Use when: you want a quick smoke test that osxphotos is installed and the Photos library can be opened.\n
AI agents call health-check to retrieve information from Apple Photos without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a diagnostic/health verification tool. It checks system state (whether osxphotos is installed and the Photos library is accessible) but does not read, write, delete, execute code, or commit financial actions. The blast radius if misused is minimal—worst case a false positive/negative diagnostic result. Classified as Read rather than Other because it is scoped to a specific query operation (health check).
From the tool's definition Tool description states it performs a 'smoke test that osxphotos is installed and the Photos library can be opened' — a diagnostic check with no data retrieval, modification, or side effects.
Attacks that exploit this kind of access
Use when: you want a quick smoke test that osxphotos is installed and the Photos library can be opened.\n. It is categorised as a Read tool in the Apple Photos MCP Server, which means it retrieves data without modifying state.
Register the Apple Photos MCP server in PolicyLayer and add a rule for health-check: 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 Apple Photos. Nothing to install.
health-check 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 health-check 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 health-check. 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.
health-check is provided by the Apple Photos MCP server (sweetrb/apple-photos-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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