{"uid":"cap_D9rQnH4lxIpwa54xyFHEV","slug":"rubric-protocol-attested-hedera-hbar-supply-facts-1effa076","name":"Rubric Protocol – Attested Hedera HBAR Supply Facts","description":"Rubric x402 service. Operated by Rubric Protocol.","url":"https://rubric-protocol.com/v1/attested/https://rubric-protocol.com/v1/x402/hedera-facts/supply","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json"],"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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kujzQlb-Qcu0c36Y9gK46","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns cryptographically attested Hedera network supply metrics (HBAR circulating/total supply) anchored to Hedera HCS with a post-quantum signature.","exampleAgentPrompt":"Can you fetch the current HBAR circulating and total supply from Hedera mainnet with a cryptographic attestation anchored to HCS, so I have a tamper-proof record I can use for our compliance report?","exampleUseCases":[{"title":"Compliance report supply verification","prompt":"I need a post-quantum signed, HCS-anchored proof of the current HBAR circulating supply for our quarterly compliance filing — can you pull that attested fact from Rubric Protocol?"},{"title":"DeFi protocol tokenomics snapshot","prompt":"Grab me an attested snapshot of Hedera's total and circulating HBAR supply right now, with a verifiable signature, so our smart contract dashboard can display trustworthy supply figures."},{"title":"Audit trail for AI treasury agent","prompt":"Our AI treasury agent just made an HBAR allocation decision — can you fetch an attested Hedera supply record with an HCS anchor so we have an auditable on-chain fact tied to that moment?"}],"resultDescription":"Returns a structured JSON payload containing current HBAR supply metrics (circulating supply, total supply) along with a post-quantum cryptographic signature and a Hedera Consensus Service (HCS) sequence anchor, providing tamper-evident, independently verifiable proof of the supply fact at time of query.","failureModes":["Hedera mirror node unavailable — returns error indicating upstream data source failure","Invalid or malformed POST body (missing required 'input' fields) — returns 400-level schema validation error","Payment not completed or insufficient USDC — returns 402 Payment Required","HCS anchoring delay — response may be slower than usual if Hedera network is congested","Post-quantum signing service unavailable — attestation cannot be generated, returns 503"],"whenToPreferThis":"Choose this endpoint when you need cryptographically attested, independently verifiable Hedera HBAR supply data — not just a raw API response. It is ideal for compliance, audit, and DeFi use cases where tamper-evident proof of the supply figure (backed by post-quantum signatures and HCS anchoring) is required, rather than a plain REST call to a Hedera mirror node.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:46:22.693Z","isFirstParty":false}