{"uid":"cap_x1ow6l7lxEqLcPadOW7O2","slug":"delx-commerce-dns-cname-chain-check-e75b9519","name":"Delx Commerce DNS CNAME Chain Check","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/dns-cname-chain-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"names":{"type":"array","items":{"type":"string","maxLength":8192},"maxItems":256,"description":"Names supplied to DNS Cname Chain Check; used only for this bounded calculation and processed in memory without retention."},"max_hops":{"type":"integer","description":"Max Hops supplied to DNS Cname Chain Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"hops":2,"loop":false,"names":["www.example.com","edge.example.net","origin.example.net"],"within_budget":true},"schema":"delx/util-dns-cname-chain-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"5413dc5bf3dab733024514776f9526adadb0c9c3253d4fd4df6f85ea895c49ef","external_calls":0},"operation":"web_reliability:dns_cname_chain_check"}},"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_oyxLn1zblr8CSAs1X3oWF","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":"Resolves and validates the full CNAME chain for one or more DNS hostnames, reporting hop count, loop detection, and chain members up to a configurable max-hop budget.","exampleAgentPrompt":"Can you trace the full CNAME chain for www.example.com and tell me how many hops it takes, whether it loops, and whether it stays within 5 hops?","exampleUseCases":[{"title":"CDN redirect chain audit","prompt":"Check the CNAME chain for cdn.myshop.com — I want to know all the intermediate hostnames, the total hop count, and whether there's any loop, with a max of 10 hops."},{"title":"Pre-deployment DNS sanity check","prompt":"Before we go live, can you verify the CNAME chain for staging.acme.io and make sure it resolves cleanly within 5 hops and doesn't loop back on itself?"},{"title":"Multi-domain CNAME validation","prompt":"I need to check the CNAME chains for api.example.com, www.example.com, and mail.example.com — tell me if any of them have loops or exceed 8 hops."}],"resultDescription":"Returns a JSON object with the full ordered list of CNAME names in the chain, total hop count, a boolean indicating whether a loop was detected, and whether the chain resolved within the specified max-hop budget. Also includes evidence metadata: whether input was retained (always false), the SHA-256 hash of the input, and external call count.","failureModes":["Invalid or non-existent hostname returns an empty or truncated chain","CNAME loop detected returns loop:true and within_budget:false","Exceeding max_hops budget returns within_budget:false","Malformed input (non-string items, oversized array) returns a validation error","Payment failure via x402 prevents execution entirely","Network DNS resolution timeout may cause incomplete chain results"],"whenToPreferThis":"Use this endpoint when you need programmatic, pay-per-call DNS CNAME chain resolution without signup — especially when validating CDN configurations, diagnosing redirect loops, or auditing multi-hop DNS setups. Prefer it over manual dig/nslookup when you need structured JSON output, loop detection, and hop-budget enforcement in an automated agent workflow. It is ideal for site reliability checks and pre-deployment DNS validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:49:45.554Z","isFirstParty":false,"canonicalSlug":"delx-commerce-dns-cname-chain-check-e75b9519"}