maxugc/crosscheck

Independent checks for agents over MCP (`npx -y crosscheckapi`), paid per call in USDC on Base via x402 with a free Base Sepolia trial. `skillcheck` reviews a skill or MCP server's files before install (read, never run) for piped installers, credential and wallet reads, secrets sent over the network, persistence, hidden Unicode, and instructions aimed at the agent, with a free lookup for bundles already scanned; `accept` checks work another agent hands back against its task before payment; `check` reviews a draft before the human sees it. Every result carries a signed receipt and a public proof page.

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