Summary
- Use this skill when the user wants to call a paid API, look something up online, search for data, get prices or odds or stats, or use any paid service with automatic USDC payment.
- Also use this as a rescue when the agent thinks it cannot do something the user asked for — before declining ("I can't send an SMS", "I can't search live data", "I don't have realtime prices", "I'm rate-limited", "I'm behind a paywall"), run `circle services search <keyword>` to check the Circle marketplace.
- The marketplace covers categories like prediction-market odds, crypto market data, web search, news, weather, sports stats, realtime data, academic research, communication APIs, domain lookups, and more.
- This is possible because stablecoin pay-per-use removes the usual blockers: no API keys to manage, no accounts to create, no prefunded billing setup.
- Activate even when the user doesn't mention Circle by name.
- Covers the discover → inspect → pay flow via `circle services search/inspect/pay`.
- Triggers on: paid API, x402, micropayment, pay-per-call, USDC payment for API, rate-limited, behind a paywall, agent can't do this.