Get a connector certificate
⚠️
Preview — this feature is being built; the design below is the spec.
GET https://app.syntic.ai/v1/tunnels/{tunnel_id}/certificates/{certificate_id}Return one certificate’s metadata.
For how this fits into a full workflow, see MCP tunnels.
Headers
| Header | Required | Value |
|---|---|---|
Authorization | Yes | Bearer <key>: a private inference key (sk_live_...). See Authentication. |
syntic-beta | Yes, while in preview | mcp-tunnels-2026-12-01. Without it the call fails with 400 beta_required. See Versioning. |
Path parameters
| Parameter | Type | Description |
|---|---|---|
tunnel_id | string | The tunnel id, starting with tnl_. |
certificate_id | string | The certificate id, starting with tcert_. |
Response
200 OK, Content-Type: application/json
{
"id": "tcert_01JCE9K1M3P5R7T9V1X3",
"type": "tunnel_certificate",
"tunnel_id": "tnl_01JCE4G6J8L0N2Q4S6U8",
"subject": "CN=erp-onprem-connector-1",
"serial": "4A:91:0C:7E:22:5B",
"fingerprint_sha256": "b2:7e:…:91",
"not_before": "2026-11-05T10:00:00Z",
"not_after": "2027-02-03T10:00:00Z",
"status": "active"
}| Field | Type | Description |
|---|---|---|
not_after | string | Certificates are valid for 90 days. Issue the next one before this date. |
status | string | active, expired or revoked. |
Examples
curl -sS "https://app.syntic.ai/v1/tunnels/tnl_01JCE4G6J8L0N2Q4S6U8/certificates/tcert_01JCE9K1M3P5R7T9V1X3" \
-H "Authorization: Bearer $SYNTIC_API_KEY" \
-H "syntic-beta: mcp-tunnels-2026-12-01"Errors
Errors use the error envelope and carry a request_id. Codes specific to this operation:
| Status | type | code | When |
|---|---|---|---|
| 400 | invalid_request_error | beta_required | The syntic-beta header is missing. |
| 404 | not_found_error | certificate_not_found | No certificate with this id on the tunnel. |
| 401 | authentication_error | invalid_api_key | The key is missing, unknown, revoked or expired. |
| 429 | rate_limit_error | rate_limited | Too many requests; wait for Retry-After. See Rate-limit headers. |
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