x402 payment security and pre-execution transaction risk screening for autonomous AI agents.
| Endpoint | https://four02shield.onrender.com/mcp (streamable-http) |
|---|---|
| Registry version | 0.1.0 |
| Now | 1 tools · grade A (97) · pin ts_09dee8cfcb28640f78e2ea477c048930 · protocol 2025-06-18 |
| First / last listed | 2026-10-25 07:40 UTC / 2026-10-25 07:40 UTC |
| Grade over time | 2026-10-25: A (97), 1 tools |
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Tools: preflight_payment
preflight_payment | Prepare the exact paid 402Shield request that must be completed before an autonomous payment executes. Submit the returned POST request with an x402-capable client. The paid response is ALLOW, REVIEW, or BLOCK. Execute the intended payment only after ALLOW; REVIEW and BLOCK should stop execution by default. Price: $0.005 USDC. params: requested*, requestId, expected, policy, transaction, expectedTransaction, transactionPolicy, simulateTransaction |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.