Broadcasts a message to all connected browser extensions
AI agents invoke skippr_notify_all_extensions to trigger actions in Skippr Extension MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Broadcasting a message to all connected extensions triggers an external operation across multiple clients simultaneously. This is not a simple read or write — it executes an action (sending a broadcast) that causes side effects in all connected browser extensions. The blast radius is medium because a misconfigured or malicious message could affect all connected extension instances at once.
From the tool's definition Broadcasts a message to all connected browser extensions
Attacks that exploit this kind of access
Broadcasts a message to all connected browser extensions. It is categorised as a Execute tool in the Skippr Extension MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Skippr Extension MCP Server MCP server in PolicyLayer and add a rule for skippr_notify_all_extensions: 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 Skippr Extension MCP Server. Nothing to install.
skippr_notify_all_extensions is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the skippr_notify_all_extensions 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 skippr_notify_all_extensions. 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.
skippr_notify_all_extensions is provided by the Skippr Extension MCP Server MCP server (skippr-hq/extension-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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