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Create an issuer policy

An MCP tool from the Vercel API server, hosted on mcp.hjlabs.in.

Create an issuer policy Attach a policy to a KMS issuer that grants a project's deployments permission to sign with it. [POST /v1/kms/issuers/{issuerId}/policies]

Name on the gateway: vercel_api__create_kms_issuer_policy · may change things.

Parameters

NameTypeDescription
issuerId requiredstringThe ID of the issuer.
teamIdstringThe Team identifier to perform the request on behalf of.
slugstringThe Team slug to perform the request on behalf of.
kind requiredproject-grant
projectId requiredstringThe project ID for the project grant policy.
environments requiredarrayThe environments for the project grant policy. Each entry is a system…
tokenClaimsobjectThe claims that KMS should include in signed JWTs for this policy.

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:

call_tool arguments
{
  "name": "vercel_api__create_kms_issuer_policy",
  "arguments": {
    "issuerId": "…",
    "kind": "…",
    "projectId": "…",
    "environments": []
  }
}

Or connect the Vercel API server directly, which lists 472 tools including this one:

Run in your terminal
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 create an issuer policy tool with issuerId set to ….

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