This record as markdown: /tools/ruflo/cve-lookup.md
What cve_lookup does on Ruflo
AI agents call cve_lookup to retrieve information from Ruflo without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why cve_lookup is rated Low
This tool retrieves vulnerability information from a CVE database without modifying, executing code, or causing destructive changes. While CVE information could theoretically be used to exploit systems, the tool itself is merely a read operation that queries existing security data. The blast radius is minimal since it only returns information already in public vulnerability databases.
From the tool's definition The tool name 'cve_lookup' and description 'Lookup CVE details' indicate a query/retrieval operation that accesses CVE (Common Vulnerabilities and Exposures) information.
Attacks that exploit this kind of access
The rule that runs cve_lookup safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ruflo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cve_lookup, this is the rule to start with:
cve_lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ruflo, apply this rule, and every cve_lookup call is checked against it from then on.
Questions about cve_lookup
Lookup CVE details. 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 cve_lookup: 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.
cve_lookup 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 cve_lookup 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 cve_lookup. 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.
cve_lookup 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.
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