{"uid":"cap_MrBBSAEDmQs1S1SeW_316","slug":"entropy-rip-774c66d0","name":"entropy.rip Cryptographic Entropy API","description":"Generate cryptographic random bytes","url":"https://entropy.rip/api/entropy/whisper","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http","description":"type"},"method":{"enum":["GET"],"type":"string","description":"method"},"queryParams":{"type":"object","properties":{"bytes":{"type":"integer","default":32,"description":"bytes"}},"description":"queryParams"}},"description":"input","additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","description":"type"},"example":{"type":"object","description":"example"}},"description":"output"}}},"responseSchema":{"type":"json","example":{"entropy":"a1b2c3d4..."}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"bytes":32}}},"response":{"bytes":32,"source":"system_jitter","echo_id":"43ae9be6-79a0-4830-b616-df5f2c3f9e50","entropy":"c3e6993923a3b714f31cbe8e7bcf03ee9ef86975bc05ca23ce8047a979a55971","codename":"VOID"}},"exampleRequest":{"bytes":32},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TOITqUIf_QwEQeJFJ-iY0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a specified number of high-quality cryptographically secure random bytes for use in nonce generation, key material, and secure randomness applications.","exampleAgentPrompt":"Give me 32 bytes of cryptographic entropy from entropy.rip for nonce generation.","exampleUseCases":null,"resultDescription":"Returns a payload containing the requested number of cryptographically secure random bytes (default 32), suitable for use as nonces, key material, or any application requiring high-quality entropy.","failureModes":["Payment not provided or insufficient — 402 Payment Required, endpoint requires $0.01 USDC per call via x402 protocol","Invalid or non-integer value for bytes parameter — likely 400 Bad Request","bytes value out of supported range — server may reject with 400 or 422","Network or server error — 500 Internal Server Error, retry after backoff"],"whenToPreferThis":"Prefer this endpoint when your application requires externally sourced, high-quality cryptographic entropy — especially when you distrust local PRNG seeding, need a verifiable remote entropy source, or are building applications where auditability of randomness matters. Ideal for nonce generation, key bootstrapping, or lottery-style applications requiring unpredictable randomness. Note this is a paid endpoint ($0.01 USDC per call via x402).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:44:09.870Z","isFirstParty":false}