streamfog_list_lenses
AI agents call streamfog_list_lenses to retrieve information from Streamfog MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries available lenses for an AR filter system. It retrieves data with no side effects, fitting the Read category. Severity is low because listing available effects poses minimal security risk even if accessed by an untrusted agent.
From the tool's definition Tool name 'streamfog_list_lenses' contains the verb 'list', which is a read operation that retrieves/enumerates available lenses without modifying state. No description provided, but the verb and pattern are unambiguous.
Attacks that exploit this kind of access
streamfog_list_lenses. It is categorised as a Read tool in the Streamfog MCP MCP Server, which means it retrieves data without modifying state.
Register the Streamfog MCP server in PolicyLayer and add a rule for streamfog_list_lenses: 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 Streamfog MCP. Nothing to install.
streamfog_list_lenses 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 streamfog_list_lenses 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 streamfog_list_lenses. 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.
streamfog_list_lenses is provided by the Streamfog MCP server (sandraschi/streamfog-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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