remind_friend
Remind a friend to pay you back by generating a WhatsApp link. If amount is omitted, looks up the pending debt amount.
This record as markdown: /tools/nitrostack/remind-friend.md
What remind_friend does on Nitrostack
AI agents call remind_friend to retrieve information from Nitrostack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why remind_friend is rated Low
Even though remind_friend only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs remind_friend safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nitrostack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For remind_friend, this is the rule to start with:
remind_friend is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nitrostack, apply this rule, and every remind_friend call is checked against it from then on.
Questions about remind_friend
Remind a friend to pay you back by generating a WhatsApp link. If amount is omitted, looks up the pending debt amount. It is categorised as a Read tool in the Nitrostack MCP Server, which means it retrieves data without modifying state.
Register the Nitrostack MCP server in PolicyLayer and add a rule for remind_friend: 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 Nitrostack. Nothing to install.
remind_friend is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the remind_friend 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 remind_friend. 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.
remind_friend is provided by the Nitrostack MCP server (nitrocloudofficial/nitrostack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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