Analyze table and list changes in the runner
AI agents call ui_structured_changes to retrieve information from UI Bridge MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and inspects structural data about changes to UI tables and lists. It performs observation and analysis without creating, modifying, deleting, or executing actions. The 'analyze' operation is characteristic of Read category tools that query or inspect state. No side effects or modifications to data are implied by the description.
From the tool's definition Tool name 'ui_structured_changes' and description 'Analyze table and list changes in the runner' indicate passive analysis and inspection of UI changes without modification. The verb 'analyze' denotes read-only operation.
Attacks that exploit this kind of access
Analyze table and list changes in the runner. It is categorised as a Read tool in the UI Bridge MCP MCP Server, which means it retrieves data without modifying state.
Register the UI Bridge MCP server in PolicyLayer and add a rule for ui_structured_changes: 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 UI Bridge MCP. Nothing to install.
ui_structured_changes 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 ui_structured_changes 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 ui_structured_changes. 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.
ui_structured_changes is provided by the UI Bridge MCP server (qontinui/ui-bridge-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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