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Create a new signing key for the project in standby status

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

Create a new signing key for the project in standby status [POST /v1/projects/{ref}/config/auth/signing-keys]

Name on the gateway: supabase_api__v1_create_project_signing_key · may change things.

Parameters

NameTypeDescription
ref requiredstringProject ref
algorithm requiredEdDSA | ES256 | RS256 | HS256
statusin_use | standby
private_jwkobject

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": "supabase_api__v1_create_project_signing_key",
  "arguments": {
    "ref": "…",
    "algorithm": "…"
  }
}

Or connect the Supabase Management API server directly, which lists 167 tools including this one:

Run in your terminal
claude mcp add --transport http hj-supabase-api https://mcp.hjlabs.in/mcp/supabase-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the create a new signing key for the project in standby status tool with ref set to ….

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