# Services from gateway.stride20k.com on Zero

> gateway.stride20k.com serves 35 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/gateway.stride20k.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/gateway.stride20k.com/health.json

## Services

- [US Treasury Par Yield Curve API](https://www.zero.xyz/c/us-treasury-par-yield-curve-api-2281ca35/llms.txt): $0.005/call via x402. Returns the latest Daily Treasury Par Yield Curve with yields in percent for 13 maturities (1 month to 30 years) as published by the US Department of the Treasury
- [Stride Gateway Web Extract API](https://www.zero.xyz/c/stride-gateway-web-extract-api-2637f52a/llms.txt): $0.03/call via x402. Fetches any public web page and returns its readable content as clean markdown, stripping boilerplate and preserving title, author, and canonical URL
- [Wikipedia Article Summary Lookup](https://www.zero.xyz/c/wikipedia-article-summary-lookup-259a7956/llms.txt): $0.003/call via x402. Fetches the lead summary of any English Wikipedia article by title, returning the extract, description, thumbnail, canonical URL, and Wikidata ID.
- [US Weather Forecast API (National Weather Service)](https://www.zero.xyz/c/us-weather-forecast-api-national-weather-service-9bf1b550/llms.txt): $0.003/call via x402. Returns the official NWS weather forecast for any US latitude/longitude — up to 4 periods (~48 hours, day/night) including temperature, wind, and forecast text
- [Stride20k x402 Preflight Score](https://www.zero.xyz/c/stride20k-x402-preflight-score-cd66ae29/llms.txt): $0.01/call via x402. Returns a deterministic 0-100 trust score for any x402 resource URL before an agent pays for it, by probing the live 402 response, well-known manifest, Bazaar listing, and observed age.
- [Stride Gateway LLM Inference (Claude Haiku 4.5 via x402)](https://www.zero.xyz/c/stride-gateway-llm-inference-claude-haiku-4-5-via-x402-a898dec6/llms.txt): $0.05/call via x402. Runs a prompt through Anthropic Claude Haiku 4.5 (via OpenRouter) and returns raw model output, billed per-call at $0.05 USDC over the x402 payment protocol — no API key required.
- [Stride Gateway Crypto Price API](https://www.zero.xyz/c/stride-gateway-crypto-price-api-280cc2ec/llms.txt): $0.005/call via x402. Returns the current USD spot price for any cryptocurrency by CoinGecko or DefiLlama coin ID, sourced from DefiLlama's aggregated market feed with confidence score and observation timestamp.
- [Email Validation API (Syntax + MX DNS Check)](https://www.zero.xyz/c/email-validation-api-syntax-mx-dns-check-d759f3ae/llms.txt): $0.005/call via x402. Validates an email address via RFC-style syntax checking and live MX-record DNS lookup, returning a deliverability flag, parsed domain, and sorted MX hosts — without storing data or verifying mailbox existence.
- [Stride20k DEX Pool Data API](https://www.zero.xyz/c/stride20k-dex-pool-data-api-8efc469f/llms.txt): $0.01/call via x402. Reads live Uniswap v2/v3-compatible liquidity pool state directly from Ethereum, Base, or Polygon via JSON-RPC, returning token info, spot prices, reserves, and v3 fee/liquidity data.
- [ECB Foreign Exchange Rate API (Frankfurter)](https://www.zero.xyz/c/ecb-foreign-exchange-rate-api-frankfurter-6e12d889/llms.txt): $0.002/call via x402. Returns the official ECB daily reference exchange rate for any supported fiat currency pair, sourced from the Frankfurter API.
- [Stride Domain Due-Diligence Report API](https://www.zero.xyz/c/stride-domain-due-diligence-report-api-e04e3c20/llms.txt): $1/call via x402. Composes WHOIS/RDAP registration data, DNS records, live email deliverability, and homepage content into a single domain dossier with deterministic risk flags
- [Stride20k Token Risk Score API](https://www.zero.xyz/c/stride20k-token-risk-score-api-5c6bdefb/llms.txt): $0.15/call via x402. Returns a deterministic 0-100 rug-check risk score for any ERC-20 token on Ethereum, Base, or Polygon, with rubric flags and all underlying signals.
- [EVM Gas Price API (Ethereum/Base/Polygon)](https://www.zero.xyz/c/evm-gas-price-api-ethereum-base-polygon-fb6c672b/llms.txt): $0.002/call via x402. Returns current gas fees for Ethereum, Base, or Polygon — including node-reported gas price and EIP-1559 estimates (next base fee, p25/p50/p75 priority fees) derived from the last 5 blocks, in gwei.
- [gateway.stride20k.com Domain WHOIS/RDAP Lookup](https://www.zero.xyz/c/gateway-stride20k-com-domain-whois-rdap-lookup-7401e179/llms.txt): $0.005/call via x402. Fetches normalized WHOIS/RDAP registration data for any domain name, including registration dates, expiry, registrar, nameservers, EPP status codes, and DNSSEC status.
- [Stride Gateway DNS Lookup API](https://www.zero.xyz/c/stride-gateway-dns-lookup-api-ffffa464/llms.txt): $0.002/call via x402. Resolves any DNS record type (A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR) via Cloudflare's 1.1.1.1 DNS-over-HTTPS resolver with DNSSEC validation status
- [Stride20k ERC-20 Token Risk Scorer](https://www.zero.xyz/c/stride20k-erc-20-token-risk-scorer-11cf23ed/llms.txt): $0.15/call via x402. Returns a composite risk score and on-chain signals for an ERC-20 token at a given chain and contract address
