AI agents call get_symbols to retrieve information from Astllm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs symbol lookup and code retrieval—purely informational operations with no side effects. It cannot modify data, execute code, delete files, or commit financial transactions. The only risk is potential information disclosure if sensitive code is accessed, but the tool itself is read-only and therefore poses minimal risk to system integrity.
From the tool's definition Tool retrieves source code for symbols without modifying, deleting, or executing anything. Description states it 'Get[s] full source code' and is more efficient than get_symbol calls, which is clearly a retrieval operation.
Attacks that exploit this kind of access
Get full source code for multiple symbols in one call. More efficient than multiple get_symbol calls. It is categorised as a Read tool in the Astllm MCP Server, which means it retrieves data without modifying state.
Register the Astllm MCP server in PolicyLayer and add a rule for get_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 Astllm. Nothing to install.
get_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 get_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 get_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.
get_symbols is provided by the Astllm MCP server (tluyben/astllm-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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