Check Ember
AI agents call ember_get_mood to retrieve information from Agent Runtime without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The verb 'get' combined with 'mood' (a state attribute) suggests this is a data retrieval operation with no side effects. While the description is sparse, the naming convention strongly implies read-only status checking. This aligns with the 'Read' category for retrieving or querying data. Severity is low because checking mood/status poses minimal risk even if misused by an agent.
From the tool's definition Tool name 'ember_get_mood' with description 'Check Ember' indicates a query or status-check operation that retrieves state information about an entity called 'Ember' without modifying anything.
Attacks that exploit this kind of access
Check Ember. It is categorised as a Read tool in the Agent Runtime MCP Server, which means it retrieves data without modifying state.
Register the Agent Runtime MCP server in PolicyLayer and add a rule for ember_get_mood: 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 Agent Runtime. Nothing to install.
ember_get_mood 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 ember_get_mood 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 ember_get_mood. 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.
ember_get_mood is provided by the Agent Runtime MCP server (marc-shade/agent-runtime-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
ember_get_mood is one line of Agent Runtime's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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