This record as markdown: /tools/kiln/webcam-stream.md
What webcam_stream does on Kiln
AI agents call webcam_stream to retrieve information from Kiln without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why webcam_stream is rated Low
Webcam streaming is a read-only operation that retrieves video feed data from a connected camera. While the tool provides control over the stream itself (e.g., enabling/disabling, adjusting quality), it does not create, modify, delete, or execute operations on the printer hardware or its data.
From the tool's definition Tool name 'webcam_stream' combined with description 'Control the MJPEG webcam streaming proxy' indicates retrieval and transmission of video stream data.
Attacks that exploit this kind of access
The rule that runs webcam_stream safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Kiln, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For webcam_stream, this is the rule to start with:
webcam_stream 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 Kiln, apply this rule, and every webcam_stream call is checked against it from then on.
Questions about webcam_stream
Control the MJPEG webcam streaming proxy. It is categorised as a Read tool in the Kiln MCP Server, which means it retrieves data without modifying state.
Register the Kiln MCP server in PolicyLayer and add a rule for webcam_stream: 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 Kiln. Nothing to install.
webcam_stream 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 webcam_stream 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 webcam_stream. 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.
webcam_stream is provided by the Kiln MCP server (codeofaxel/Kiln). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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