Return the record whose syntax exactly matches the input.
AI agents call lookup-syntax to retrieve information from APLCart MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data based on a syntax pattern match, which is a read-only query operation. It has no side effects, cannot modify or delete data, and cannot execute code. The blast radius of misuse is minimal — an attacker could only discover APL idioms already in the collection. Classified as Read with low severity.
From the tool's definition Tool performs exact syntax lookup and returns matching records from the APLCart idiom collection. Description states 'Return the record whose `syntax` exactly matches the input' — a retrieval operation with no modification, deletion, or execution of arbitrary…
Attacks that exploit this kind of access
Return the record whose syntax exactly matches the input. It is categorised as a Read tool in the APLCart MCP Server MCP Server, which means it retrieves data without modifying state.
Register the APLCart MCP Server MCP server in PolicyLayer and add a rule for lookup-syntax: 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 APLCart MCP Server. Nothing to install.
lookup-syntax 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 lookup-syntax 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 lookup-syntax. 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.
lookup-syntax is provided by the APLCart MCP Server MCP server (xpqz/ac-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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