# API de Webhooks

Webhooks permitem receber callbacks HTTP quando eventos acontecem no Synapse.
Perfeitos para disparar automação externa, enviar notificações ou sincronizar
com outros sistemas.

## Endpoints

### POST /webhooks

Registra um novo webhook.

```bash
curl -X POST https://synapse.schaefer.zone/webhooks \
  -H "Authorization: Bearer YOUR_MIND_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://my-app.com/webhook",
    "events": "memory.*",
    "secret": "my-hmac-secret-min-8-chars"
  }'
```

Resposta:

```json
{
  "id": "wh_001",
  "url": "https://my-app.com/webhook",
  "events": ["memory.*"],
  "enabled": true,
  "created_at": "2026-06-27T..."
}
```

### GET /webhooks

Lista todos os webhooks do mind atual.

```bash
curl -H "Authorization: Bearer YOUR_MIND_KEY" \
     https://synapse.schaefer.zone/webhooks
```

### GET /webhooks/:id

Obtém um único webhook.

```bash
curl -H "Authorization: Bearer YOUR_MIND_KEY" \
     https://synapse.schaefer.zone/webhooks/wh_001
```

### PUT /webhooks/:id

Atualiza um webhook (URL, eventos, secret ou flag enabled).

```bash
curl -X PUT https://synapse.schaefer.zone/webhooks/wh_001 \
  -H "Authorization: Bearer YOUR_MIND_KEY" \
  -H "Content-Type: application/json" \
  -d '{"enabled": false}'
```

### DELETE /webhooks/:id

Exclui um webhook.

```bash
curl -X DELETE -H "Authorization: Bearer YOUR_MIND_KEY" \
     https://synapse.schaefer.zone/webhooks/wh_001
```

## Tipos de evento

| Padrão | Dispara quando |
|--------|----------------|
| `memory.*` | Qualquer evento de memória |
| `memory.store` | Nova memória armazenada |
| `memory.update` | Memória atualizada |
| `memory.delete` | Memória excluída |
| `chat.*` | Qualquer evento de chat |
| `chat.message_received` | Nova mensagem do humano |
| `task.*` | Qualquer evento de tarefa |
| `task.created` | Nova tarefa criada |
| `task.completed` | Tarefa marcada como concluída |
| `*` | Todos os eventos |

## Payload do webhook

Quando um evento dispara, o Synapse faz POST para sua URL:

```json
{
  "event": "memory.store",
  "timestamp": "2026-06-27T...",
  "mind_id": "m_xyz789",
  "data": {
    "id": "mem_001",
    "category": "fact",
    "key": "user_name",
    "content": "Michael Schäfer"
  }
}
```

## Verificação de assinatura

Se você definir um `secret`, o Synapse assina cada payload com HMAC-SHA256:

```
X-Synapse-Signature: sha256=<hex-hmac>
```

Verifique no seu handler:

```python
import hmac, hashlib

def verify_signature(payload_body: bytes, signature: str, secret: str) -> bool:
    expected = hmac.new(
        secret.encode(),
        payload_body,
        hashlib.sha256
    ).hexdigest()
    return hmac.compare_digest(f"sha256={expected}", signature)
```

## Padrão: sincronização em tempo real

```python
# Your webhook handler
@app.post("/webhook")
async def handle_webhook(request):
    body = await request.body()
    signature = request.headers.get("X-Synapse-Signature", "")
    if not verify_signature(body, signature, WEBHOOK_SECRET):
        return 401

    event = json.loads(body)
    if event["event"] == "memory.store":
        # Sync to another system
        sync_to_external(event["data"])
    elif event["event"] == "chat.message_received":
        # Trigger agent wake-up
        notify_agent(event["data"])
```

## Próximos passos

- [Cron & Agendador](/docs/api/cron)
- [Guia de automação com webhooks](/docs/guides/webhook-automation)