PaymentOracle — ES256K-signed receipts for x402 payments on USDC+EURC (Base) and XRP+RLUSD (XRPL).
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Scored across 6 tools
Each tool has a distinct, non-overlapping purpose: health check, quoting payment intents, verifying transactions, issuing receipts, retrieving receipts, and getting the latest proof. No two tools could be confused.
All tool names use consistent snake_case and follow a verb_noun pattern (get_, issue_, quote_, verify_) except health_check which is noun_noun but still clear and fits the style.
With 6 tools, the server is well-scoped for its purpose. Each tool corresponds to a distinct operation in the payment receipt lifecycle, and there are no redundant or missing core functions.
The tool set covers the essential workflow: quote, verify, issue, retrieve, plus health and proof. Missing are operations like listing intents or canceling payments, but these are not critical for the primary use case.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
get_proof_latestget_receipthealth_checkissue_receiptquote_paymentverify_paymentx402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.
Ed25519-signed ground-truth oracle — 63 paid x402 tools live on Base mainnet.
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
914 paid market-data & token-safety endpoints — keyless x402 USDC: Base, Solana, XRPL, +8 chains
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