Apercu rapide d'une ressource : schema (colonnes + types) et 5 premieres lignes.
AI agents call preview_resource to retrieve information from Données Québec MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and displays metadata (schema information) and a sample of data (first 5 rows) from a resource. This is purely informational—no data is modified, deleted, executed, or financially impacted. It functions as a read-only preview mechanism for data exploration.
From the tool's definition Tool description states "Apercu rapide d'une ressource : schema (colonnes + types) et 5 premieres lignes" (quick preview of a resource: schema and first 5 rows). This is a retrieval operation with no side effects.
Attacks that exploit this kind of access
Apercu rapide d'une ressource : schema (colonnes + types) et 5 premieres lignes. It is categorised as a Read tool in the Données Québec MCP MCP Server, which means it retrieves data without modifying state.
Register the Données Québec MCP server in PolicyLayer and add a rule for preview_resource: 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 Données Québec MCP. Nothing to install.
preview_resource 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 preview_resource 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 preview_resource. 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.
preview_resource is provided by the Données Québec MCP server (stefen-taime/donneesqc-mcp). 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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