Home / Servers / Vercel API / sign_kms_token
Sign a token
An MCP tool from the Vercel API server, hosted on mcp.hjlabs.in.
Sign a token Sign a JWT with a KMS issuer's active signing key. Authenticate the request with a Vercel OIDC token in the Authorization: Bearer header; the issuer's policies decide which workloads are allowed to… [POST /v1/kms/issuers/{issuerId}/sign/token]
Name on the gateway: vercel_api__sign_kms_token · may change things.
Parameters
| Name | Type | Description |
|---|---|---|
issuerId required | string | The ID of the issuer. |
claims | object | The claims to include in the token. |
headers | object | Additional headers to include in the token. |
ttl | number | The time-to-live for the token, in seconds. |
How to call it
Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:
{
"name": "vercel_api__sign_kms_token",
"arguments": {
"issuerId": "…"
}
}Or connect the Vercel API server directly, which lists 472 tools including this one:
claude mcp add --transport http hj-vercel-api https://mcp.hjlabs.in/mcp/vercel-api \
--header "Authorization: Bearer YOUR_API_KEY"Try asking
Use the sign a token tool with issuerId set to ….