{"record":{"id":"a9af8a0a6a527150","repo":"rohitg00/ai-engineering-from-scratch","slug":"maxlength-must-be-a-non-negative-integer","errorCode":null,"errorMessage":"maxLength must be a non-negative integer","messagePattern":"maxLength must be a non-negative integer","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"phases/19-capstone-projects/21-tool-registry-schema-validation/code/main.py","lineNumber":131,"sourceCode":"    if not isinstance(schema, dict):\n        raise ValueError(\"schema must be a dict\")\n    unknown = set(schema.keys()) - ALLOWED_KEYWORDS\n    if unknown:\n        raise ValueError(f\"unsupported schema keywords: {sorted(unknown)}\")\n    t = schema.get(\"type\")\n    if t is not None and t not in PRIMITIVE_TYPE_MAP:\n        raise ValueError(f\"unsupported type: {t!r}\")\n    enum_vals = schema.get(\"enum\")\n    if enum_vals is not None and not isinstance(enum_vals, list):\n        raise ValueError(\"enum must be a list\")\n    min_len = schema.get(\"minLength\")\n    if min_len is not None:\n        if isinstance(min_len, bool) or not isinstance(min_len, int) or min_len < 0:\n            raise ValueError(\"minLength must be a non-negative integer\")\n    max_len = schema.get(\"maxLength\")\n    if max_len is not None:\n        if isinstance(max_len, bool) or not isinstance(max_len, int) or max_len < 0:\n            raise ValueError(\"maxLength must be a non-negative integer\")\n    if min_len is not None and max_len is not None and min_len > max_len:\n        raise ValueError(\"minLength cannot be greater than maxLength\")\n    pattern = schema.get(\"pattern\")\n    if pattern is not None and not isinstance(pattern, str):\n        raise ValueError(\"pattern must be a string\")\n    props = schema.get(\"properties\")\n    if props is not None:\n        if not isinstance(props, dict):\n            raise ValueError(\"properties must be a dict\")\n        for pname, psub in props.items():\n            if not isinstance(pname, str):\n                raise ValueError(\"property names must be strings\")\n            validate_schema_shape(psub)\n    items = schema.get(\"items\")\n    if items is not None:\n        validate_schema_shape(items)\n    req = schema.get(\"required\")\n    if req is not None:","sourceCodeStart":113,"sourceCodeEnd":149,"githubUrl":"https://github.com/rohitg00/ai-engineering-from-scratch/blob/39ea8a1c6d0b61f071226eff7ede4d4105fed820/phases/19-capstone-projects/21-tool-registry-schema-validation/code/main.py#L113-L149","documentation":"Error \"maxLength must be a non-negative integer\" thrown in rohitg00/ai-engineering-from-scratch.","triggerScenarios":"Thrown at phases/19-capstone-projects/21-tool-registry-schema-validation/code/main.py:131 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"39ea8a1c6d0b61f071226eff7ede4d4105fed820","analyzedAt":"2026-08-26T03:13:46.626Z","schemaVersion":2},"datasetVersion":"2026-08-26T07:17:17.940Z"}