---
title: "billing.credit-sandbox-grant-result@1 · OpenVibe.Services"
canonical: "https://openvibe.services/docs/contracts/billing.credit-sandbox-grant-result"
updated: null
---

# billing.credit-sandbox-grant-result@1 · OpenVibe.Services

HTML: [billing.credit-sandbox-grant-result@1 · OpenVibe.Services](https://openvibe.services/docs/contracts/billing.credit-sandbox-grant-result)

# BillingCreditSandboxGrantResult `billing.credit-sandbox-grant-result@1`

Generated at 2026-11-13 06:25:48 UTC from [`openvibe-contracts v0.419.0`](https://github.com/OpenVibers/OpenVibe.Contracts/tree/v0.419.0) and [`openvibe-sdk v0.161.0`](https://github.com/OpenVibers/OpenVibe.SDK/tree/v0.161.0).

- Version: 1.0.0
- Owner: billing
- Visibility: internal
- Status: active
- Compatibility: backward
- Schema: [`https://openvibe.network/contracts/billing/credit-sandbox-grant-result.v1.json`](/docs/contracts/billing.credit-sandbox-grant-result.json)

billing.credit-sandbox-grant-result@1: the grant and the balance after it.

## Fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| `grant_id` | string | yes |  | - `pattern ^igr_[0-9A-HJKMNP-TV-Z]{26}$` |
| `amount_nano_usd` | string | yes | Integer nano-USD (1e-9 USD), stored as a string. | - `pattern ^[0-9]{1,19}$` |
| `balance_nano_usd` | string | yes | Integer nano-USD (1e-9 USD), stored as a string. | - `pattern ^[0-9]{1,19}$` |

## Examples

From the contract's own test fixtures: valid ones validate, rejected ones must fail.

 Valid: after-spend

~~~~
{
  "grant_id": "igr_01J8Z3Q4R5S6T7V8W9X0Y1Z2A1",
  "amount_nano_usd": "5000000000",
  "balance_nano_usd": "4999000000"
}
~~~~

Valid: full

~~~~
{
  "grant_id": "igr_01J8Z3Q4R5S6T7V8W9X0Y1Z2A1",
  "amount_nano_usd": "5000000000",
  "balance_nano_usd": "5000000000"
}
~~~~

Rejected: bad-id

~~~~
{
  "grant_id": "grant-1",
  "amount_nano_usd": "5000000000",
  "balance_nano_usd": "5000000000"
}
~~~~

Rejected: missing-balance

~~~~
{
  "grant_id": "igr_01J8Z3Q4R5S6T7V8W9X0Y1Z2A1",
  "amount_nano_usd": "5000000000"
}
~~~~

Rejected: money-float

~~~~
{
  "grant_id": "igr_01J8Z3Q4R5S6T7V8W9X0Y1Z2A1",
  "amount_nano_usd": "5000000000",
  "balance_nano_usd": "1.5"
}
~~~~

## Validate

~~~~
const contracts = require('openvibe-contracts');
contracts.validate('billing.credit-sandbox-grant-result@1', value);   // { valid, errors: [{ path, message }] }
~~~~