Critical-risk tools in Helius
4 of the 63 tools in Helius are classified as critical risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.
Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.
Tools at critical risk
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deleteWebhookDestructiveDelete a webhook by its ID. This permanently removes the webhook and stops all notifications. Credit cost: 100 credits/call (management operation).
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payRenewalFinancialPay an existing payment intent (e.g., from a renewal notification). Fetches intent details, validates, and processes USDC payment.
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transferSolFinancialBEST FOR: sending native SOL from your MCP wallet to another address. PREFER transferToken for SPL tokens. Transfers native SOL using Helius Sender for optimal landing rates. Re...
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transferTokenFinancialBEST FOR: sending SPL tokens (USDC, BONK, JUP, etc.) from your MCP wallet to another address. PREFER transferSol for native SOL. Automatically creates recipient token account if...
Attacks that target this class
Critical-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.