{"uid":"cap__ETLLafLeUYVZBbCF-55F","slug":"delx-seeded-random-bytes-hex-3ef1caa8","name":"Delx Seeded Random Bytes Hex","description":"Seeded Random Bytes Hex: Seeded Random Bytes Hex returns reproducible non-cryptographic bytes encoded as hex from bounded caller-supplied values without an external provider. Call Seeded Random Bytes Hex when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Random Bytes Hex as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base…","url":"https://api.delx.ai/api/v1/x402/seeded-random-bytes-hex","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"seed":{"type":"string","maxLength":8192,"description":"Seed supplied to Seeded Random Bytes Hex; used only for this bounded calculation and processed in memory without retention."},"byte_count":{"type":"integer","description":"Byte Count supplied to Seeded Random Bytes Hex; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"hex":"3453b588df76660a7f2f43b352d4aa07","byte_count":16,"cryptographic":false},"schema":"delx/util-seeded-random-bytes-hex/v1","status":"pass","evidence":{"retained":false,"input_sha256":"1e3b9279f92425f828e6fdd3e438f00a5b856edba6d54ba0faef18c330d43845","external_calls":0},"operation":"seeded_decision:seeded_random_bytes_hex"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Mc32uPAzyQjDQb-lPWidZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a deterministic hex string of a specified byte length using a provided seed value, without storing inputs or making external calls.","exampleAgentPrompt":"Generate 16 bytes of seeded random hex using the seed 'my-agent-session-42' — I need a deterministic hex string I can reproduce later.","exampleUseCases":[{"title":"Deterministic test fixture generation","prompt":"Using the seed 'test-run-2024-fixture' generate 32 bytes of seeded random hex so I get the same value every time I run my test suite."},{"title":"Reproducible nonce for idempotent requests","prompt":"I need a reproducible nonce for my API request — generate 8 bytes of seeded hex using the seed 'order-ref-7891' so I can recreate it if I need to retry."},{"title":"Seeded token for agent decision tracing","prompt":"Generate 20 bytes of deterministic hex using the seed 'agent-decision-trace-001' so I can tag this workflow run with a reproducible identifier."}],"resultDescription":"Returns a JSON object containing the generated hex string, the byte count used, and a 'cryptographic' boolean (always false, indicating pseudorandom rather than cryptographically secure output). Also includes audit evidence fields: whether inputs were retained (always false), input SHA-256 hash, and external call count (always 0).","failureModes":["Missing or empty seed string returns a validation error","byte_count not provided or non-integer causes a 400-level error","byte_count exceeding service limits may be rejected","seed string exceeding 8192 characters is rejected per schema maxLength","malformed JSON body returns a parse error"],"whenToPreferThis":"Choose this endpoint when you need deterministic, reproducible hex output from a known seed — ideal for test fixtures, reproducible nonces, workflow tagging, or any scenario where the same seed must always yield the same output. Prefer this over cryptographic random generators when reproducibility matters more than unpredictability. Avoid when you need cryptographically secure random bytes (the response explicitly flags cryptographic: false).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:06:18.555Z","isFirstParty":false}