AI agents call get_chunk_headers to retrieve information from Archive Agent without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves headers from file chunks—a read-only query operation with no side effects. The lack of description lowers confidence slightly, but the naming pattern and context within a semantic file tracking system clearly indicate data retrieval rather than modification, execution, or destruction.
From the tool's definition Tool name 'get_chunk_headers' indicates retrieval of chunk metadata/headers from archived files. No description provided, but the pattern matches sibling tools (get_answer_rag, get_files_changed, get_files_tracked) which are all read-only query operations.
Documented attack patterns abuse exactly the kind of access get_chunk_headers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Archive Agent, and nothing reaches the server without passing your rules. This is the rule we recommend for get_chunk_headers:
{
"version": "1",
"default": "deny",
"tools": {
"get_chunk_headers": {}
}
}get_chunk_headers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_chunk_headers. It is categorised as a Read tool in the Archive Agent MCP Server, which means it retrieves data without modifying state.
Register the Archive Agent MCP server in PolicyLayer and add a rule for get_chunk_headers: 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 Archive Agent. Nothing to install.
get_chunk_headers 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_chunk_headers 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_chunk_headers. 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_chunk_headers is provided by the Archive Agent MCP server (shredengineer/archive-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Archive Agent tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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7 Archive Agent tools catalogued and risk-classified — across an index of 42,500+ MCP servers.