# Services from rubric-protocol.com on Zero

> rubric-protocol.com serves 32 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/rubric-protocol.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/rubric-protocol.com/health.json

## Services

- [Rubric Protocol Attested Sanctions & Export Control Screening](https://www.zero.xyz/c/rubric-protocol-attested-sanctions-export-control-screening-9355b703/llms.txt): $0.01/call via x402. Screens a name or entity against OFAC SDN, UN Security Council, UK OFSI, EU financial sanctions, and BIS export-control lists in one call, returning cryptographically signed, Hedera-anchored audit evidence of the screening result.
- [Rubric Protocol Attested Policy Decision Review](https://www.zero.xyz/c/rubric-protocol-attested-policy-decision-review-0dc45a73/llms.txt): $0.1/call via x402. Evaluates a proposed agent action against a specified policy, returns a verdict with reasoning and clauses applied, and anchors a post-quantum signed, Hedera-recorded attestation of the evaluation.
- [Rubric Protocol Attested LLM Inference](https://www.zero.xyz/c/rubric-protocol-attested-llm-inference-2b4ac0c3/llms.txt): $0.01/call via x402. Runs a GPT-4o-mini chat completion and returns the response paired with a post-quantum-signed, Hedera-anchored attestation binding the prompt hash, response hash, model version, and timestamp.
- [Rubric Attested Verification Event Custody](https://www.zero.xyz/c/rubric-attested-verification-event-custody-d4377644/llms.txt): $0.005/call via x402. Seals and anchors a privacy-preserving attestation of an identity/liveness/KYC verification event — including method, provider, and outcome — using post-quantum ML-DSA-65 signatures and Hedera HCS, without exposing the subject's identity.
- [Rubric Protocol Independent Audit & Attestation Verification](https://www.zero.xyz/c/rubric-protocol-independent-audit-attestation-verification-cc6bdbca/llms.txt): $0.002/call via x402. Performs an independent cryptographic audit of a Rubric attestation, verifying signature validity, HCS sequence integrity, and Hedera mirror-node confirmation, returning a signed verdict with its own attestation ID.
- [Rubric Protocol Agent Record Attestation](https://www.zero.xyz/c/rubric-protocol-agent-record-attestation-4ea5a0a7/llms.txt): $0.005/call via x402. Returns an unforgeable operating history for any AI agent — record count, first-seen date, continuity days, and recent activity — derived from HCS-anchored attestations that cannot be backdated.
- [Rubric Protocol Wallet Payment Record](https://www.zero.xyz/c/rubric-protocol-wallet-payment-record-7cc95538/llms.txt): $0.005/call via x402. Returns attested x402 payment history for a given buyer wallet address, including settlement count, first/last-seen timestamps, total spend, services used, and distinct sellers observed — anchored immutably on Hedera HCS.
- [Rubric Protocol Attested HBAR Exchange Rate](https://www.zero.xyz/c/rubric-protocol-attested-hbar-exchange-rate-b09fe227/llms.txt): $0.001/call via x402. Returns the current HBAR/USD exchange rate from the Hedera network with a tamper-evident ML-DSA-65 post-quantum attestation anchored to Hedera HCS.
- [Rubric Protocol Attested Work Record](https://www.zero.xyz/c/rubric-protocol-attested-work-record-9dfba014/llms.txt): $0.005/call via x402. Creates a post-quantum-signed, Hedera-anchored attestation of who or what performed a specific action, its outcome, and any deviation from the original plan — forming a tamper-evident operational log entry.
- [Rubric Protocol Hedera Supply Facts](https://www.zero.xyz/c/rubric-protocol-hedera-supply-facts-4c7711a0/llms.txt): $0.001/call via x402. Returns the current HBAR total/circulating supply with a post-quantum ML-DSA-65 attestation ID anchoring the snapshot to Hedera HCS
- [Rubric Protocol – Attested Hedera Staking Facts](https://www.zero.xyz/c/rubric-protocol-attested-hedera-staking-facts-fc99487b/llms.txt): $0.001/call via x402. Returns a post-quantum-attested snapshot of Hedera network staking data (node roster, staking rates, and related facts) with an ML-DSA-65 attestation ID proving tamper-evident provenance.
- [Rubric Protocol Hedera Gas Fees Facts](https://www.zero.xyz/c/rubric-protocol-hedera-gas-fees-facts-6e408cea/llms.txt): $0.001/call via x402. Returns attested Hedera network gas fee data with a post-quantum ML-DSA-65 attestation ID for tamper-evident verification
- [Rubric Protocol – Hedera HCS Activity Facts](https://www.zero.xyz/c/rubric-protocol-hedera-hcs-activity-facts-eff93395/llms.txt): $0.001/call via x402. Returns ML-DSA-65-attested Hedera Consensus Service (HCS) topic activity and network state facts, providing tamper-evident proof of what an agent knew at decision time.
- [Rubric Protocol C2PA Verdict Attestation](https://www.zero.xyz/c/rubric-protocol-c2pa-verdict-attestation-e35cc7f9/llms.txt): $0.25/call via x402. Validates and attests C2PA content provenance of a raw digital asset (up to 25MB), returning a signed, sandboxed verdict proving authenticity or tampering
- [Rubric Protocol Counterparty Check](https://www.zero.xyz/c/rubric-protocol-counterparty-check-241a135d/llms.txt): $0.01/call via x402. Checks a Base blockchain address against OFAC SDN digital-currency lists and on-chain profile data, returning a cryptographically signed, Hedera-anchored compliance verdict before a transaction is executed.
