sig_figs
Significant Figures Rounder — Round a number to a given count of significant figures with scientific notation output.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/sig-figs.md
What sig_figs does on Gateway
AI agents call sig_figs 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 |
|---|---|---|---|
number | number | Yes | Number to round |
sig_figs | integer | — | Significant figures (default 3) |
Parameters from the server's own tool schema.
Why sig_figs is rated Low
sig_figs is a stateless calculator that performs mathematical rounding. It reads input parameters and returns computed output with no side effects, data mutations, or system operations. It poses minimal security risk as it cannot access, modify, or delete data, nor can it execute code or trigger external operations.
From the tool's definition Tool description: 'Round a number to a given count of significant figures with scientific notation output.' This is a pure mathematical computation that takes numeric input and returns a formatted numeric result.
Attacks that exploit this kind of access
The rule that runs sig_figs 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 sig_figs, this is the rule to start with:
sig_figs 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 sig_figs call is checked against it from then on.
Questions about sig_figs
Significant Figures Rounder — Round a number to a given count of significant figures with scientific notation output. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
sig_figs accepts 2 parameters: number, sig_figs. Required: number. 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 sig_figs: 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.
sig_figs 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 sig_figs 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 sig_figs. 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.
sig_figs 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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