gateway assigned to the instruction.
errorMessagestringOptional
Description of the error that caused the instruction to fail. **Note:** We return this field only if the status is `failure`.

Example response

Response
1{
2  "status": "inProgress",
3  "signatureInstructionId": "a37439165d134678a9100ebba3b29597",
4  "link": {
5    "rel": "self",
6    "method": "GET",
7    "href": "https://api.payroc.com/v1/signature-instructions/a37439165d134678a9100ebba3b29597"
8  }
9}

Step 2. View the status of a signature instruction

To check for updates to the status of the signature instruction, send a GET request to the Signature Instructions endpoint.

Before our gateway sends a response, it waits for up to a minute for the status of the instruction to change. We recommend that you keep the session open until the status of the instruction changes or the request times out.

If the status of the instruction doesn’t change, send another GET request. Our gateway waits up to a minute for the status of the instruction to change. Continue to send GET requests until the status changes.

Note: Wait until you receive a response from our gateway before you send another request.

Request parameters

To create your request, use the following parameters:

Path parameters

signatureInstructionIdstringRequired1-36 characters
Unique identifier that our gateway assigned to the signature instruction.

Example request

GET
/v1/signature-instructions/:signatureInstructionId
1curl https://api.payroc.com/v1/signature-instructions/a37439165d134678a9100ebba3b29597 \
2     -H "Authorization: Bearer <token>"
Try it

Response fields

If your request is successful, we return the details of the signature instruction, including HATEOAS links to check the signature. Use the HATEOAS links to get the signatureId, which you need in Step 3.

If the status of the signature instruction is inProgress, our gateway waits up to a minute for the status to change before it returns a response.

Response

statusenumRequired
Indicates the current status of the instruction. - `canceled` – The instruction was canceled before it was completed. - `completed` – The instruction has completed. Use the link object to check the resource. - `failure` – The instruction failed. Check the errorMessage field for more information. - `inProgress` – The instruction is currently in progress.
Allowed values:
signatureInstructionIdstringRequired1-36 characters
Unique identifier that our gateway assigned to the instruction.
errorMessagestringOptional
Description of the error that caused the instruction to fail. **Note:** We return this field only if the status is `failure`.

Example response

Response
1{
2  "status": "completed",
3  "signatureInstructionId": "a37439165d134678a9100ebba3b29597",
4  "link": {
5    "rel": "signature",
6    "method": "GET",
7    "href": "https://api.payroc.com/v1/signatures/M2MJOG6O2Y"
8  }
9}

Step 3. View the signature capture

To view the signature that the payment device captured, send a GET request to the Signatures endpoint.

Request parameters

To create your request, use the following parameters:

Path parameters

signatureIdstringRequired=10 characters
Unique identifier that we assigned to the signature.

Example request

GET
/v1/signatures/:signatureId
1curl https://api.payroc.com/v1/signatures/JDN4ILZB0T \
2     -H "Authorization: Bearer <token>"
Try it

Response fields

If your request is successful, we return the details of the signature.

Response

signatureIdstringOptional
Unique identifier that we assigned to the signature.
processingTerminalIdstringOptional
Unique identifier of the terminal that the signature is linked to.
createdOndateOptional
Date that the device captured the signature. The format of this value is **YYYY-MM-DD**.
contentTypestringOptional
MIME type that indicates the format of the image file.
signaturestringOptional
Image data for the signature. Our gateway returns the signature as a Base64-encoded value.

