{
  "lexicon": 1,
  "id": "sh.tangled.repo.diff",
  "defs": {
    "main": {
      "type": "query",
      "parameters": {
        "type": "params",
        "required": ["repo", "ref"],
        "properties": {
          "repo": {
            "type": "string",
            "description": "Repository identifier in format 'did:plc:.../repoName'"
          },
          "ref": {
            "type": "string",
            "description": "Git reference (branch, tag, or commit SHA)"
          }
        }
      },
      "output": {
        "encoding": "*/*"
      },
      "errors": [
        {
          "name": "RepoNotFound",
          "description": "Repository not found or access denied"
        },
        {
          "name": "RefNotFound",
          "description": "Git reference not found"
        },
        {
          "name": "InvalidRequest",
          "description": "Invalid request parameters"
        }
      ]
    }
  }
}