Check if ast-grep is available and get version information
AI agents call check_ast_grep to retrieve information from Code Search MCP 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 check of tool availability and version metadata. It has no side effects, does not execute code or scripts, does not modify data, and does not trigger external operations. It is equivalent to a simple status query or version inspection, which is a Read category operation with low severity.
From the tool's definition Tool name 'check_ast_grep' and description 'Check if ast-grep is available and get version information' indicate a query operation that retrieves system/tool status without modifying any data.
Attacks that exploit this kind of access
Check if ast-grep is available and get version information. It is categorised as a Read tool in the Code Search MCP MCP Server, which means it retrieves data without modifying state.
Register the Code Search MCP server in PolicyLayer and add a rule for check_ast_grep: 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 Code Search MCP. Nothing to install.
check_ast_grep 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 check_ast_grep 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 check_ast_grep. 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.
check_ast_grep is provided by the Code Search MCP server (llmtooling/code-search-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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