Example response

Response
1{
2  "signatureId": "JDN4ILZB0T",
3  "processingTerminalId": "1024",
4  "createdOn": "2024-07-02",
5  "contentType": "image/png",
6  "signature": "iVBORw0KGgoAAAANSUhEUgAAASwAAABkCAYAAAA8AQ3AAAAJT0lEQVR4Xu3dW4hN7x/H8UnOF5ScSaGcY4hyvJiSQ6RE3FDIkEuHNDdcKacc0pSQiCuUw4UL5YKcipGQclYkJKcccv7+/58ne35jzZ5t7b3XWns/a96v2s2etdfMYDyf/Xyf51nPqjDk9Pr1a7t06ZLt2bPH1qxZY7NmzbJBgwZZ69atrbKy0qqrq622ttbq6urs69evwS/P27Nnz2zYsGHBwwD+ryJ4wDffvn2z48eP29y5c12IVFRUZH20adPGzp07F/xy58ePH3bnzh07ceKEbd682RYvXmxjx461Tp06uYee65he0zk699OnTy6kFFYKLYVXu3btig6xBQsW2Pr164OHAZjHgaXwUTAoUKqqqmz//v32/v374Gn1dH7Xrl3/Cq3v37/bxo0bXZip16Tek3pR6k2pV6XeVT4UTsEQ0/d+/Phx8NSsrl69ar169XJhCKAxrwLr9u3bVlNTY3369LERI0bYli1bXAkVVsPQOn/+vA0ZMsRmzpxpT548CZ4aGfXKpk+fHjyc1cSJE+3AgQPBwwD+KPvAUiApmBRQCioFloKrUKdOnbK2bdtat27dXCkZN5Wbw4cPtyNHjgRf+svRo0dt1KhR9uvXr+BLAP4oy8BSaacST6WeSj6VV02NP4X1+/dv27dvn+thzZ8/37p06VL09wzrypUrrtRrqmRVKdm3b9/E/jyAr8ousA4ePOh6QBpEVw9Ig+rFunnzpo0fP9499FwUDhpfSsqKFSvcIxuVjbNnzw4eBhBQNoH1+fNnW7RokQ0dOtTNwkXh48ePbhBdvSr1rtTLakizh0lR70q9LPW2Gnr16pV17tzZHjx48NdxAI0l12JzUEApqBRYCq4oqHemMS99z6Zm+5IMLNE4lsazNK6VsXz5clu1alWDswA0JdkWm4VKQI0n6WMUNOOnmT/NAGomMJekA0s0Y6gSUDR5oMH/d+/eBc4CkE3yLfaPOErAe/fuufEvra3SGqt/KUVgaU1WZuxsypQpbs0WgHCSb7EWTwmoMmvMmDG2e/fu4EtNKkVgiX7u6dOnbfDgwX+VhwByS7zFRl0CZqxbt85mzJgRPJxTKQNLYaXQAhBeYi02jhIw4/Lly9ajRw97+fJl8KWcShlYKgcB5CeRFhtHCZihpQv9+/e3kydPBl/6p1IElgbY9XOLWa0PNFext9i4SsCMpUuXuke+dAmMdndImpYwlCIogTSIreXEWQJmqFel3pV6WfnS2iwt2EySFofqZxJYQGFiaTlxloAZGq/SuJXGrwpx9+5dGzhwYPBwrHT5jdZgEVhAYSJvObpGTxvZxVUCZmhGUDODhbp48aJNmDAheDg2+nfRBc4fPnwoSSkKpEGkgZVtk7w4aK2V1lwVs4ZJ5aQ27EuCxsu0dYy2kNEmfSNHjgyeAiCEyAIrqbASrRTXqvZiaPuaJUuWBA/HQpvyaXM+UdgWMkkAIKLASjKsJIoxII0lrV27Nng4ctruWLs0qGclCqt8VuMD+E/RLT/psJIoAkthlbkIOQ5v3751Zee4cePczGCuG2SEebRq1arRsYavAc1BUS2/FGElaqTFUjmosjAquqj50KFDtmzZMrdTRIcOHWzq1KnWsmVLO3bsmH358sXtLNq+ffu876TzL1H8ewA+KPh/eqnCSqJooBpwL2R1vGgjwBs3btiuXbts3rx51rNnT/fQcx3Tazrn6dOn1rt37/qvi2vAPYp/D8AHBf1PL2VYSRQNVEsatLQhDPWO9HfdsGGDTZs2zfWe1ItSb0q9qqZu46U1YrqnYUYcA+76cyW51TNQSnm3/FKHlWg8SDccvXDhQvCl0LRoVItHG8p1l2cFj46pV6bxqTC0w6j2ps+IesC9HH4XQJLyCqxyaSBv3ryxHTt2uF6OHnquY2Fk7vKsXpLusBzmLs+Frvfatm2brVy5sv5zlYOZ2cJilcvvAkhS6MAq1waiXpZ6W2Fn4XTegAEDrEWLFrZ69eqC7/IchsJKoSUKPu2GGsWAe7n+LoC4hQqstDWQw4cPJ7LKXeWgykJdT6lrK6O4XCltvwsgH/8MrDQ2EIWVQituKi818K6LwPUoxs+fP23r1q3uOs00/S6AfOQMrDSGlS4+7tixo/sYNy1p2L59u+tdFbNrxfXr1921iNqltKkZSaA5aDKwHj16lMp386TKQdF4mZYcFLofmEJOM5O6FZiWTwDNXZOBpXdzlSBpk1Q5WKwzZ8647Wg0oRDHhADgo6yBpXdzlSAaN0mTJMvBQimcFFIKK4UWgP80Ciw1mO7du7txk7RJshwshN4oVP6pDCxmzAtIq0aBtXDhQtdgmqI7Kt+6dcttRqcdP+fMmeMGlZPebrgQ5VoOaiBdJbh6tWl8owCi8ldgqQTp169f1nd37Zq5c+dON4isgFJQKbAUXAqwMLeGL6VyLAd1iU9NTY1bUKrxwrSV4EDU6gNLIaWwyjZu8vDhQ5s0aZJ76LmPyqkc1MXUmzZtcrc/0wXUz58/D54CIIv6wFIZqHKwoUyvSg1LH/W5r8qhHNQ1iXv37nU7kGormmK3eQaaGxdYGjfRQHvD6fM09KoyVAaqlC1lOajSWdcwTp482a5duxZ8GUAIFRo30WBvZmFi5mJijav43qvKKGU5ePbsWRs9erR76DmAwlVosLeqqqrg7Vp8UIpyUL0o9abUq1LvCkDxKnT5SBQb4pWrpGcHNS6l8SmNU2m8qtC9tAA0VqE9ohpuMpc2SZWDmunTjJ8mKDQDqJlAANFyPawXL14Ej6dGHOWgNuGrq6uz2tpaq66utsrKSjeorzVVYbdPBpC/Rivd00ZBcv/+/eDh0LKFk3ax0Ed9ruN6PYqdRAHklvrAUrkbtuQlnIDylvrAUrmbz37vhBNQvlIfWADSg8AC4A0CC4A3CCwA3iCwAHiDwALgDQILgDcILADeILAAeIPAAuANAguANwgsAN4gsAB4g8AC4A0CC4A3CCwA3iCwAHiDwALgDQILgDcILADeILAAeIPAAuANAguANwgsAN4gsAB4g8AC4A0CC4A3CCwA3iCwAHiDwALgDQILgDcILADeILAAeIPAAuANAguANwgsAN4gsAB4g8AC4A0CC4A3CCwA3iCwAHiDwALgDQILgDcILADeILAAeIPAAuANAguANwgsAN4gsAB4g8AC4A0CC4A3/gdbd1ZfSyjQ+QAAAABJRU5ErkJggg=="
7}

(Optional) Cancel a signature instruction

To cancel a signature instruction, send a DELETE request to the Signature Instructions endpoint.

Note: You can cancel a signature instruction only if its status is inProgress.

Request parameters

To create your request, use the following parameters:

Path parameters

signatureInstructionIdstringRequired1-36 characters
Unique identifier that our gateway assigned to the signature instruction.

Example request

Path parameters

signatureInstructionIdstringRequired1-36 characters
Unique identifier that our gateway assigned to the signature instruction.

Response

If your request is successful, we cancel the signature instruction.