savings_goal
Savings Goal Calculator — Months to reach a savings target at a given monthly amount, or the monthly amount needed for a fixed horizon.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/savings-goal.md
What savings_goal does on Gateway
AI agents call savings_goal 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 |
|---|---|---|---|
annual_return | number | — | Expected annual return as a PERCENT (default 0) |
target_amount | number | Yes | Savings target in USD |
target_months | integer | — | Months to reach the goal (solve-contribution mode) |
current_savings | number | — | Amount already saved in USD |
monthly_contribution | number | — | Monthly contribution in USD (time-to-goal mode) |
Parameters from the server's own tool schema.
Why savings_goal is rated Low
This is a computational tool that retrieves/calculates financial projections without executing financial operations, modifying persistent state, or triggering external systems. It has no side effects beyond returning calculated results.
From the tool's definition Tool performs calculations ('Months to reach a savings target' and 'monthly amount needed') based on user-provided parameters. No data is created, modified, deleted, or financial transactions are executed. It is a passive mathematical calculator.
Attacks that exploit this kind of access
The rule that runs savings_goal 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 savings_goal, this is the rule to start with:
savings_goal 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 savings_goal call is checked against it from then on.
Questions about savings_goal
Savings Goal Calculator — Months to reach a savings target at a given monthly amount, or the monthly amount needed for a fixed horizon. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
savings_goal accepts 5 parameters: annual_return, target_amount, target_months, current_savings, monthly_contribution. Required: target_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 savings_goal: 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.
savings_goal 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 savings_goal 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 savings_goal. 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.
savings_goal 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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