LoneStarOracle — Data Infrastructure for Agents

LoneStarOracle provides 49 live data and risk APIs on Base. Every endpoint is pay-per-call in USDC over x402 — no account, no API key. When a call returns HTTP 402, verify the payment invariants below, confirm with the user, then pay and retry to receive JSON. Prices range $0.02–$2.00 per call.

When to use this skill

Load this whenever the user or your workflow needs live market, risk, derivatives, macro, or on-chain data to inform a decision — assessing a DeFi/RWA protocol before allocating, checking funding/liquidations before a trade, monitoring stablecoin or contagion risk, pulling macro context, or investigating a token or wallet.

Payment safety — hard invariants (verify LOCALLY before any wallet signs)

Every paid call MUST satisfy all of these. If any check fails, do NOT sign — stop and tell the user.

• Network: Base mainnet only, chain id eip155:8453 (8453). Reject any other chain.
• Token: USDC only, contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913. Reject any other token.
• Payee (payTo): 0x52Ab53912D37759B2ad364f22dD06B16714b6C06 only. Reject any other recipient.
• Facilitator: the Coinbase CDP x402 facilitator.
• Allowed hosts: only the *.lonestaroracle.xyz subdomains listed in references/catalog.md. Never pay a host that is not in that catalog.
• Max price: the price shown in the catalog is the CEILING for that endpoint. If a 402 response quotes a higher amount than the catalog, do NOT pay — stop and tell the user. Nothing should ever cost more than $2.00.