delete_symbol
AI agents call delete_symbol to permanently remove resources in Ast Editor — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
A tool that deletes symbols from code cannot be undone through normal reversal—deletions are destructive operations. While the description is empty, the tool name and the destructive nature of sibling operations (delete_in_body, delete_key) combined with the AST-editing context make it clear this performs irreversible removal. This poses a high blast radius if an AI agent accidentally targets the wrong symbol.
From the tool's definition Tool name 'delete_symbol' indicates irreversible deletion. Sibling tools include 'delete_in_body' and 'delete_key', and the server is described as performing 'structural edits across 11 languages' via AST manipulation.
Attacks that exploit this kind of access
delete_symbol. It is categorised as a Destructive tool in the Ast Editor MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Ast Editor MCP server in PolicyLayer and add a rule for delete_symbol: 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.
delete_symbol is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_symbol 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 delete_symbol. 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.
delete_symbol is provided by the Ast Editor MCP server (kambleakash0/ast-editor). 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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