> ## Documentation Index
> Fetch the complete documentation index at: https://apidoc.sign.plus/llms.txt
> Use this file to discover all available pages before exploring further.
# Add Signature annotation
A **Signature Annotation** serves as a designated placeholder within a document where the recipient is required to sign. You can include one or more signature annotations in a document. These annotations can be added alongside other types of annotations, such as text fields, date fields, and checkboxes. For further details, visit [Annotation](/concepts/annotation).
Before adding the annotation, you need to define your signature in the Sign.Plus platform.
You will also need to add a document to the envelope and set a recipient using signing steps. You will get the `recipient_id` from the response of the signing steps and the `document_id` from the response of the document upload. Note that you can only add a signature annotation on a recipient that has a `SIGNER` role.
Coordinates of the annotation are passed in % of the page dimensions (from 0 to 100) counting from the top left corner
```bash Add annotation theme={null}
curl --request POST \
--url https://restapi.sign.plus/v2/envelope/{envelope_id}/annotation \
--header 'Authorization: Bearer ' \
--header 'Content-Type: application/json' \
--data '{
"recipient_id": "",
"document_id": "",
"page": 1,
"x": 50,
"y": 20,
"width": 20,
"height": 60,
"required": true,
"type": "SIGNATURE",
"signature": {
"id": ""
},
"initials": null,
"text": null,
"datetime": null,
"checkbox": null
}'
```
On success, the API will return the inserted annotation.
Get endpoint details
A **Signature Annotation** serves as a designated placeholder within a document where the recipient is required to sign. You can include one or more signature annotations in a document. These annotations can be added alongside other types of annotations, such as text fields, date fields, and checkboxes. For further details, visit [Annotation](/concepts/annotation).
Before adding the annotation, you need to define your signature in the Sign.Plus platform.
You will also need to add a document to the envelope and set a recipient using signing steps. You will get the `recipient_id` from the response of the signing steps and the `document_id` from the response of the document upload. Note that you can only add a signature annotation on a recipient that has a `SIGNER` role.