Grey Ridge Signals — x402 Data & Security API

api.greyridgesignals.ai

Agent-native, pay-per-call data on Base mainnet (USDC via x402). No account, no API key — agents pay inline in USDC. Every endpoint returns HTTP 402 with a payment-required challenge (x402 v2, network eip155:8453 / Base, asset USDC) until a valid signed payment is provided. See /.well-known/x402 for the full machine-readable payment manifest and /mcp for MCP protocol access. Provider: Grey Ridge Signals Group LLC.

What we verified

Everything in this section is a check agenttru.st performed itself.

Assurance

bronze Bronze — agent card fetched over HTTPS with a valid certificate

Certificate

Valid for this hostname

DANE / TLSA

Not verified (TLSA query returned RCodeNameError)

Discovery

Well-known document

Protocols

A2A verified by handshake or card fetch, not merely advertised

Hosted in

? Unknown · Cloudflare, Inc. (AS13335)

The address did not geolocate — usually anycast hosting, where one address answers from many places at once.

First seen

31 Jul 2026

Last checked

7h ago

What the agent claims

Copied from the agent's own card. Not verified — the operator of api.greyridgesignals.ai controls every value below.

Protocol

a2a

Version

1.0.0

Capabilities

pushNotifications streaming

Agent card

https://api.greyridgesignals.ai/.well-known/agent-card.json

Advertised skills

• Spot Token Prices
  Live spot token prices from DefiLlama — pass comma-separated CoinGecko ids, get price/change_24h/symbol/confidence/timestamp. Route: GET /crypto/prices. Returns HTTP 402 (x402 v2, Base mainnet, USDC)…
  cryptopricesdefidata
• Cross-Venue Perp Funding Rates
  Cross-venue Hyperliquid+OKX+dYdX perp funding rates — top coins by 24h volume, per-venue funding + arb spread (bps), best long/short venue, premium/annualized signal, next_funding_ts, mark/oracle pric…
  cryptofundingperpshyperliquidarbitragedata
• DeFi Lending & LP Yields
  Top DeFi lending/LP yields — project, chain, symbol, APY breakdown + 1d/7d/30d APY trend, IL risk, mu/sigma, DefiLlama stability forecast, TVL. Filter by project, chain, or stablecoin-only. Sort by TV…
  defiyieldlendingapytvldata
• Polymarket Prediction Markets
  Live Polymarket prediction markets — question, outcomes, bestBid/bestAsk/spread, volume24hr/volume1wk, oneDayPriceChange, clobTokenIds, conditionId, category tags, liquidity, end date. Ranked by volum…
  prediction-marketspolymarketmarketscryptodata
• Base Mainnet On-Chain Reads
  Base mainnet blockchain data — block number, gas price (EIP-1559 base_fee/priority_fee + gas_price_usd), ETH balance (incl. balance_usd), ERC-20 token balance (with symbol/decimals), transaction detai…
  rpcbaseonchainblockchaindata
• Token Security / Honeypot Detector
  ERC-20 token security analysis for Base mainnet — EIP-1967/1822 proxy + upgradeability detection, bytecode dispatcher scan for mint/pause/blacklist/fee-setter/ownership selectors, owner() renouncement…
  securityrpcbaseonchaintokenhoneypotdata
• MCP Server Security Audit
  Security scan of a target MCP server — audits every advertised tool for prompt-injection / tool-poisoning / exfiltration / dangerous-capability / hidden-unicode (OWASP LLM01/LLM08). Returns structured…
  securitymcpauditprompt-injection
• Domain Enrichment & Tech-Risk Assessment
  Domain intelligence: firmographic + tech-stack enrichment with full subdomain enumeration via certificate-transparency logs (crt.sh, RDAP, DoH, HTTP fingerprint) + verdict based on domain age. Plus te…
  domainenrichmentsecuritycveriskdnswhoisdata

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