AI agents call metaharness_mcp_scan to retrieve information from Ruflo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Static security scans are read-only operations that examine code or configurations to identify vulnerabilities without making changes. No data is modified, deleted, or executed as a side effect. The incomplete description ('scan of' without completion) prevents higher confidence, but the word 'scan' combined with 'static' strongly suggests a non-destructive inspection tool.
From the tool's definition Tool name 'metaharness_mcp_scan' and description fragment 'static security scan of' indicate a scanning/analysis operation that retrieves or queries security information without modifying systems.
Attacks that exploit this kind of access
ADR-150 — static security scan of. It is categorised as a Read tool in the Ruflo MCP Server, which means it retrieves data without modifying state.
Register the Ruflo MCP server in PolicyLayer and add a rule for metaharness_mcp_scan: 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 Ruflo. Nothing to install.
metaharness_mcp_scan 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 metaharness_mcp_scan 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 metaharness_mcp_scan. 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.
metaharness_mcp_scan is provided by the Ruflo MCP server (ruvnet/ruflo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
metaharness_mcp_scan is one line of Ruflo'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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