AI agents call appd_list_health_rules to retrieve information from Appd without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves health rule metadata and configurations from AppDynamics without any side effects. It performs informational lookups only, with no ability to create, modify, delete, or execute operations. The read-only nature of the server and the listing/fetching terminology confirm Read category classification.
From the tool's definition Tool description states it 'List health rule summaries' and 'fetch full rule definitions' — purely retrieval operations with no data modification. Server is explicitly described as 'read-only MCP server'.
Attacks that exploit this kind of access
List health rule summaries (id, name, enabled) for an application via the Alerting REST v1 API. Optionally fan out to fetch full rule definitions. It is categorised as a Read tool in the Appd MCP Server, which means it retrieves data without modifying state.
Register the Appd MCP server in PolicyLayer and add a rule for appd_list_health_rules: 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 Appd. Nothing to install.
appd_list_health_rules 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 appd_list_health_rules 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 appd_list_health_rules. 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.
appd_list_health_rules is provided by the Appd MCP server (jagalliers/appd-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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