{"uid":"cap_VLT0uMRRzBEqqVU_udYhd","slug":"delx-nonce-hex-33cfb1ee","name":"Delx Nonce Hex","description":"Generate a random hex nonce. Call when you need request nonces for agent idempotency keys. Returns hex nonce and byte length for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.","url":"https://api.delx.ai/api/v1/x402/nonce-hex","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"bytes":{"type":"integer","description":"Input field: bytes."}}},"responseSchema":{"type":"json","example":{"hex":"af108c381d9aeaa3","bytes":8,"schema":"delx/util-nonce-hex/v1"}},"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_nRkiQZona27O9c05uJbbm","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 cryptographically random hex-encoded nonce of a specified byte length for use as idempotency keys or request identifiers.","exampleAgentPrompt":"Generate a 16-byte random hex nonce I can use as an idempotency key for my next API request.","exampleUseCases":[{"title":"Idempotency key for payment request","prompt":"I need a 32-byte hex nonce to use as an idempotency key before I submit a payment so it can't be duplicated."},{"title":"Unique token for webhook deduplication","prompt":"Generate a random 16-byte hex nonce I can attach to an outgoing webhook so my receiver can detect and drop duplicates."},{"title":"Nonce for request signing","prompt":"Give me a fresh 24-byte hex nonce to include in the signature header for my next signed API call."}],"resultDescription":"Returns a JSON object containing the generated hex-encoded nonce string and the byte length used to produce it, with no server-side retention of the value.","failureModes":["Invalid or missing bytes field returns a 4xx error","bytes value too large or negative may cause a validation error","Network timeout or service unavailability returns a 5xx error","Payment failure via x402 prevents the call from completing"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, stateless, no-setup way to generate a random hex nonce for idempotency keys, request deduplication, or signing headers — especially inside an agent pipeline that already uses x402 micropayments on Base and wants a local JSON result with no API keys or retained state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:57:22.887Z","isFirstParty":false}