CBOR Validator

The CBOR Validator verifies binary CBOR payloads by parsing input bytes into a CBOR data model and confirming syntactic correctness and structural consistency. It accepts inputs as hex strings, Base64, or raw binary uploads and can operate offline. Conceptually, it builds a parse tree of major types, lengths, and nested items, then reports a single is_valid flag along with precise location data for any error. Core features include multi-format input, exact error localization (byte offset, major type), and an optional lightweight schema-lite check to enforce presence of specific keys and basic type constraints. The tool is useful for API gateways, IoT telemetry ingestion, and data pipelines where early detection of invalid CBOR saves debugging effort. Unique value comes from offline operation, high-contrast visualization of the parse structure, and actionable feedback with byte-level hints. Use cases range from validating device messages before decoding to verifying stored payloads during CI pipelines. Core capabilities (required) cover robust CBOR parsing, multiple inputs, and detailed error reporting; (advanced) cover minimal schema validation, batch validation, and payload-size controls. The tool complements existing testing by providing deterministic decoding results, repeatable checks, and exportable reports for audits and compliance. In practice, an engineer can run a hex sample such as A1010203 to confirm a map with a single key and two values, then inspect the parse_tree for field-level validation and error offsets when issues arise.