# reconcile

URL: /business/nouns/transaction/reconcile · Id: `verb:Transaction.reconcile` · Call: `await $.Transaction.reconcile({ … })` (SDK) or the `do` tool at `https://api.sb/mcp`. Inputs says what to pass, Outputs what returns, When it waits who approves.

> Reconcile matches a Transaction on a payment rail to the ledger Entries it settles.

Reconcile matches a [Transaction](/business/nouns/transaction) on a payment rail to the ledger [Entries](/business/nouns/entry) it settles.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `transaction` | [Transaction](/business/nouns/transaction) | Yes | The Transaction to match. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `transaction` | [Transaction](/business/nouns/transaction) | Yes | The reconciled Transaction. |

## Effects
- Emits [`Transaction.reconciled`](/business/events/Transaction.reconciled).
- Performed by the [Finance Lead](/agents/finance/finance-lead).
- Two-way: it runs at once, in the `try`, `send` and `do` modes.
- Opens a Task when no Entry matches.

## Refuses when
| Check | Error | Fix | Then call |
| --- | --- | --- | --- |
| The key is valid, but its scopes do not allow this operation. | [`forbidden`](/code/api/errors/forbidden) | Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them. | [Transaction.reconcile](/business/nouns/transaction/reconcile) |
| The record is not in a state that allows this Verb, so the call is refused. | [`refused`](/code/api/errors/refused) | Read the record, run the Verb that moves it to an allowed state, then retry. | [Transaction.reconcile](/business/nouns/transaction/reconcile) |

## When it waits
| Gate | Default |
| --- | --- |
| Decision class | Low: two-way, nothing at stake |
| [Delay window](/systems/trust-and-governance/controls/one-way-windows) | None: it runs once review passes. |
| Limit | The call [Limit](/business/nouns/limit) of the [Permission](/business/nouns/permission) it runs under. |
| Over the Limit | It waits `pending` for an [Approval](/business/nouns/approval) from the [Founder](/agents/founding/founder). Approved, it runs; refused, it ends `refused` with [`limit-exceeded`](/code/api/errors/limit-exceeded); unanswered by its deadline, it ends `canceled`. |

## Example

**Ask**

```text
Reconcile the latest transaction.
```

**API**

```bash
curl -X POST https://api.sb/kilnbakery.com/transactions/transaction_1/reconcile \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/kilnbakery.com",
  "transaction": {
    "$id": "https://api.sb/kilnbakery.com/transactions/transaction_1",
    "$type": "Transaction",
    "kind": "charge",
    "amount": {
      "amount": 9,
      "currency": "USD"
    }
  },
  "action": {
    "$id": "https://api.sb/kilnbakery.com/actions/action_1",
    "operation": "Transaction.reconcile",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/kilnbakery.com/actions/action_1"
  }
}
```

**SDK**

```ts
import { $ } from 'startup-builder'

const transaction = await $.Transaction.reconcile({ transaction: 'transaction_1' })
```

**CLI**

```bash
npx startup-builder do Transaction.reconcile --json '{"transaction":"transaction_1"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Transaction.reconcile({ transaction: 'transaction_1' })"
  }
}
```