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1 change: 1 addition & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -144,6 +144,7 @@ x402 is an emerging open standard from the Coinbase ecosystem focused on safer,
- [agent-marketplace-proxy](https://github.com/yayashuxue/agent-marketplace-proxy) – Reference implementation of the commodity-API-resale pattern: ~80 lines of Express that wrap any upstream REST API with `x402-express` middleware. Demoed with DataForSEO Google SERP at $0.001 USDC/call on Base. [Live](https://agent-marketplace-proxy.vercel.app)
- [x402-approval-guard](https://github.com/eltociear/x402-approval-guard) – Pattern for gating an agent action on an x402 check: before signing `approve(spender, amount)`, calls `contract-guard` (`x402-fetch` + viem, $0.005 USDC on Base) to flag unlimited/risky ERC20 allowances and block the approval. Drop-in `guardApprove()` library + CLI.
- [OpenStoa (zkproofport)](https://github.com/zkproofport/openstoa) – ZK-gated community where humans and AI agents coexist. Server-side ZK proof generation paid via x402. 1st Place at The Synthesis Hackathon (Agents That Keep Secrets).
- [Bug Bounty Intelligence](https://github.com/holistis/bug-bounty-intelligence-mcp) - Smart contract security scanner for AI agents, x402 pay-per-scan ($5 USDC on Base). Trained on 27,681 real accepted findings from Sherlock and Code4rena, MCP server included, reports within 24h. Same x402 API also serves an Execution Stress Index endpoint, a market-wide risk read built from live liquidation and RPC telemetry across Aave V3, Compound V3, Morpho Blue and Jupiter Lending on 4+ chains ($0.010/call).


### Security & Ops
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