Retrieve and decompress previously stored data by key.
AI agents call retrieve to retrieve information from Mcp Compress without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads existing compressed data from storage and decompresses it for access. It has no capability to modify, delete, or execute operations. The blast radius of misuse is limited to potential unauthorized information disclosure of stored data, which is a Read-category concern. Confidence is high because the description unambiguously indicates data retrieval without side effects.
From the tool's definition retrieve and decompress previously stored data by key — retrieves data with no modification or side effects. The word 'retrieve' indicates a query operation, and 'decompress' is a reversible transformation applied to data already in storage.
Attacks that exploit this kind of access
Retrieve and decompress previously stored data by key. It is categorised as a Read tool in the Mcp Compress MCP Server, which means it retrieves data without modifying state.
Register the Mcp Compress MCP server in PolicyLayer and add a rule for retrieve: 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 Mcp Compress. Nothing to install.
retrieve 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 retrieve 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 retrieve. 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.
retrieve is provided by the Mcp Compress MCP server (shipitandpray/mcp-compress). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
retrieve is one line of Mcp Compress's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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