- [Hacker News Tech Pulse API](https://www.zero.xyz/c/hacker-news-tech-pulse-api-c48188cb/llms.txt): $0.005/call via x402. Returns the current Hacker News front page as 30 ranked, normalized JSON stories including title, URL, points, author, comment count, and timestamp
- [Stride20k Endpoint Scorecard](https://www.zero.xyz/c/stride20k-endpoint-scorecard-1d795fdb/llms.txt): $0.02/call via x402. Returns a due-diligence scorecard for a single x402 resource URL, showing its first observation date, catalog listing consistency, observation history, and current listing status in public catalogs like CDP Bazaar and Agentic.Market.
- [DeFi TVL Lookup by Protocol Slug](https://www.zero.xyz/c/defi-tvl-lookup-by-protocol-slug-5c2aa164/llms.txt): $0.005/call via x402. Returns the current total value locked (TVL) in USD for any DeFi protocol, aggregated across all chains, using a DefiLlama slug as identifier.
- [npm Package Health API](https://www.zero.xyz/c/npm-package-health-api-0fdf786a/llms.txt): $0.003/call via x402. Returns npm registry health facts for any npm package: latest version, dist-tags, deprecation status, version count, dependency count, weekly downloads, and last-modified timestamp.
- [PyPI Package Health API](https://www.zero.xyz/c/pypi-package-health-api-1f0a0c5d/llms.txt): $0.003/call via x402. Returns dependency-hygiene facts for a PyPI package including latest version, upload time, release count, yank status, dependency count, Python constraint, license, summary, and weekly downloads
- [Stride20k Domain Dossier Report](https://www.zero.xyz/c/stride20k-domain-dossier-report-096425fc/llms.txt): $1/call via x402. Returns a composed domain intelligence report combining WHOIS, DNS (A/MX/TXT), email deliverability, and homepage extraction for any given domain name.
- [Stride20k EVM Gas Price API](https://www.zero.xyz/c/stride20k-evm-gas-price-api-90bd4762/llms.txt): $0.002/call via x402. Returns current gas fees for a specified EVM chain (Ethereum, Base, Polygon), including node-reported gas price, next base fee, and priority fee percentiles
- [Stride20k Crypto Price API](https://www.zero.xyz/c/stride20k-crypto-price-api-59c4f031/llms.txt): $0.005/call via x402. Returns the current USD price and confidence score for any cryptocurrency by CoinGecko coin ID, sourced from DefiLlama
- [Stride20k WHOIS Lookup](https://www.zero.xyz/c/stride20k-whois-lookup-9f6ccb4e/llms.txt): $0.005/call via x402. Returns normalized WHOIS/RDAP data for a domain, including registrar, registration/expiry dates, nameservers, DNSSEC status, and transfer locks — paid per call via USDC x402.
- [Stride20k PyPI Package Health API](https://www.zero.xyz/c/stride20k-pypi-package-health-api-b4762587/llms.txt): $0.003/call via x402. Fetches normalized health and metadata for a PyPI Python package, including latest version, license, download stats, dependency count, and yanked status.
- [Stride20k npm Package Health Lookup](https://www.zero.xyz/c/stride20k-npm-package-health-lookup-5aeadb23/llms.txt): $0.003/call via x402. Fetches normalized health and metadata for a given npm package, including latest version, weekly downloads, dependency count, deprecation status, and dist-tags.
- [Stride20k Wikipedia Knowledge Lookup](https://www.zero.xyz/c/stride20k-wikipedia-knowledge-lookup-8b4fc1b4/llms.txt): $0.003/call via x402. Fetches a normalized Wikipedia article summary by title, returning extract, description, page URL, and thumbnail via pay-per-call x402 USDC payment
- [Stride20k DeFi TVL Lookup](https://www.zero.xyz/c/stride20k-defi-tvl-lookup-c7e63e5a/llms.txt): $0.005/call via x402. Returns the current Total Value Locked (TVL) in USD for a specified DeFi protocol, sourced from DeFiLlama.
- [Stride20k DEX Pool Price & Liquidity Lookup](https://www.zero.xyz/c/stride20k-dex-pool-price-liquidity-lookup-2bb1bd17/llms.txt): $0.01/call via x402. Returns real-time price, liquidity, and token metadata for a specific on-chain DEX pool by chain and pool address.
- [Stride20k DNS Lookup API](https://www.zero.xyz/c/stride20k-dns-lookup-api-2934c802/llms.txt): $0.002/call via x402. Resolves DNS records of a specified type for a given domain name, returning normalized JSON with DNSSEC validation status, via Cloudflare DoH.
- [Stride20k Email Validation](https://www.zero.xyz/c/stride20k-email-validation-e2400b22/llms.txt): $0.005/call via x402. Validates an email address by checking RFC syntax and performing live MX-record DNS lookup to determine deliverability
- [Stride20k FX Rate Lookup](https://www.zero.xyz/c/stride20k-fx-rate-lookup-0b2c5481/llms.txt): $0.002/call via x402. Returns the live foreign exchange rate between two currency codes (e.g. USD→EUR), sourced from the ECB via Frankfurter, as normalized JSON.
- [x402 Ecosystem Category Breakdown](https://www.zero.xyz/c/x402-ecosystem-category-breakdown-699be76c/llms.txt): $0.005/call via x402. Returns the current distribution of x402 services across market categories with count, catalog share, and 7-day growth delta per category
- [Stride20k x402 Market Trend Time Series](https://www.zero.xyz/c/stride20k-x402-market-trend-time-series-5cdeeaf2/llms.txt): $0.01/call via x402. Returns a time-series of how many services/resources are listed in the x402 ecosystem (by category or total) over a trailing window of 1–30 days, sampled ~3x/day since 2026-07-06.

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)