AI agents call parse_citation_with_citeurl to retrieve information from CourtListener MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name implies parsing a legal citation, which is a read-only operation. CiteURL is a known Python library for parsing legal citations into structured data. No description is provided, which lowers confidence, but the naming convention and server context strongly suggest a non-destructive parsing/lookup operation.
From the tool's definition Tool name 'parse_citation_with_citeurl' suggests parsing/analyzing a citation string using the CiteURL library, which is a read/parse operation with no side effects.
Documented attack patterns abuse exactly the kind of access parse_citation_with_citeurl gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CourtListener MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for parse_citation_with_citeurl:
{
"version": "1",
"default": "deny",
"tools": {
"parse_citation_with_citeurl": {}
}
}parse_citation_with_citeurl is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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parse_citation_with_citeurl. It is categorised as a Read tool in the CourtListener MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CourtListener MCP Server MCP server in PolicyLayer and add a rule for parse_citation_with_citeurl: 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 CourtListener MCP Server. Nothing to install.
parse_citation_with_citeurl 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 parse_citation_with_citeurl 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 parse_citation_with_citeurl. 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.
parse_citation_with_citeurl is provided by the CourtListener MCP Server MCP server (travis-prall/court-listener-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CourtListener MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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18 CourtListener MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.