List available query templates. Args: language: Optional language to filter by Returns: Available templates
AI agents call list_query_templates_tool to retrieve information from Tree Sitter without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation that retrieves metadata about available query templates. It has no side effects, does not execute code, and does not modify any state. The operation is purely informational and safe for an AI agent to invoke without risk of unintended consequences.
From the tool's definition The tool 'list_query_templates_tool' retrieves and returns 'Available templates' with no modification capability. The description indicates a query/listing operation with optional filtering by language parameter.
Documented attack patterns abuse exactly the kind of access list_query_templates_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tree Sitter, and nothing reaches the server without passing your rules. This is the rule we recommend for list_query_templates_tool:
{
"version": "1",
"default": "deny",
"tools": {
"list_query_templates_tool": {}
}
}list_query_templates_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available query templates. Args: language: Optional language to filter by Returns: Available templates. It is categorised as a Read tool in the Tree Sitter MCP Server, which means it retrieves data without modifying state.
Register the Tree Sitter MCP server in PolicyLayer and add a rule for list_query_templates_tool: 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 Tree Sitter. Nothing to install.
list_query_templates_tool 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 list_query_templates_tool 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 list_query_templates_tool. 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.
list_query_templates_tool is provided by the Tree Sitter MCP server (wrale/mcp-server-tree-sitter). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 Tree Sitter tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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26 Tree Sitter tools catalogued and risk-classified — across an index of 42,500+ MCP servers.