# Services from stealthguard-402.onrender.com on Zero

> stealthguard-402.onrender.com serves 15 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/stealthguard-402.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/stealthguard-402.onrender.com/health.json

## Services

- [StealthGuard Perpetual Funding Rate & Basis Spread Oracle](https://www.zero.xyz/c/stealthguard-perpetual-funding-rate-basis-spread-oracle-76293858/llms.txt): $0.02/call via x402. Returns cross-exchange BTC/ETH/SOL perpetual funding rate skew, basis spread, and spot-futures arbitrage signals.
- [StealthGuard Polymarket Crypto Odds](https://www.zero.xyz/c/stealthguard-polymarket-crypto-odds-798f83e9/llms.txt): $0.01/call via x402. Returns sanitized BTC, ETH, and SOL probability spreads and liquidity depth from Polymarket, expressed in basis points, pre-screened for injection safety.
- [StealthGuard Base DEX Trending Tokens](https://www.zero.xyz/c/stealthguard-base-dex-trending-tokens-4456b7bc/llms.txt): $0.01/call via x402. Returns top trending Base DEX token pairs pre-screened for honeypots, malicious tax schemes, and prompt injection attempts
- [StealthGuard x402 Endpoint Verifier](https://www.zero.xyz/c/stealthguard-x402-endpoint-verifier-6a357d83/llms.txt): $0.01/call via x402. Audits x402 payment endpoints for wallet authenticity, pricing integrity, challenge header validity, and schema hijack risks
- [StealthGuard Stealth Scrape and Sanitize](https://www.zero.xyz/c/stealthguard-stealth-scrape-and-sanitize-c49888d4/llms.txt): $0.015/call via x402. Bypasses Cloudflare anti-bot protections to fetch any URL, converts the DOM to clean LLM Markdown, and runs deterministic prompt-injection sanitization via CanaryGuard
- [StealthGuard HackerNews AI Digest](https://www.zero.xyz/c/stealthguard-hackernews-ai-digest-e0cfb8f1/llms.txt): $0.01/call via x402. Fetches top HackerNews AI and autonomous agent stories and returns them as clean, injection-free LLM-safe Markdown
- [StealthGuard Topic News Scanner](https://www.zero.xyz/c/stealthguard-topic-news-scanner-8a2a523a/llms.txt): $0.02/call via x402. Scans and returns sanitized, real-time news from general news sources, HackerNews, and ArXiv for any given keyword or topic.
- [StealthGuard Pre-Trade Agent Gate](https://www.zero.xyz/c/stealthguard-pre-trade-agent-gate-8e450167/llms.txt): $0.01/call via x402. Runs a deterministic TRUST or BLOCK decision on a token or trade target by combining on-chain Base RPC liquidity checks, honeypot detection, and CanaryGuard prompt-injection scrubbing.
- [Polymarket Top Whale Orderbook Imbalances](https://www.zero.xyz/c/polymarket-top-whale-orderbook-imbalances-02af41dc/llms.txt): $0.01/call via x402. Returns live Polymarket CLOB orderbook imbalances and skew data for top whale addresses, pre-sanitized against prompt injection via CanaryGuard.
- [Polymarket CLOB Alpha Divergence Scanner](https://www.zero.xyz/c/polymarket-clob-alpha-divergence-scanner-cf791b01/llms.txt): $0.02/call via x402. Scans Polymarket CLOB orderbooks for volume spikes and smart-money spread divergence, returning sanitized alpha signals
- [StealthGuard DeFi Yield Radar](https://www.zero.xyz/c/stealthguard-defi-yield-radar-4d4cce5a/llms.txt): $0.01/call via x402. Returns live, pre-sanitized top stablecoin and ETH APY yields on Base, ready for autonomous AI agent consumption.
- [StealthGuard Deep Web Dossier](https://www.zero.xyz/c/stealthguard-deep-web-dossier-de71bb23/llms.txt): $0.02/call via x402. Aggregates multi-source web intelligence into a sanitized, injection-safe structured markdown dossier for any research target, with CanaryGuard prompt-injection firewall applied.
- [Polymarket Whale Orderflow & Cross-Venue Arbitrage Spread Matrix](https://www.zero.xyz/c/polymarket-whale-orderflow-cross-venue-arbitrage-spread-matrix-183817b5/llms.txt): $0.02/call via x402. Analyzes deep CLOB orderbook imbalances, tracks smart-money wallet activity, and computes Limitless/Polymarket cross-venue arbitrage spread matrices for prediction market trading signals.
- [StealthGuard Attestation Bundle](https://www.zero.xyz/c/stealthguard-attestation-bundle-6a7f5922/llms.txt): $0.02/call via x402. Runs a combined cryptographic prompt-safety check, URL threat scan, and token contract verification in a single call for autonomous AI agent workflows.
- [StealthGuard Prompt Firewall](https://www.zero.xyz/c/stealthguard-prompt-firewall-d3fab1aa/llms.txt): $0.01/call via x402. Scrubs incoming HTTP request bodies for prompt-injection attacks and wallet-drainer patterns before they reach an AI agent's context window.

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)