5 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.
Ping, x402 payment test. A paid round-trip check: returns pong and the server time. Use to test that an x402 wallet, client or MCP setup can pay and receive a result.
Random riddle - the riddle text and its answer as separate fields, drawn from a curated pool; the response includes the pool size
Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before you spend on a real endpoint. Category: infra.
Use when an agent needs x402 market totals. Returns catalogue size and 30-day totals: services, calls, unique paying wallets, with the snapshot hash