Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.
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First seen 2 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
1
Directories
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4
Tools
From an anonymous probe
-
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| check_payment | Inspect an HTTPS URL for a live x402 402 challenge without sending payment. | Read-only |
| check_status | Check the live always-on SqueezeOS payment authority. | Read-only |
| list_paid_apis | List live SML x402 paid API operations from the canonical SqueezeOS OpenAPI document. | Read-only |
| payment_info | Return the canonical ScriptMasterLabs x402 payment network and receiver. Never spends. | Read-only |
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Official MCP Registry | x402 Pay — USDC API Payment Helper | - | 2 Oct 2026 |