tip_split
Tip & Bill Split Calculator — Tip amount, grand total and per-person share for a bill.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/tip-split.md
What tip_split does on Gateway
AI agents call tip_split to retrieve information from Gateway without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
tip_pct | number | — | Tip percent (default 18) |
round_up | boolean | — | Round each person's share up to the cent |
num_people | integer | — | Number of people splitting (default 1) |
bill_amount | number | Yes | Bill amount in USD |
Parameters from the server's own tool schema.
Why tip_split is rated Low
This is a calculator that computes and returns tip amounts and per-person shares based on input parameters. It retrieves or derives information without creating, modifying, or deleting persistent data, executing external operations, or moving funds. The tool fits squarely in the Read category with low severity because misuse would only result in incorrect calculations, not data loss or financial transactions.
From the tool's definition Tool name 'tip_split' and description 'Tip amount, grand total and per-person share for a bill' — performs calculation and retrieval of values with no data modification, deletion, or external side effects.
Attacks that exploit this kind of access
The rule that runs tip_split safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Gateway, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For tip_split, this is the rule to start with:
tip_split 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 Gateway, apply this rule, and every tip_split call is checked against it from then on.
Questions about tip_split
Tip & Bill Split Calculator — Tip amount, grand total and per-person share for a bill. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
tip_split accepts 4 parameters: tip_pct, round_up, num_people, bill_amount. Required: bill_amount. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway MCP server in PolicyLayer and add a rule for tip_split: 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 Gateway. Nothing to install.
tip_split 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 tip_split 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 tip_split. 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.
tip_split is provided by the Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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