isw_airtime_recharge
Top up a phone number through VAS airtime. Requires confirm: true.
This record as markdown: /tools/io-github-dairus01-interswitch-mcp-server/isw-airtime-recharge.md
What isw_airtime_recharge does on Interswitch
AI agents use isw_airtime_recharge to commit financial operations through Interswitch, usually the final step of a payment, billing, or trading workflow. A call moves real money.
Why isw_airtime_recharge is rated Critical
Airtime recharge is a financial operation that moves monetary value to purchase airtime credit for a phone number. It commits a financial obligation/payment through the Interswitch payment infrastructure, making it a Financial category tool with high severity due to potential for misuse at scale.
From the tool's definition 'Top up a phone number through VAS airtime' and server description mentions 'airtime' as a financial API; 'Requires confirm: true' indicates a real financial transaction
Attacks that exploit this kind of access
The rule that runs isw_airtime_recharge safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Interswitch, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For isw_airtime_recharge, this is the rule to start with:
Any call to isw_airtime_recharge is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Interswitch, apply this rule, and every isw_airtime_recharge call is checked against it from then on.
Questions about isw_airtime_recharge
Top up a phone number through VAS airtime. Requires confirm: true. It is categorised as a Financial tool in the Interswitch MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Interswitch MCP server in PolicyLayer and add a rule for isw_airtime_recharge: 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 Interswitch. Nothing to install.
isw_airtime_recharge 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 isw_airtime_recharge 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 isw_airtime_recharge. 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.
isw_airtime_recharge is provided by the Interswitch MCP server (interswitch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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