{"uid":"cap_HiWcM1ZsjUXKPTogBlLTV","slug":"rubric-protocol-attested-hedera-latest-transaction-facts-0d5c459c","name":"Rubric Protocol – Attested Hedera Latest Transaction Facts","description":"Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response","url":"https://rubric-protocol.com/v1/x402/hedera-facts/latest-tx","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"],"type":"string"},"pathParams":{"type":"object","required":["fact"],"properties":{"fact":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"format":{"type":"string"},"example":{}},"additionalProperties":false}}},"responseSchema":null,"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_Dzq1bSorjfisq5BJYAREa","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":"Returns the latest attested Hedera network facts (HBAR exchange rate, gas fees, supply, node roster, throughput, topic state) for the most recent transaction, each response carrying an ML-DSA-65 post-quantum attestation ID.","exampleAgentPrompt":"Pull the latest attested Hedera network facts — HBAR exchange rate, gas fees, and node roster — and include the ML-DSA-65 attestation ID so I can prove what the network state was when my agent made its decision.","exampleUseCases":[{"title":"Auditable HBAR exchange rate for agent trades","prompt":"Fetch the current HBAR exchange rate from Rubric Protocol with its post-quantum attestation ID — I need tamper-evident proof of the rate my trading agent used when it executed."},{"title":"Compliance snapshot of Hedera network state","prompt":"Get me an attested Hedera network snapshot right now — gas fees, supply, and throughput — with the attestation ID attached so our compliance team can verify what the network looked like at decision time."},{"title":"Verifiable node roster for infrastructure audit","prompt":"Retrieve the latest Hedera node roster with its ML-DSA-65 attestation so I can prove to our auditors exactly which nodes were active when my agent submitted the transaction."}],"resultDescription":"A JSON response containing the latest Hedera network facts snapshot including HBAR exchange rate, gas fees, total supply, node roster, network throughput, and topic state, along with an ML-DSA-65 post-quantum attestation ID that cryptographically binds the response to the served snapshot for tamper-evident verification.","failureModes":["Network unavailability returns a 503 or timeout","Invalid or expired payment token returns a 402 payment required error","Hedera mainnet data lag may cause stale snapshot if the network is congested","Malformed GET request returns a 400 bad request","Rate limiting on repeated rapid calls may return 429 too many requests"],"whenToPreferThis":"Choose this endpoint when your AI agent needs cryptographically attested, tamper-evident Hedera network facts — especially for compliance, audit trails, or provable decision logs where you must demonstrate exactly what on-chain state the agent observed. Prefer it over raw Hedera Mirror Node APIs when you need a post-quantum (ML-DSA-65) signed attestation ID bundled with the data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:31:20.566Z","isFirstParty":false}