{
  "lexicon": 1,
  "id": "sh.tangled.repo.changeGet",
  "defs": {
    "main": {
      "type": "query",
      "description": "Get details of a specific Pijul change",
      "parameters": {
        "type": "params",
        "required": ["repo", "hash"],
        "properties": {
          "repo": {
            "type": "string",
            "description": "Repository identifier in format 'did:plc:.../repoName'"
          },
          "hash": {
            "type": "string",
            "description": "Change hash to retrieve"
          }
        }
      },
      "output": {
        "encoding": "application/json",
        "schema": {
          "type": "object",
          "required": ["hash", "authors", "message"],
          "properties": {
            "hash": {
              "type": "string",
              "description": "Change hash (base32 encoded)"
            },
            "authors": {
              "type": "array",
              "items": {
                "type": "ref",
                "ref": "#author"
              }
            },
            "message": {
              "type": "string",
              "description": "Change description"
            },
            "timestamp": {
              "type": "string",
              "format": "datetime",
              "description": "When the change was recorded"
            },
            "dependencies": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "description": "Hashes of changes this change depends on"
            },
            "diff": {
              "type": "string",
              "description": "Raw diff content of the change"
            }
          }
        }
      },
      "errors": [
        {
          "name": "RepoNotFound",
          "description": "Repository not found or access denied"
        },
        {
          "name": "ChangeNotFound",
          "description": "Change not found"
        },
        {
          "name": "InvalidRequest",
          "description": "Invalid request parameters"
        }
      ]
    },
    "author": {
      "type": "object",
      "required": ["name"],
      "properties": {
        "name": {
          "type": "string"
        },
        "email": {
          "type": "string"
        }
      }
    }
  }
}