bazel_ios_accessibility_snapshot
Capture the accessibility element tree of the current simulator screen. Useful for finding tap targets and verifying UI state.
This record as markdown: /tools/xcodebazelmcp-xcodebazelmcp/bazel-ios-accessibility-snapshot.md
What bazel_ios_accessibility_snapshot does on XcodeBazelMCP
AI agents call bazel_ios_accessibility_snapshot to retrieve information from XcodeBazelMCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why bazel_ios_accessibility_snapshot is rated Low
This tool reads and returns data about the current state of a simulator screen without creating, modifying, deleting, or executing operations. It is a diagnostic/inspection tool that produces no irreversible changes and has minimal blast radius if misused.
From the tool's definition Tool description states it 'Capture[s] the accessibility element tree' and is 'Useful for finding tap targets and verifying UI state' — purely informational retrieval with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs bazel_ios_accessibility_snapshot safely
PolicyLayer is an MCP gateway: it sits between your AI agents and XcodeBazelMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bazel_ios_accessibility_snapshot, this is the rule to start with:
bazel_ios_accessibility_snapshot 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 XcodeBazelMCP, apply this rule, and every bazel_ios_accessibility_snapshot call is checked against it from then on.
Questions about bazel_ios_accessibility_snapshot
Capture the accessibility element tree of the current simulator screen. Useful for finding tap targets and verifying UI state. It is categorised as a Read tool in the XcodeBazelMCP MCP Server, which means it retrieves data without modifying state.
Register the XcodeBazel MCP server in PolicyLayer and add a rule for bazel_ios_accessibility_snapshot: 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 XcodeBazelMCP. Nothing to install.
bazel_ios_accessibility_snapshot 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 bazel_ios_accessibility_snapshot 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 bazel_ios_accessibility_snapshot. 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.
bazel_ios_accessibility_snapshot is provided by the XcodeBazel MCP server (xcodebazelmcp/xcodebazelmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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