Recommend literacy-growth chart picks for a dataset given an AudienceProfile. Returns charts the data supports but the audience is unfamiliar with (familiarity ≤ 3, or ≤ 4 at exposureLevel 2), each paired with the familiar chart it could substitute for and a rationale. Use when the consumer wants...
AI agents call suggestStretchCharts to retrieve information from Semiotic without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
suggestStretchCharts retrieves and analyzes data to provide visualization recommendations. It queries a dataset and an AudienceProfile to suggest chart types, returning comparative analysis (familiar vs. unfamiliar charts). This is purely informational with no side effects—no data is created, modified, deleted, or executed.
From the tool's definition Tool returns recommendations and suggestions; describes 'recommend', 'returns charts', and 'paired with...rationale' — all read-only analytical outputs with no modification, deletion, or execution of code/commands.
Attacks that exploit this kind of access
Recommend literacy-growth chart picks for a dataset given an AudienceProfile. Returns charts the data supports but the audience is unfamiliar with (familiarity ≤ 3, or ≤ 4 at exposureLevel 2), each paired with the familiar chart it could substitute for and a rationale. Use when the consumer wants to gently expose users to less familiar but more analytically appropriate visualizations. It is categorised as a Read tool in the Semiotic MCP Server, which means it retrieves data without modifying state.
Register the Semiotic MCP server in PolicyLayer and add a rule for suggestStretchCharts: 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 Semiotic. Nothing to install.
suggestStretchCharts 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 suggestStretchCharts 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 suggestStretchCharts. 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.
suggestStretchCharts is provided by the Semiotic MCP server (semiotic). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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