# Services from x402.payperbyte.io on Zero

> x402.payperbyte.io serves 29 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/x402.payperbyte.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.payperbyte.io/health.json

## Services

- [BYTE Library x402 Gateway – Crypto Top 100 Feed](https://www.zero.xyz/c/byte-library-x402-gateway-crypto-top-100-feed-3076bc95/llms.txt): $0.029297/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped market data for the top 100 cryptocurrencies, paid per call in USDC via x402.
- [PayPerByte Sanctions Screening Oracle](https://www.zero.xyz/c/payperbyte-sanctions-screening-oracle-71aa1963/llms.txt): $0.1/call via x402. Screens a crypto address or counterparty name against OFAC SDN and Consolidated sanctions lists, returning a BLOCK/PASS verdict with EIP-712 cryptographic attestation
- [PayPerByte Perp Positioning Snapshot](https://www.zero.xyz/c/payperbyte-perp-positioning-snapshot-ce71ccbd/llms.txt): $0.03/call via x402. Returns a live perpetual swap positioning snapshot for requested assets, including per-venue legs, funding rates, open interest, and weighted aggregate metrics.
- [PayPerByte Package Verdict Oracle](https://www.zero.xyz/c/payperbyte-package-verdict-oracle-6a293bec/llms.txt): $0.1/call via x402. Returns a cryptographically attested ALLOW/WARN/BLOCK security verdict for an npm or PyPI package, with EIP-712 provenance signing.
- [PayPerByte Crypto Regime Signal](https://www.zero.xyz/c/payperbyte-crypto-regime-signal-4f112594/llms.txt): $0.02/call via x402. Returns a BTC or ETH market regime classification (bull/bear/neutral) plus realized-volatility above/below call for a 4-hour or 24-hour horizon, delivered with a cryptographically signed EIP-712 receipt anchored on Base via EAS.
- [PayPerByte CCTP v2 Attestation Latency Feed](https://www.zero.xyz/c/payperbyte-cctp-v2-attestation-latency-feed-07487334/llms.txt): $0.01/call via x402. Returns signed latency distribution metrics for Circle's CCTP v2 cross-chain bridge attestation, separated by Fast and Standard settlement paths, with first-party burn polling data.
- [PayPerByte Merchant Screen — x402 Pre-Settlement Verification](https://www.zero.xyz/c/payperbyte-merchant-screen-x402-pre-settlement-verification-afa0abd4/llms.txt): $0.1/call via x402. Returns a cryptographically signed ALLOW/WARN/BLOCK verdict on an (domain, payTo address, observed price) triple before an AI agent settles an x402 payment
- [BYTE Library x402 Gateway – Space Weather Feed](https://www.zero.xyz/c/byte-library-x402-gateway-space-weather-feed-843ba70a/llms.txt): $0.003/call via x402. Delivers cryptographically signed, provenance-stamped space weather data to AI agents via pay-per-call USDC payment over the x402 protocol
- [BYTE Library x402 Gateway – BTC Metrics Feed](https://www.zero.xyz/c/byte-library-x402-gateway-btc-metrics-feed-0e39c475/llms.txt): $0.002442/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped Bitcoin market metrics data, payable per-call in USDC via x402 protocol on Base.
- [BYTE Library x402 Gateway – USC Statute Feed](https://www.zero.xyz/c/byte-library-x402-gateway-usc-statute-feed-240c82ef/llms.txt): $0.012208/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped feed of U.S. Code (USC) statute data, paid per call in USDC via x402 on Base with no API key required.
- [BYTE Library x402 Gateway — Threat Intelligence Feed](https://www.zero.xyz/c/byte-library-x402-gateway-threat-intelligence-feed-27e6dd9d/llms.txt): $0.05/call via x402. Delivers a cryptographically signed, EIP-712 provenance-stamped threat intelligence data feed, paid per call in USDC via x402 on Base with no API key required.
- [PayPerByte Address Reputation Feed](https://www.zero.xyz/c/payperbyte-address-reputation-feed-764bb733/llms.txt): $0.1/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped reputation assessment for a blockchain address, paid per call in USDC via x402 with no API keys required.
- [BYTE Library x402 Gateway – Earthquake Feed](https://www.zero.xyz/c/byte-library-x402-gateway-earthquake-feed-f1eab79c/llms.txt): $0.001465/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped earthquake data payable per-call in USDC via x402, with no API key required.
- [BYTE Library x402 Gateway – Weather Feed](https://www.zero.xyz/c/byte-library-x402-gateway-weather-feed-4dfe7cae/llms.txt): $0.021485/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped weather data payload, paid per call in USDC via x402 on Base with no API key required.
