`sponsorships.packages.save`

Create or revise a reusable sponsorship package using existing invoice templates where selected. Store benefits and optional price without setting any tax rate or issuing an invoice. Revision checked, idempotent and audited.

POST/api/v1/accounting/sponsorships.packages.save

Permissions

accounting:readaccounting:write

Who can call it

admin, finance

Retries

Idempotency key required, with expectedRevision

MCP

accounting_sponsorships_packages_save

Fields

idstring (ID)
The record's ID.
expectedRevisionintegerRequired
The record's current revision, from the last time you read it. If someone changed the record since, the request is refused with a conflict so you can reload and check before trying again.
0 to 9007199254740991
namestringRequired
A display name.
1–200 characters
kindenumRequired
Which kind of record or job this is.
hackathonretreateventinitiativeother
descriptionstringRequired
A short description.
at most 2000 characters
currencystringRequired
Three-letter currency code, such as CAD or USD.
priceMinorstring or nullRequired
An amount in cents (the currency's smallest unit), written as a whole-number string such as "1250" for $12.50.
benefitsarray of objectsRequired
at most 50 items
invoiceTemplateobject or null
Default null
archivedboolean
Whether the record is archived.
Default false
idempotencyKeystringRequired
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.
8–200 characters

curl https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "expectedRevision": 3,
  "name": "Synthetic Ventures Inc.",
  "kind": "hackathon",
  "description": "Synthetic example from the docs",
  "currency": "CAD",
  "priceMinor": "1",
  "benefits": [
    {
      "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
      "description": "Synthetic example from the docs",
      "performanceFrom": "2026-09-30",
      "performanceTo": "2026-09-30",
      "state": "unknown",
      "sources": [
        {
          "kind": "receipt_original",
          "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
          "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
          "quote": "USD"
        }
      ]
    }
  ]
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    "expectedRevision": 3,
    "name": "Synthetic Ventures Inc.",
    "kind": "hackathon",
    "description": "Synthetic example from the docs",
    "currency": "CAD",
    "priceMinor": "1",
    "benefits": [
      {
        "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
        "description": "Synthetic example from the docs",
        "performanceFrom": "2026-09-30",
        "performanceTo": "2026-09-30",
        "state": "unknown",
        "sources": [
          {
            "kind": "receipt_original",
            "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
            "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
            "quote": "USD"
          }
        ]
      }
    ]
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os
import uuid

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "expectedRevision": 3,
        "name": "Synthetic Ventures Inc.",
        "kind": "hackathon",
        "description": "Synthetic example from the docs",
        "currency": "CAD",
        "priceMinor": "1",
        "benefits": [
            {
                "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
                "description": "Synthetic example from the docs",
                "performanceFrom": "2026-09-30",
                "performanceTo": "2026-09-30",
                "state": "unknown",
                "sources": [
                    {
                        "kind": "receipt_original",
                        "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
                        "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
                        "quote": "USD",
                    },
                ],
            },
        ],
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Response

{
  "data": { … }
}

Try it

Checks your input with this action’s real schema and answers like the API, with synthetic data. No key needed, and nothing changes.

Input

POST/api/v1/accounting/sponsorships.packages.save

curl https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "expectedRevision": 3,
  "name": "Synthetic Ventures Inc.",
  "kind": "hackathon",
  "description": "Synthetic example from the docs",
  "currency": "CAD",
  "priceMinor": "1",
  "benefits": [
    {
      "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
      "description": "Synthetic example from the docs",
      "performanceFrom": "2026-09-30",
      "performanceTo": "2026-09-30",
      "state": "unknown",
      "sources": [
        {
          "kind": "receipt_original",
          "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
          "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
          "quote": "USD"
        }
      ]
    }
  ]
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    "expectedRevision": 3,
    "name": "Synthetic Ventures Inc.",
    "kind": "hackathon",
    "description": "Synthetic example from the docs",
    "currency": "CAD",
    "priceMinor": "1",
    "benefits": [
      {
        "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
        "description": "Synthetic example from the docs",
        "performanceFrom": "2026-09-30",
        "performanceTo": "2026-09-30",
        "state": "unknown",
        "sources": [
          {
            "kind": "receipt_original",
            "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
            "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
            "quote": "USD"
          }
        ]
      }
    ]
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os
import uuid

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/sponsorships.packages.save",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "expectedRevision": 3,
        "name": "Synthetic Ventures Inc.",
        "kind": "hackathon",
        "description": "Synthetic example from the docs",
        "currency": "CAD",
        "priceMinor": "1",
        "benefits": [
            {
                "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
                "description": "Synthetic example from the docs",
                "performanceFrom": "2026-09-30",
                "performanceTo": "2026-09-30",
                "state": "unknown",
                "sources": [
                    {
                        "kind": "receipt_original",
                        "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
                        "sha256": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
                        "quote": "USD",
                    },
                ],
            },
        ],
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Fields

Fields inside benefits

Fields inside invoiceTemplate

Example

Try it