# Ledger by Novadyne – Create Transaction

> Ledger by Novadyne – Create Transaction is a paid API for AI agents from ledger-api.novadyne.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Records a double-entry ledger transaction with a date, journal entries, and optional description, returning the created transaction ID and date.

## Facts

- Endpoint: GET https://ledger-api.novadyne.ai/ledger/transactions
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ledger-by-novadyne-create-transaction-be4f6e9e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gKsf5iMPqraDNNtIf2eJL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ledger-by-novadyne-create-transaction-be4f6e9e
```

Example prompt: Add a double-entry ledger transaction for 2025-06-01 with a debit of $500 to Office Supplies and a credit of $500 to Cash, described as 'Office supply purchase'.

## When to prefer this

Choose this endpoint when you need to persist double-entry journal transactions to a hosted ledger with built-in x402 micropayment authorization and Ed25519 capability-token access control, and you want a lightweight per-call pricing model ($0.002 USDC) rather than a subscription-based accounting SaaS.

## Known failure modes

- Missing required 'date' field returns a 400 validation error
- Malformed or unbalanced 'entries' array (debits ≠ credits) may return a 422 error
- Invalid date format (not YYYY-MM-DD) causes a 400 bad request
- Payment failure via x402 micropayment returns a 402 Payment Required response
- Expired or invalid Ed25519 capability token returns a 401 Unauthorized
- Empty entries array may be rejected with a validation error

## How this service works

Double-entry ledger API with x402 micropayments and Ed25519 capability tokens.

## Output

Returns a JSON object containing the newly created transaction's integer ID and the date it was recorded, confirming the entry was successfully stored in the ledger.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "date",
  "entries"
 ],
 "properties": {
  "date": {
   "type": "string",
   "description": "YYYY-MM-DD"
  },
  "entries": {
   "type": "array"
  },
  "description": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": "integer"
  },
  "date": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ledger-by-novadyne-create-transaction-be4f6e9e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ledger-api.novadyne.ai](https://www.zero.xyz/host/ledger-api.novadyne.ai/llms.txt)