Get document table of contents as a nested tree. Each node includes an
AI agents call doc_toc to retrieve information from MinerU Document Explorer without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and returns document structure (table of contents) in a read-only manner. It has no side effects, does not execute code, does not modify data, and does not delete anything.
From the tool's definition Tool name 'doc_toc' and description 'Get document table of contents as a nested tree' indicate retrieval of structural metadata from documents without modification or execution.
Documented attack patterns abuse exactly the kind of access doc_toc gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MinerU Document Explorer, and nothing reaches the server without passing your rules. This is the rule we recommend for doc_toc:
{
"version": "1",
"default": "deny",
"tools": {
"doc_toc": {}
}
}doc_toc is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get document table of contents as a nested tree. Each node includes an. It is categorised as a Read tool in the MinerU Document Explorer MCP Server, which means it retrieves data without modifying state.
Register the MinerU Document Explorer MCP server in PolicyLayer and add a rule for doc_toc: 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 MinerU Document Explorer. Nothing to install.
doc_toc 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 doc_toc 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 doc_toc. 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.
doc_toc is provided by the MinerU Document Explorer MCP server (opendatalab/mineru-document-explorer). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 15 MinerU Document Explorer tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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15 MinerU Document Explorer tools catalogued and risk-classified — across an index of 42,500+ MCP servers.