Process a full or partial refund for a completed transaction. The original transaction ID must be provided. Refund is processed through the same provider.
AI agents use refund to commit financial operations through Africa Payments MCP — usually the final step of a payment, billing, or trading workflow. A call moves real money.
A refund is a reversal of funds that commits a financial obligation—money flows out of an account. Even though refunds are nominally 'reversible' compared to destructive operations, they still constitute actual movement of financial assets and fall under the Financial category, which takes precedence over Write or Execute.
From the tool's definition Tool name 'refund' combined with description 'Process a full or partial refund for a completed transaction' explicitly indicates money movement.
Attacks that exploit this kind of access
Process a full or partial refund for a completed transaction. The original transaction ID must be provided. Refund is processed through the same provider. It is categorised as a Financial tool in the Africa Payments MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Africa Payments MCP server in PolicyLayer and add a rule for refund: 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 Africa Payments MCP. Nothing to install.
refund is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the refund 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.
Set action: deny in the PolicyLayer policy for refund. 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.
refund is provided by the Africa Payments MCP server (kenyaclaw/africa-payments-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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