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# Hackathon Backoffice API Contract
## GET /api/v1/dashboard
### Purpose
Single endpoint delivering aggregated metrics for the IMPHNEN x Kolosal.ai Hackathon dashboard.
### Authentication & Authorization
- Requires admin (backoffice) scope: e.g. `role=admin`
- 401 if unauthenticated, 403 if authenticated but lacking required scope.
### Examples
```
GET /api/v1/hackathon/dashboard
```
### Response Schema
```jsonc
{
"data": {
"total_participants": 1261,
"total_teams": 206,
"total_submissions": 0 // Total project submitted
}
}
```
### Field Types
| Path | Type | Notes |
| ------------------------- | ------- | --------------------- |
| `data.total_participants` | integer | >= 0 |
| `data.total_teams` | integer | >= 0 |
| `data.total_submissions` | integer | <= `data.total_teams` |
### Errors
| Status | Code | Message | Notes |
| ------ | ---------------- | ----------------------------- | --------------------- |
| 401 | `unauthorized` | `authentication required` | Missing/invalid token |
| 403 | `forbidden` | `insufficient permissions` | Lacks required scope |
| 429 | `rate_limited` | `too many dashboard requests` | Rate limiting |
| 500 | `internal_error` | `unexpected server error` | Unhandled exception |
## Rate Limiting
- Suggested: 30 requests / minute / admin user.
- Return 429 with `Retry-After` header.
---
**Revision History**
- v1.0.0 (2025-11-30): Initial contract drafted.