Mailpark
Errors

mcp_unavailable

HTTP 503MCP server unavailable

When it happens

The MCP endpoint couldn't start.

How to fix it

Retry. If it keeps happening, use the REST API directly.

Example response

503
{
  "error": {
    "code": "mcp_unavailable",
    "message": "MCP server unavailable.",
    "fix": "Retry. If it keeps happening, use the REST API directly.",
    "docs": "https://docs.mailpark.io/errors/mcp_unavailable"
  }
}