Rebuild balance projection

Recompute the account balance projection from the ledger lines and report whether it already matched.

Outcome

Recompute the account balance projection from the ledger lines and report whether it already matched.

Before you start

Verify the intended environment, authenticated identity and specifically approved organization context.
The published application permission is ledger:write. Discover the exact granted canonical Books workspace and bind it separately from action input.
Approve the actual mutation, accounting inputs and any provider/recipient effects before CLI --confirm or MCP confirm:true. Fixture identifiers and simulated provider responses authorize no live operation.

Discover the target

topolo whoami --json
topolo actions get app_topolo_books.ledger.balances.rebuild --detail --json
topolo resources topolo-books --json
topolo workspaces list topolo-books --json

Set BOOKS_WORKSPACE_ID to the exact granted workspace returned by discovery.

Request

POST /api/ledger/balances/rebuild

Inspect and test this action. Save the reviewed input as payload.json; supply credential/resource context separately.

Input fields

Use an empty input object. Credential and resource context are separate.

Inspect nested fields and the complete input schema.

Effects

Recomputes the balance projection from the ledger lines. It changes no ledger event and is safe to repeat; the response says whether the projection already matched.

Interpret the response

This result reports rebuilt-account and journal counts, not a new identifier. Discover actual account ids through accounts.list and verify their balances separately.

Call app_topolo_books.ledger.verify and confirm ok is true.

Inspect the success schema. CLI/MCP add their own transport envelope; CLI --detail requests the full result.

Worked examples

Actual Books route handlers and the exported Worker were exercised against five local SQLite D1 concern databases with all committed migrations, the real posting Durable Object and local R2. Route captures use synthetic verified Auth; Worker captures use synthetic Auth transports. Nexus, Brand, Notify, Pay, Mercury and Xero responses are explicitly simulated at the provider transport boundary. Captures prove local request/response behavior and canonical SDK projection, not live bank access, payment movement, email delivery, provider eligibility, tax compliance, encrypted custody, scheduled execution, deployment or production completion. Fixture identities, credentials, addresses and records authorize no live operation.

Run a reviewed request

Save the input from the selected worked example as payload.json. Validate and inspect the plan before calling the action; refused examples demonstrate errors and are not instructions to execute.

CLI:

topolo actions validate app_topolo_books.ledger.balances.rebuild --data @payload.json --json
topolo actions plan app_topolo_books.ledger.balances.rebuild --resource-type workspace --resource-id "$BOOKS_WORKSPACE_ID" --data @payload.json --json
topolo actions call app_topolo_books.ledger.balances.rebuild --resource-type workspace --resource-id "$BOOKS_WORKSPACE_ID" --data @payload.json --confirm --detail --json

MCP tool and arguments for the first successful example:

{
  "tool": "topolo_call_action",
  "arguments": {
    "actionId": "app_topolo_books.ledger.balances.rebuild",
    "input": {},
    "resourceType": "workspace",
    "resourceId": "<exact granted workspace id>",
    "confirm": true,
    "detail": true
  }
}

Refused response · auth_error

Input · payload.json:

{}

Captured response · HTTP 401

{
  "error": "API key validation failed"
}

HTTP 401. SDK error code auth_error. Authenticate in the intended organization again. Verify whoami and the exact Books application/workspace binding before retrying; do not switch identity to work around a refusal.

Successful response · HTTP 200

Input · payload.json:

{}

Captured response · HTTP 200

{
  "accounts": 2,
  "periods": 1,
  "matchedBefore": true
}

HTTP 200. Call app_topolo_books.ledger.verify and confirm ok is true.

Verify the result

Call app_topolo_books.ledger.verify and confirm ok is true.

Errors and recovery

auth_error (HTTP 401): Authenticate in the intended organization again. Verify whoami and the exact Books application/workspace binding before retrying; do not switch identity to work around a refusal.

These are observed local refusals. Shared authentication, schema validation and resource authorization can also refuse before the route. Preserve the actual error, details and request id.

Recovery boundary

Nothing to undo: the projection is derived from the ledger and can be rebuilt again at any time.

Get trial balance: Every account holding a balance at the date, each on one side only: debitMinor carries a debit balance, creditMinor a credit balance, and the other is zero. Accounts that net to nothing are left out. totalDebitMinor and totalCreditMinor are the sums of those balances and must agree, which is what balanced reports. These are balances, not turnover: they do not add up everything ever posted to an account, which would count both sides of every entry and count an expense again when a year-end close reverses it.