deactivate_authorization

THE RISK

Critical Risk

Why deactivate_authorization needs a policy

Deactivating a payment authorization is an irreversible action that removes the ability to charge a customer's saved card/payment method. 'Forgotten' implies permanent removal. This cannot be undone — once deactivated, the authorization token is invalidated and future charges against it would fail, making this Destructive in nature with high severity as it permanently affects payment capabilities for a customer.

From the tool's definition Deactivate a payment authorization when a card needs to be forgotten

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

POLICY

How to control deactivate_authorization

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 deactivate_authorization:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "deactivate_authorization"
  ]
}

deactivate_authorization disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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.

RESTRICT THIS TOOL →

Free to start. No card required.

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 Execute resend_transfers_otp Generates a new OTP and sends to customer for transfer verification Write create_customer Create a new customer in Paystack

All 28 Paystack tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Paystack → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-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.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about deactivate_authorization

What does the deactivate_authorization tool do? +

Deactivate a payment authorization when a card needs to be forgotten. It is categorised as a Destructive tool in the Paystack MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on deactivate_authorization? +

Register the Paystack MCP server in PolicyLayer and add a rule for deactivate_authorization: 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 deactivate_authorization? +

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

Can I rate-limit deactivate_authorization? +

Yes. Add a rate_limit block to the deactivate_authorization 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 deactivate_authorization completely? +

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

deactivate_authorization 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.

CHECK YOUR STACK →