{"uid":"cap_yMD-wxrUAiqJyPPiJmSuy","slug":"witnessory-post-quantum-tls-ssh-domain-check-f26e3833","name":"Witnessory Post-Quantum TLS/SSH Domain Check","description":"58.4% of the top 10,000 sites negotiate post-quantum TLS; 52.3% of SSH servers offer post-quantum key exchange. As of 2026-10-27, from 4 probes; signed readings, recomputable.","url":"https://api.witnessory.org/pay/check?utm_source=zero.xyz","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"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"record":{"level":"ready","domain":"example.org","checked_utc":"2026-10-21T10:00:00Z"},"summary":"example.org: a current browser gets post-quantum key exchange (X25519MLKEM768, TLS 1.3)","signatures":{"ed25519":"...","mldsa65":"..."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_omNhgcNIS1S3t_THx9-07","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a cryptographically signed attestation of whether a specific domain supports post-quantum key exchange in TLS and SSH","exampleAgentPrompt":"Check whether cloudflare.com supports post-quantum key exchange — I want a signed, verifiable attestation of its post-quantum TLS readiness level.","exampleUseCases":[{"title":"Vendor security due diligence check","prompt":"Before we integrate with payments.acme.com, can you check whether they support post-quantum TLS and give me a signed attestation I can attach to the security review?"},{"title":"Verify own site's quantum readiness","prompt":"We just updated our TLS config on mybankingapp.com — can you get a signed proof that it now negotiates post-quantum key exchange so I can show compliance?"},{"title":"Benchmark competitor's crypto posture","prompt":"Can you check whether competitor.io has post-quantum TLS enabled yet? I want to compare their quantum-readiness level against ours."}],"resultDescription":"A JSON object containing: a 'record' with the domain, readiness level (e.g. 'ready'), and UTC timestamp of the check; a human-readable 'summary' describing the negotiated post-quantum algorithm (e.g. X25519MLKEM768 with TLS 1.3); and 'signatures' with both ed25519 and MLDSA65 cryptographic signatures over the result, making the attestation independently verifiable and recomputable.","failureModes":["Domain does not support post-quantum key exchange — returns a lower readiness level rather than error","Network unreachable or domain does not exist — may return an error or failed probe status","Payment not provided or insufficient — HTTP 402 response before any domain check is performed","Rate limiting or probe unavailability — transient failures across probe nodes"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, independently verifiable attestation of a domain's post-quantum TLS or SSH status — not just a raw TLS handshake inspection. It is ideal for compliance evidence, vendor audits, or any workflow requiring tamper-evident proof signed with both classical (ed25519) and post-quantum (MLDSA65) algorithms. Prefer it over generic TLS scanners when auditability and signature provenance matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:40.599Z","isFirstParty":false,"canonicalSlug":"witnessory-post-quantum-tls-ssh-domain-check-f26e3833"}