---
title: signatures.sign | Doing Work API
description: Sign a document after reading it, typing your name and agreeing to sign electronically. Hosted page only; agents can never sign.
url: https://doingwork.work/docs/reference/signatures-sign/
---

# signatures.sign

Sign a document after reading it, typing your name and agreeing to sign electronically. Hosted page only; agents can never sign.

|  |  |
|---|---|
| Who | Hosted page only (a person does it in the browser) |
| REST | `POST /v1/signatures/sign` |
| MCP tool | Not an MCP tool |
| Writes | yes, send an Idempotency-Key |
| Area | [Field work (checklists, forms, time, notes, change orders, subcontractors)](https://doingwork.work/docs/reference/#field-work-checklists-forms-time-notes-change-orders-subcontractors) |

## When to use it

Ask a customer, or someone in the shop, to sign a document: contract text you supply (for example a service agreement) or a PDF already stored on the job. signatures.request returns a sign_url on the hosted pages; send it to the signer yourself.

## What to tell the owner

Send the person the link. They finish this step themselves on the page; you never do it for them.

## Input

| Field | Type | Required |
|---|---|---|
| `t` | string | yes |
| `document_sha256` | string | yes |
| `signer_name` | string | yes |
| `esign_consent` | string (one of yes) | yes |

## Example

```http
POST https://doingwork.work/v1/signatures/sign
content-type: application/json
Idempotency-Key: 3f1c...

{
  "t": "...",
  "document_sha256": "...",
  "signer_name": "...",
  "esign_consent": "yes"
}
```

## Output

| Field | Type | Always there |
|---|---|---|
| `signature_id` | string (uuid) | yes |
| `signature_request_id` | string (uuid) | yes |
| `document_sha256` | string | yes |
| `consent_sha256` | string | yes |
| `signed_at` | string (date-time) | yes |

```json
{
  "signature_id": "00000000-0000-4000-8000-000000000000",
  "signature_request_id": "00000000-0000-4000-8000-000000000000",
  "document_sha256": "...",
  "consent_sha256": "...",
  "signed_at": "..."
}
```

## Errors

| Code | Status | What to do |
|---|---|---|
| `invalid_input`, `invalid_token`, `rate_limited` |  | Can happen on any call. See [errors](https://doingwork.work/docs/errors/). |