resend_transfers_otp

THE RISK

High Risk

Why resend_transfers_otp needs a policy

This tool triggers an external operation — generating and delivering an OTP message to a customer — as part of a transfer verification flow. While it doesn't directly move money, it is a critical step in authorizing financial transfers. Misuse could flood customers with OTP messages or be used to manipulate transfer authorization flows.

From the tool's definition Generates a new OTP and sends to customer for transfer verification

Documented attack patterns abuse exactly the kind of access resend_transfers_otp gives an agent:

POLICY

How to control resend_transfers_otp

PolicyLayer is an MCP gateway — it sits between your AI agents and Paystack, and nothing reaches the server without passing your rules. This is the rule we recommend for resend_transfers_otp:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "resend_transfers_otp": {
      "limits": [
        {
          "counter": "resend_transfers_otp_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

resend_transfers_otp stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Paystack — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Paystack tools

Financial initialize_transaction Initialize a transaction to accept payment on Paystack Financial charge_authorization Charge a previously authorized card Financial finalize_disable_otp Finalize the request to disable OTP on your transfers Financial partial_debit Charge a partial amount from a previously authorized card Financial disable_transfers_otp Disable OTP requirement for transfers Financial enable_transfers_otp Enable OTP requirement for transfers Destructive deactivate_authorization Deactivate a payment authorization when a card needs to be forgotten Write create_customer Create a new customer in Paystack

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Go deeper

High-risk tools in Paystack → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about resend_transfers_otp

What does the resend_transfers_otp tool do? +

Generates a new OTP and sends to customer for transfer verification. It is categorised as a Execute tool in the Paystack MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on resend_transfers_otp? +

Register the Paystack MCP server in PolicyLayer and add a rule for resend_transfers_otp: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Paystack. Nothing to install.

What risk level is resend_transfers_otp? +

resend_transfers_otp is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit resend_transfers_otp? +

Yes. Add a rate_limit block to the resend_transfers_otp rule in your PolicyLayer 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 resend_transfers_otp completely? +

Set action: deny in the PolicyLayer policy for resend_transfers_otp. 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 resend_transfers_otp? +

resend_transfers_otp is provided by the Paystack MCP server (kohasummons/paystack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Paystack tool call.

Start from Paystack, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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