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Image: reddit.com · Using Claude as a "Protocol Specialist": How it helped me compress WebRTC from 2.5KB to 60 bytes

Worked Proof shown

A 60-byte WebRTC handshake protocol that fits in a QR code

Claude helped research the WebRTC handshake and check compression maths while the maker shrank a 2.5KB signal into a binary protocol for QR codes.

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Credits

  • Reddit poster martinprins Source ↗

Earliest dated source: 23 Jan 2026

The full story

The poster built a custom binary protocol, QWBP, for serverless, air-gapped WebRTC connections made through QR codes. The challenge was shrinking a standard 2.5KB JSON signal to under 100 bytes so it fits a low-density QR code; the title says it ended at about 60 bytes.

They split the work into two Claude contexts. A research one cross-referenced RFC sections on ICE credentials and confirmed the ICE passwords could be derived from the DTLS fingerprint using HKDF instead of being sent. The same context checked that compression headers would outweigh the savings on a 60-byte payload, so they skipped compression.

How it was done

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Using Claude as a "Protocol Specialist": How it helped me compress WebRTC from 2.5KB to 60 bytesForum threadreddit.com
    Reddit poster: martinprinsPosted 23 Jan 2026

    The maker's post on r/ClaudeCode.

    If it disappears: archived copy of Reddit: Using Claude as a "Protocol Specialist": How it helped me compress WebRTC from 2.5KB to 60 bytes (opens in a new tab)

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