get_transaction
Retrieve detailed information for a specific YNAB transaction, including subtransactions for split transactions, using budget and transaction IDs.
Instructions
Get a single transaction with all details including subtransactions.
Args:
budget_id: The ID of the budget (use 'last-used' for default budget)
transaction_id: The ID of the transaction to retrieve
Returns:
JSON string with the transaction details including subtransactions if it's a split transactionInput Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| budget_id | Yes | ||
| transaction_id | Yes |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |
Implementation Reference
- src/ynab_mcp/server.py:511-524 (handler)MCP tool handler function registered with @mcp.tool(). Wraps YNABClient.get_transaction and serializes result to JSON string.
@mcp.tool() async def get_transaction(budget_id: str, transaction_id: str) -> str: """Get a single transaction with all details including subtransactions. Args: budget_id: The ID of the budget (use 'last-used' for default budget) transaction_id: The ID of the transaction to retrieve Returns: JSON string with the transaction details including subtransactions if it's a split transaction """ client = get_ynab_client() result = await client.get_transaction(budget_id, transaction_id) return json.dumps(result, indent=2) - Supporting method in YNABClient that performs the actual API call to retrieve a single transaction by ID, formats response including subtransactions, and handles errors.
async def get_transaction( self, budget_id: str, transaction_id: str, ) -> dict[str, Any]: """Get a single transaction with all details including subtransactions. Args: budget_id: The budget ID or 'last-used' transaction_id: The transaction ID to retrieve Returns: Transaction dictionary with full details """ try: url = f"{self.api_base_url}/budgets/{budget_id}/transactions/{transaction_id}" result = await self._make_request_with_retry("get", url) txn = result["data"]["transaction"] # Format subtransactions if present subtransactions = [] if txn.get("subtransactions"): for sub in txn["subtransactions"]: subtransactions.append( { "id": sub.get("id"), "amount": sub["amount"] / MILLIUNITS_FACTOR if sub.get("amount") else 0, "memo": sub.get("memo"), "payee_id": sub.get("payee_id"), "payee_name": sub.get("payee_name"), "category_id": sub.get("category_id"), "category_name": sub.get("category_name"), } ) return { "id": txn["id"], "date": txn["date"], "amount": txn["amount"] / MILLIUNITS_FACTOR if txn.get("amount") else 0, "memo": txn.get("memo"), "cleared": txn.get("cleared"), "approved": txn.get("approved"), "account_id": txn.get("account_id"), "account_name": txn.get("account_name"), "payee_id": txn.get("payee_id"), "payee_name": txn.get("payee_name"), "category_id": txn.get("category_id"), "category_name": txn.get("category_name"), "transfer_account_id": txn.get("transfer_account_id"), "subtransactions": subtransactions if subtransactions else None, } except Exception as e: raise Exception(f"Failed to get transaction: {e}") from e - src/ynab_mcp/server.py:511-511 (registration)@mcp.tool() decorator registers the get_transaction function as an MCP tool.
@mcp.tool()