Siel

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-14T19:32:10.780016Z",
      "publishedAt": "2026-11-14T19:32:10.780016Z",
      "statusChangedAt": "2026-11-14T19:32:10.780016Z"
    }
  },
  "server": {
    "name": "com.siellabs/siel",
    "title": "Siel",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://api.siellabs.com/mcp",
        "type": "streamable-http",
        "headers": [
          {
            "name": "Authorization",
            "isSecret": true,
            "variables": {
              "api_key": {
                "isSecret": true,
                "description": "Your Siel API key"
              }
            },
            "description": "Bearer and a Siel API key, from API keys in the web app. Leave it out to sign in with your Siel account instead. A key with only the Read permission can't send."
          }
        ]
      }
    ],
    "version": "1.1.0",
    "websiteUrl": "https://docs.siellabs.com/ai-agents",
    "description": "Send SMS and OTPs, and read messages, prices and the balance. Sign in, or use an API key."
  }
}