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Shuffle a List (Fisher-Yates CSPRNG)
x402
Shuffle a List (Fisher-Yates CSPRNG) is a paid API for AI agents from flat-rate-llm.kikoribera03.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-15).
Randomly shuffles a comma-separated list into a uniformly random order using the Fisher-Yates algorithm over a cryptographically secure PRNG.
Price / call$0.0025
Success—
StatusUnknown
How this service works
60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.
Output
Returns a JSON object with 'shuffled' (an array of the input items in a new uniformly random order, guaranteed by Fisher-Yates over a CSPRNG) and 'count' (the number of items in the list).
Example use cases
Random team assignment order
“I have a list of employees and need to randomly assign presentation order — shuffle this for me: Jordan, Taylor, Morgan, Riley, Casey, Quinn, Avery.”
Randomized game card draw
“Shuffle this deck of card names so I can deal them in a truly random order: Ace, King, Queen, Jack, Ten, Nine, Eight, Seven.”
Fair raffle draw ordering
“We have 10 raffle entrants and need a cryptographically fair random order for drawing prizes — shuffle this list: Emma, Liam, Olivia, Noah, Ava, Ethan, Sophia, Mason, Isabella, Logan.”
Technical details
Endpoint
POSThttps://flat-rate-llm.kikoribera03.workers.dev/v1/random/shuffleWhen to prefer
Choose this endpoint when you need a provably uniform random permutation — sorting by a random key does not produce every permutation with equal probability, but Fisher-Yates does. Ideal when fairness matters (raffles, game logic, assignment queues) and a cryptographically secure source of randomness is required. Prefer over naive client-side shuffles or sort-by-random-key hacks.
Side effects
- Missing 'items' parameter returns an error — the comma-separated list is required
- Empty list may return an empty shuffled array
- Malformed JSON array in POST body returns a parse error
- Very large lists may hit request size limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| itemsrequired | string | The list to shuffle, comma-separated. A JSON array of strings is also accepted in a POST body. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| count | number | |
| shuffled | array |
Tags
x402
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