AI agents call list_skills to retrieve information from Codevira MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries skill data from the Codevira knowledge base. It performs no side effects, does not execute code, does not modify data, and does not delete anything. The 'status=' parameter suggests filtering on a status field, which is typical of read-only query operations. Severity is low because data retrieval with no side effects poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'list_skills' with description indicating 'Filtered list of skills' — verb 'list' and 'filtered' indicate data retrieval without modification.
Documented attack patterns abuse exactly the kind of access list_skills gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Codevira MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list_skills:
{
"version": "1",
"default": "deny",
"tools": {
"list_skills": {}
}
}list_skills is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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v3.1.0 M3: Filtered list of skills. status=. It is categorised as a Read tool in the Codevira MCP MCP Server, which means it retrieves data without modifying state.
Register the Codevira MCP server in PolicyLayer and add a rule for list_skills: 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 Codevira MCP. Nothing to install.
list_skills 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 list_skills 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 list_skills. 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.
list_skills is provided by the Codevira MCP server (sachinshelke/codevira). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Codevira MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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48 Codevira MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.