{"uid":"cap_OmbDiRyA8u9HkoJleF9j7","slug":"proof-random-api-drand-beacon-sampler-cdeb0b0f","name":"Proof Random API – drand Beacon Sampler","description":"A free drand quicknet beacon relay with nonce-bound reproducible sampling. Client-side BLS verification required.","url":"https://proof-random-api.pn-26f.workers.dev/v1/research?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"depth":{"enum":["quick","deep"],"type":"string"},"query":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SSL-omTIwQWkYL2v1j8f9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Relays a verifiable random beacon from the drand quicknet network with nonce-bound reproducible sampling, requiring client-side BLS signature verification.","exampleAgentPrompt":"Can you fetch a verifiable random beacon from the drand quicknet relay for my research query 'experiment-alpha-2024' using a deep sampling depth so I can verify it client-side?","exampleUseCases":[{"title":"Auditable lottery draw randomness","prompt":"I need a cryptographically verifiable random sample for our lottery draw — use the query 'lottery-round-42' with a quick depth so I can reproduce and verify it with BLS later."},{"title":"Research experiment seeding","prompt":"Can you get me a nonce-bound reproducible random beacon from the drand relay for my research query 'trial-cohort-7' at deep depth? I need to be able to verify the output independently."},{"title":"Smart contract fairness audit","prompt":"Fetch a drand quicknet beacon for the query 'nft-drop-session-9' at quick depth — I need the verifiable randomness to audit the fairness of our NFT distribution."}],"resultDescription":"Returns a drand quicknet beacon response including a nonce-bound random value and BLS signature data that the client must verify locally. The sample is reproducible given the same query and nonce, enabling auditable and tamper-evident randomness.","failureModes":["Invalid or missing query parameter returns a 400 error","Payment not received or invalid x402 payment header results in 402 response","Invalid depth enum value causes schema validation failure","drand network unavailability may cause upstream timeout or 503","Client-side BLS verification failure indicates potential tampering or misconfigured beacon data"],"whenToPreferThis":"Choose this endpoint when you need cryptographically verifiable, auditable, and reproducible randomness backed by the drand decentralized network — particularly for research, fairness audits, lotteries, or smart contract seeding where BLS-verifiable provenance matters. Prefer it over pseudo-random APIs when tamper-evidence and independent client-side verification are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:31:41.174Z","isFirstParty":false,"canonicalSlug":"proof-random-api-drand-beacon-sampler-cdeb0b0f"}