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VectorDNS/docs/api-spec.md

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# Go DNS API Specification
Base URL: `https://<vps-host>/api/v1`
All requests require the header `X-API-Key: <shared-secret>`.
---
## Endpoints
### `POST /dns/lookup`
Resolve DNS records for a domain.
**Request:**
```json
{
"domain": "example.com",
"types": ["A", "AAAA", "MX", "TXT", "NS", "CNAME", "SOA", "CAA", "SRV"],
"nameserver": "8.8.8.8"
}
```
- `domain` (required): The domain to query.
- `types` (optional): Record types to query. Defaults to all supported types.
- `nameserver` (optional): Specific nameserver to query. Defaults to system resolver.
**Response (200):**
```json
{
"domain": "example.com",
"nameserver": "8.8.8.8",
"records": {
"A": [{ "value": "93.184.216.34", "ttl": 300 }],
"MX": [{ "value": "mail.example.com", "priority": 10, "ttl": 3600 }]
},
"query_time_ms": 12
}
```
---
### `POST /dns/propagation`
Check DNS propagation across multiple resolvers.
**Request:**
```json
{
"domain": "example.com",
"type": "A",
"resolvers": ["8.8.8.8", "1.1.1.1", "9.9.9.9"]
}
```
- `resolvers` (optional): Defaults to a built-in list of public resolvers.
**Response (200):**
```json
{
"domain": "example.com",
"type": "A",
"results": [
{ "resolver": "8.8.8.8", "values": ["93.184.216.34"], "ttl": 300 },
{ "resolver": "1.1.1.1", "values": ["93.184.216.34"], "ttl": 280 },
{ "resolver": "9.9.9.9", "values": ["93.184.216.34"], "ttl": 295 }
],
"consistent": true
}
```
---
### `POST /dns/validate`
DNSSEC validation for a domain.
**Request:**
```json
{
"domain": "example.com"
}
```
**Response (200):**
```json
{
"domain": "example.com",
"dnssec": true,
"chain_valid": true,
"details": "RRSIG verified for A record"
}
```
---
### `GET /health`
Health check. No authentication required.
**Response (200):**
```json
{
"status": "ok",
"version": "0.1.0"
}
```
---
## Error Responses
All errors follow this format:
```json
{
"error": "invalid domain",
"code": "INVALID_DOMAIN"
}
```
| HTTP Status | Code | Description |
|---|---|---|
| 400 | `INVALID_DOMAIN` | Malformed or missing domain |
| 400 | `INVALID_TYPE` | Unsupported record type |
| 401 | `UNAUTHORIZED` | Missing or invalid API key |
| 500 | `DNS_ERROR` | Upstream DNS query failed |
| 500 | `INTERNAL` | Unexpected server error |