List available symbols in a Julia package or module
AI agents call list-package to retrieve information from Julia Documentation MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves information about available symbols in Julia packages or modules. It performs a read-only operation that returns documentation data without creating, modifying, deleting, or executing any code. The low severity reflects minimal risk even if misused—returning symbol lists poses no operational, financial, or destructive harm.
From the tool's definition Tool name 'list-package' and description 'List available symbols in a Julia package or module' indicates retrieval of documentation metadata with no side effects.
Documented attack patterns abuse exactly the kind of access list-package gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Julia Documentation MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list-package:
{
"version": "1",
"default": "deny",
"tools": {
"list-package": {}
}
}list-package is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available symbols in a Julia package or module. It is categorised as a Read tool in the Julia Documentation MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Julia Documentation MCP Server MCP server in PolicyLayer and add a rule for list-package: 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 Julia Documentation MCP Server. Nothing to install.
list-package 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 list-package 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 list-package. 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.
list-package is provided by the Julia Documentation MCP Server MCP server (jonathanfischer97/juliadoc-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Julia Documentation MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
4 Julia Documentation MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.