Boundary Guard x402

Preflight readiness checker for x402 and MCP tool sellers before they list on marketplaces or route paid agent traffic. Exposes tools to scan public metadata (OpenAPI, llms.txt, agents.txt, MCP discovery endpoints), probe 402 payment challenges without signing or spending, generate launch packs with claim-bounded listing copy, and create deterministic trust receipts. Built by LarryBuildsAI as a seller-side evidence layer. You'd use this when packaging a paid agent tool for submission to Bazaar, Agentic.Market, or MCP directories and need a readiness report showing what buyers will see, what's missing, and which claims are safe to make. Not a payment processor, security audit, or marketplace itself.