Vellium & Co

Directory › Developer tools and utilities › Coin flip

Coin flip

Flip one or more fair coins and get heads or tails, with the tally. Cryptographically random, not Math.random. For tie-breaks and A/B splits an agent has to decide on its own.

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
567 ms
Price
$0.005 per call
Paying buyers, last 30 days
4 (directory's own records)
Paid calls, last 30 days
4
Category
Developer tools and utilities
Address
https://flat-rate-llm.kikoribera03.workers.dev/v1/random/coinflip

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/19fc12d6a3b5.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].