# uploads.inline

Add a receipt, invoice or original email in one call, for clients that can't upload to a link: filename, mimeType, contentBase64 (the file's bytes in base64, at most 2 MB), idempotencyKey, and optional receiptFor (the purchase it belongs to, as in uploads.prepare) and paymentAccountId. Oatmilk checks the bytes, stores them privately and starts processing; it returns submissionId and jobId. Retrying with the same key and file is safe. Larger files use uploads.prepare and uploads.confirm.

`POST /api/v1/accounting/uploads.inline`

Permissions: `accounting:read`, `accounting:write` · Roles: admin, finance, contributor · Idempotency key required

MCP tool: `accounting_uploads_inline`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `filename` | string | Yes | The file's name, including its extension. 1–255 characters. |
| `mimeType` | enum | Yes | The file's type, such as image/jpeg or application/pdf. One of: `image/jpeg`, `image/png`, `image/webp`, `image/heic`, `image/heif`, `application/pdf`, `message/rfc822`. |
| `contentBase64` | string | Yes | The file's exact bytes, encoded as base64. 4–2796204 characters. |
| `claimedMetadata` | map |  |  |
| `idempotencyKey` | string | Yes | Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match. 8–160 characters. |
| `paymentAccountId` | string (ID) |  | The card or account the purchase was paid with, from accounts.list. |
| `receiptFor` | string (ID) |  | The ID of the purchase this receipt is for, from attention.mine or entries.list. The upload is refused unless that purchase still needs a receipt. |
| `receiptBatchId` | string (ID) |  | The ID of the related record. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/uploads.inline \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "filename": "receipt.jpg",
  "mimeType": "image/jpeg",
  "contentBase64": "SGVsbG8sIE9hdG1pbGsh"
}'
```

## Example response

```json
{
  "data": {
    "submissionId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
    "jobId": "2b3c4d5e-6f7a-4b8c-9d0e-1f2a3b4c5d6e",
    "generation": 1,
    "status": "queued",
    "sizeBytes": 182734
  }
}
```

Reference page: https://app.getoatmilk.com/docs/api/uploads.inline