// MCP TOOL REFERENCE

payRenewal

Pay an existing payment intent (e.g., from a renewal notification). Fetches intent details, validates, and processes USDC payment.

Part of the Helius MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

helius-mcp Financial

// WHEN AI AGENTS USE THIS TOOL

AI agents use payRenewal to initiate financial transactions through Helius. Financial operations involve real money and are irreversible once processed. Intercept blocks financial tools by default, requiring explicit human approval with transaction-level limits to prevent unauthorised spending.

// WHY ENFORCE A POLICY ON PAYRENEWAL

payRenewal moves real money. Without a policy, an autonomous agent could initiate transactions that drain accounts or exceed budgets. Intercept blocks financial tools by default, requiring human-in-the-loop approval with configurable spending limits per transaction and per time window.

// RECOMMENDED POLICY

Financial tools involve real money. Block by default and require explicit human approval before enabling.

helius.yaml

tools:
  payRenewal:
    rules:
      - action: deny
        reason: "Requires human approval"

See the full Helius policy for all 63 tools.

// DETAILS

Tool Name payRenewal

Category Financial

MCP Server Helius MCP Server

Risk Level Critical

// MORE HELIUS TOOLS

Financial transferSol Financial transferToken Destructive deleteWebhook Execute parseTransactions Execute recommendStack Write agenticSignup Write createWebhook Write generateKeypair

View all 63 tools →

// WHAT CAN GO WRONG

Agents calling financial-class tools like payRenewal have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER FINANCIAL TOOLS ACROSS MCP SERVERS

Other tools in the Financial risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

Atv build_deposit_tx Atv build_queue_withdraw_tx Atv build_redeem_withdraw_tx Atv build_unqueue_withdraw_tx Atv build_withdraw_tx AbraFlexi bank_transaction_create

// IN CONTEXT OF CRITICAL RISK

payRenewal is one of the critical-risk operations in Helius. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

// RELATED READING

// FAQ

What does the payRenewal tool do? +

Pay an existing payment intent (e.g., from a renewal notification). Fetches intent details, validates, and processes USDC payment.. It is categorised as a Financial tool in the Helius MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on payRenewal? +

Add a rule in your Intercept YAML policy under the tools section for payRenewal. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Helius MCP server.

What risk level is payRenewal? +

payRenewal is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit payRenewal? +

Yes. Add a rate_limit block to the payRenewal rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block payRenewal completely? +

Set action: deny in the Intercept policy for payRenewal. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides payRenewal? +

payRenewal is provided by the Helius MCP server (helius-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

payRenewal

Let agents act without letting them run wild.