{
  "lexicon": 1,
  "id": "sh.tangled.repo.getDefaultChannel",
  "defs": {
    "main": {
      "type": "query",
      "description": "Get the default channel for a Pijul repository",
      "parameters": {
        "type": "params",
        "required": ["repo"],
        "properties": {
          "repo": {
            "type": "string",
            "description": "Repository identifier in format 'did:plc:.../repoName'"
          }
        }
      },
      "output": {
        "encoding": "application/json",
        "schema": {
          "type": "object",
          "required": ["channel"],
          "properties": {
            "channel": {
              "type": "string",
              "description": "Default channel name"
            }
          }
        }
      },
      "errors": [
        {
          "name": "RepoNotFound",
          "description": "Repository not found or access denied"
        }
      ]
    }
  }
}