Check context usage ratio and decide whether to compact: none / warn / compact. Default policy: warn at 80%, compact at 100%.
AI agents call check_compact to retrieve information from AutoDev MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read-only assessment of context usage metrics and returns a recommendation. It retrieves information about resource consumption and makes a diagnostic determination, but does not execute code, modify data, or trigger external operations. This is purely an informational query, placing it in the Read category with low severity.
From the tool's definition Tool description indicates it "check[s] context usage ratio and decide[s]" without modifying or deleting data. The output is a status determination (none/warn/compact) with no side effects on actual data or system state.
Attacks that exploit this kind of access
Check context usage ratio and decide whether to compact: none / warn / compact. Default policy: warn at 80%, compact at 100%. It is categorised as a Read tool in the AutoDev MCP MCP Server, which means it retrieves data without modifying state.
Register the AutoDev MCP server in PolicyLayer and add a rule for check_compact: 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 AutoDev MCP. Nothing to install.
check_compact 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 check_compact 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 check_compact. 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.
check_compact is provided by the AutoDev MCP server (rookiejefren/autocoding-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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