AI agents call list_notebook_symbols to retrieve information from Ast Editor without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool's name clearly indicates a read-only operation that lists (enumerates) symbols from a notebook, consistent with the 'Read' category definition. Even though the description is empty, the naming convention and context within an AST-editor server (which provides surgical editing capabilities) suggest this is a metadata query tool.
From the tool's definition Tool name 'list_notebook_symbols' uses the verb 'list', which is a read operation that retrieves or queries data without side effects. The suffix 'symbols' indicates it retrieves code symbols or metadata from a notebook.
Documented attack patterns abuse exactly the kind of access list_notebook_symbols gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ast Editor, and nothing reaches the server without passing your rules. This is the rule we recommend for list_notebook_symbols:
{
"version": "1",
"default": "deny",
"tools": {
"list_notebook_symbols": {}
}
}list_notebook_symbols is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
list_notebook_symbols. It is categorised as a Read tool in the Ast Editor MCP Server, which means it retrieves data without modifying state.
Register the Ast Editor MCP server in PolicyLayer and add a rule for list_notebook_symbols: 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 Ast Editor. Nothing to install.
list_notebook_symbols 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_notebook_symbols 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_notebook_symbols. 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_notebook_symbols is provided by the Ast Editor MCP server (kambleakash0/agent-skills). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ast Editor, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
59 Ast Editor tools catalogued and risk-classified — across an index of 43,000+ MCP servers.