- [BYTE Library x402 Gateway – News Feed](https://www.zero.xyz/c/byte-library-x402-gateway-news-feed-a922aab3/llms.txt): $0.006348/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped news feed payload, paid per call in USDC via x402 with no API key required.
- [BYTE Library x402 Gateway — CVE Facts Feed](https://www.zero.xyz/c/byte-library-x402-gateway-cve-facts-feed-38de3130/llms.txt): $0.004883/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped CVE (Common Vulnerabilities and Exposures) threat-intelligence facts, paid per-call in USDC via x402 with no API key required.
- [BYTE Library x402 Gateway – Bridge Flow Feed](https://www.zero.xyz/c/byte-library-x402-gateway-bridge-flow-feed-875a3294/llms.txt): $0.019532/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped cross-chain bridge flow data, paid per call in USDC via x402 on Base.
- [PayPerByte Reasoning Verdict Oracle](https://www.zero.xyz/c/payperbyte-reasoning-verdict-oracle-5cd61931/llms.txt): $0.1/call via x402. Submits a transaction, action, or decision subject to an AI reasoning model that returns a scored risk verdict (PASS/WARN/FAIL) with an EIP-712 cryptographic attestation proving the exact bytes served
- [BYTE Library x402 Gateway – Runtime EOL Feed](https://www.zero.xyz/c/byte-library-x402-gateway-runtime-eol-feed-4ca98b07/llms.txt): $0.069336/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped data payload indicating software/runtime end-of-life (EOL) status, paid per call in USDC via x402.
- [BYTE Library x402 Gateway – DeFi Yields Feed](https://www.zero.xyz/c/byte-library-x402-gateway-defi-yields-feed-37b3b785/llms.txt): $0.048829/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped DeFi yield data for AI agents, paid per-call in USDC over x402 with no API key required.
- [BYTE Library x402 Gateway – Perpetual Funding Rates Feed](https://www.zero.xyz/c/byte-library-x402-gateway-perpetual-funding-rates-feed-11f2c796/llms.txt): $0.02/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped perpetual futures funding rate data for crypto markets, paid per call in USDC via x402
- [BYTE Library x402 Gateway — x402-pulse Feed](https://www.zero.xyz/c/byte-library-x402-gateway-x402-pulse-feed-78ee3034/llms.txt): $0.014649/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped x402-pulse data payload covering code activity metrics, paid per-call in USDC via x402 protocol on Base with no API keys required.
- [BYTE Library x402 Gateway – Merchant Trust Feed](https://www.zero.xyz/c/byte-library-x402-gateway-merchant-trust-feed-ef8baf10/llms.txt): $0.004883/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped merchant trust data feed, paid per call in USDC via x402 with no API key required.
- [BYTE Library Wiki Facts Feed](https://www.zero.xyz/c/byte-library-wiki-facts-feed-18d68883/llms.txt): $0.004883/call via x402. Returns cryptographically signed, EIP-712 provenance-stamped Wikipedia-sourced factual data payable per-call via x402 USDC on Base
- [BYTE Library x402 Gateway – pkg-facts Feed](https://www.zero.xyz/c/byte-library-x402-gateway-pkg-facts-feed-d1394889/llms.txt): $0.004883/call via x402. Delivers cryptographically signed, EIP-712 provenance-stamped package/software facts data, pay-per-call via x402 USDC micropayment on Base, no API key required.
- [BYTE Library x402 Gateway – Code Pulse Feed](https://www.zero.xyz/c/byte-library-x402-gateway-code-pulse-feed-274df380/llms.txt): $0.02/call via x402. Delivers a cryptographically signed, EIP-712 provenance-stamped code activity/pulse data feed for AI agents, paid per call in USDC via x402 with no API keys required.
- [BYTE Library x402 Gateway – Stablecoin Rails Feed](https://www.zero.xyz/c/byte-library-x402-gateway-stablecoin-rails-feed-85a23735/llms.txt): $0.03/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped data feed covering stablecoin rail metrics, paid per-call in USDC over x402 with no API key required.
- [PayPerByte x402 Gateway – Liquidation Stream](https://www.zero.xyz/c/payperbyte-x402-gateway-liquidation-stream-63967013/llms.txt): $0.03/call via x402. Returns a real-time feed of DeFi liquidation events with cryptographic EIP-712 attestation proving delivery and data authenticity.
- [BYTE Library x402 Gateway – Evidence Pack Feed](https://www.zero.xyz/c/byte-library-x402-gateway-evidence-pack-feed-64e15cbd/llms.txt): $0.1/call via x402. Returns a cryptographically signed, EIP-712 provenance-stamped evidence pack data feed payload, paid per call in USDC via x402 on Base with no API key required

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)