margin
Margin / Markup / Price Calculator — Solve selling price, profit, margin% and markup% from cost and one known value.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/margin.md
What margin does on Gateway
AI agents call margin 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 |
|---|---|---|---|
cost | number | Yes | Unit cost in USD |
price | number | — | Selling price in USD (provide this OR margin_pct OR markup_pct) |
margin_pct | number | — | Target net margin percent |
markup_pct | number | — | Target markup percent on cost |
Parameters from the server's own tool schema.
Why margin is rated Low
This is a pure calculation tool that takes numeric inputs and returns computed financial metrics. It performs read-only mathematical operations with no side effects on stored data or external systems. While the inputs relate to pricing and profit, the tool itself does not move money, create financial obligations, or modify any persistent state—it simply performs arithmetic and returns results.
From the tool's definition The tool description states it 'Solve[s] selling price, profit, margin% and markup%' — it computes and returns calculated values based on input parameters (cost and one known value).
Attacks that exploit this kind of access
The rule that runs margin 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 margin, this is the rule to start with:
margin 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 margin call is checked against it from then on.
Questions about margin
Margin / Markup / Price Calculator — Solve selling price, profit, margin% and markup% from cost and one known value. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
margin accepts 4 parameters: cost, price, margin_pct, markup_pct. Required: cost. 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 margin: 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.
margin 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 margin 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 margin. 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.
margin 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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