vision.get_stream_state
Return buffer occupancy, timestamps, drops, and execution class for a stream.
This record as markdown: /tools/visionmcp/vision.get-stream-state.md
What vision.get_stream_state does on Visionmcp
AI agents call vision.get_stream_state to retrieve information from Visionmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why vision.get_stream_state is rated Low
This tool queries and returns metadata about a stream's current state (buffer, timestamps, drops, execution class). It performs no mutations, no code execution, and no destructive operations. It is a straightforward data retrieval operation, fitting the 'Read' category.
From the tool's definition Tool description states 'Return buffer occupancy, timestamps, drops, and execution class for a stream' — purely retrieves stream state information with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs vision.get_stream_state safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Visionmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For vision.get_stream_state, this is the rule to start with:
vision.get_stream_state 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 Visionmcp, apply this rule, and every vision.get_stream_state call is checked against it from then on.
Questions about vision.get_stream_state
Return buffer occupancy, timestamps, drops, and execution class for a stream. It is categorised as a Read tool in the Visionmcp MCP Server, which means it retrieves data without modifying state.
Register the Vision MCP server in PolicyLayer and add a rule for vision.get_stream_state: 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 Visionmcp. Nothing to install.
vision.get_stream_state 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 vision.get_stream_state 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 vision.get_stream_state. 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.
vision.get_stream_state is provided by the Vision MCP server (joshuahickscorp/visionmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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