- [Rubric Protocol – Attested Hedera Latest Transaction Facts](https://www.zero.xyz/c/rubric-protocol-attested-hedera-latest-transaction-facts-0d5c459c/llms.txt): $0.001/call via x402. 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.
- [Rubric Protocol – Hedera Rubric Activity Facts (Attested)](https://www.zero.xyz/c/rubric-protocol-hedera-rubric-activity-facts-attested-08ff65f6/llms.txt): $0.001/call via x402. Returns attested Hedera network facts (HBAR exchange rate, gas fees, supply, node roster, throughput, topic state) for the 'rubric-activity' snapshot, each signed with an ML-DSA-65 post-quantum attestation ID.
- [Rubric Protocol RegWatch Feed](https://www.zero.xyz/c/rubric-protocol-regwatch-feed-941b8e1a/llms.txt): $0.05/call via x402. Returns a structured, attested feed of regulatory changes affecting AI systems, including jurisdiction, instrument type, change type, effective dates, and comment deadlines.
- [Rubric Protocol x402 Spend Statement](https://www.zero.xyz/c/rubric-protocol-x402-spend-statement-1d89ca13/llms.txt): $0.5/call via x402. Generates a signed monthly x402 spend statement for a single agent, including payment totals, per-payment line items, and a Merkle root, returned as a signed ML document.
- [Rubric Protocol Hedera Node Roster Facts](https://www.zero.xyz/c/rubric-protocol-hedera-node-roster-facts-ff9b7d1f/llms.txt): $0.001/call via x402. Returns attested, post-quantum-signed Hedera network node roster data with an ML-DSA-65 attestation ID for tamper-evident provenance.
- [Rubric Protocol Hedera Throughput Facts](https://www.zero.xyz/c/rubric-protocol-hedera-throughput-facts-677b45a9/llms.txt): $0.001/call via x402. Returns attested Hedera network throughput metrics (transactions per second, etc.) with a post-quantum ML-DSA-65 attestation ID proving the data snapshot's integrity.
- [Rubric Protocol Agent Record Lookup](https://www.zero.xyz/c/rubric-protocol-agent-record-lookup-b77cbe20/llms.txt): $0.005/call via x402. Retrieves the unforgeable operating history for a specific AI agent, including record count, first-seen date, and continuity attestation
- [Rubric Protocol – Hedera Topic State (Attested)](https://www.zero.xyz/c/rubric-protocol-hedera-topic-state-attested-de2d42ac/llms.txt): $0.001/call via x402. Returns the current state of a Hedera Consensus Service (HCS) topic, cryptographically attested with an ML-DSA-65 post-quantum signature anchored on Hedera mainnet.
- [Rubric Protocol Evidence Retain](https://www.zero.xyz/c/rubric-protocol-evidence-retain-14dcdcb9/llms.txt): $0.05/call via x402. Stores a client-encrypted agent session envelope with a 7-year retention guarantee, hash-bound to a cryptographic attestation on Hedera
- [Rubric Protocol Hedera Facts Bundle (All)](https://www.zero.xyz/c/rubric-protocol-hedera-facts-bundle-all-a6cb640e/llms.txt): $0.003/call via x402. Returns six attested Hedera network facts in a single call: HBAR exchange rate, gas fees, supply, node roster, throughput, and Rubric topic state, each with its own attestation ID.
- [Rubric Protocol – Hedera Treasury Balance (Attested)](https://www.zero.xyz/c/rubric-protocol-hedera-treasury-balance-attested-93ef8b28/llms.txt): $0.001/call via x402. Returns the current HBAR treasury balance as an ML-DSA-65 post-quantum-attested, tamper-evident snapshot from the Hedera network.
- [Rubric Protocol – Attested Hedera USDC Supply](https://www.zero.xyz/c/rubric-protocol-attested-hedera-usdc-supply-fe0b01a1/llms.txt): $0.001/call via x402. Returns the current USDC circulating supply on the Hedera network, with a post-quantum ML-DSA-65 attestation ID proving the exact snapshot served.
- [Rubric Protocol Tiered AI Decision Attestation](https://www.zero.xyz/c/rubric-protocol-tiered-ai-decision-attestation-be318588/llms.txt): $0.005/call via x402. Creates a post-quantum-signed (ML-DSA-65) attestation of an AI decision anchored to the Hedera mainnet HCS topic ledger
- [Rubric Protocol – Hedera Anchor Cost Fact](https://www.zero.xyz/c/rubric-protocol-hedera-anchor-cost-fact-e0f23624/llms.txt): $0.001/call via x402. Returns the current HBAR-denominated cost to anchor a transaction on Hedera, with an ML-DSA-65 post-quantum attestation ID proving the snapshot's integrity.
- [Rubric Protocol Decision Review Attestation](https://www.zero.xyz/c/rubric-protocol-decision-review-attestation-3bfaee30/llms.txt): $0.103/call via x402. Submits an AI decision for post-quantum-signed attestation and review, anchored to the Hedera blockchain via HCS.
- [Rubric Protocol – Attested Hedera HBAR Supply Facts](https://www.zero.xyz/c/rubric-protocol-attested-hedera-hbar-supply-facts-1effa076/llms.txt): $0.004/call via x402. Returns cryptographically attested Hedera network supply metrics (HBAR circulating/total supply) anchored to Hedera HCS with a post-quantum signature.
- [Rubric Protocol C2PA Verdict Attestation (Tier B)](https://www.zero.xyz/c/rubric-protocol-c2pa-verdict-attestation-tier-b-955002ab/llms.txt): $0.05/call via x402. Attests a C2PA content authenticity verdict by accepting a verdict JSON, asset hash, and client signature produced by a locally-run Credentio instance, returning a signed attestation claim.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)