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Quantum Error Correction - Classical Repetition Code Decoder
x402
Quantum Error Correction - Classical Repetition Code Decoder is a paid API for AI agents from quantum.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Majority-decodes an odd-length repetition-code bit word to correct a single logical bit error and returns the corrected codeword alongside the XOR syndrome.
Price / call$0.003
Success—
StatusUnknown
How this service works
Treats a caller-supplied odd-length bit word as a classical repetition code, majority-decodes one logical bit, and reports the corrected word and adjacent XOR syndrome. This narrow demonstration is not a surface-code simulation and does not model coherent quantum errors, measurements or fault-tolerant thresholds.
Output
The endpoint returns the majority-decoded corrected bit word (the logical bit replicated to odd length), the recovered logical bit value, and the XOR syndrome indicating which positions disagreed with the majority — useful for understanding where errors occurred in the codeword.
Example use cases
Classroom repetition code demonstration
“I'm teaching a coding theory class and want to show students how a 5-bit repetition code '11011' corrects a single bit flip — can you majority-decode it and show the XOR syndrome?”
Noisy channel bit recovery
“I transmitted the logical bit 0 using a 7-bit repetition code over a noisy channel and received '0001000' — can you majority-decode this and tell me what the corrected codeword and syndrome are?”
Error detection in a 3-bit code
“Check this 3-bit repetition-code word '101' for errors, apply majority voting to get the corrected logical bit, and return the syndrome.”
Technical details
Endpoint
POSThttps://quantum.halowerk.com/v1/error-correctionWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.003) demonstration or verification of classical majority-vote error correction on a repetition code. It is ideal for educational demos, testing error-correction logic, or validating small odd-length codewords programmatically. Do not use it for surface-code simulation, fault-tolerant quantum error correction, coherent error modeling, or decoding non-repetition codes.
Side effects
- Even-length bit string provided — only odd-length inputs are accepted (minLength 3, pattern ^[01]+$)
- Bit string shorter than 3 bits — below the minimum required for majority voting
- Bit string longer than 99 characters — exceeds maxLength limit
- Non-binary characters in input — only '0' and '1' are valid
- Empty string — rejected by minLength constraint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| encoded_bits | string | Odd-length repetition-code word. |
Tags
x402
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