feat(plugins): add ProofGate transaction guardrails plugin

[0xKairo]

Summary

Adds @goat-sdk/plugin-proofgate - transaction guardrails for AI agents. Validates and blocks unsafe DeFi transactions before execution.

Features

• 19 EVM chains supported - Ethereum, Base, Arbitrum, Optimism, Polygon, and more
• Auto-blocking - Optionally block unsafe transactions automatically
• On-chain proofs - Every validation recorded on Base mainnet
• Custom guardrails - Define your own validation policies

Tools

Tool	Description
proofgate_validate_transaction	Full validation with detailed response
proofgate_is_safe	Quick boolean safety check
proofgate_get_evidence	Retrieve on-chain proof

What Gets Validated

• Infinite approvals (blocked by default)
• Contract whitelists
• Value limits
• Balance checks
• Custom policies

Usage

import { proofgate } from "@goat-sdk/plugin-proofgate";

const tools = await getOnChainTools({
    wallet: viem(walletClient),
    plugins: [
        proofgate({
            apiKey: process.env.PROOFGATE_API_KEY,
            autoBlock: true,
        }),
        uniswap({ ... }),
        erc20(),
    ],
});

Links

• Website: https://www.proofgate.xyz
• Docs: https://www.proofgate.xyz/docs
• Dashboard: https://www.proofgate.xyz/dashboard

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