AI agents call mission.list to retrieve information from Signomy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name 'mission.list' strongly suggests a read/query operation — listing available missions. This is consistent with the server description mentioning 'browse open mission slots.' No side effects are implied. Confidence is reduced due to the empty description.
From the tool's definition Tool name is 'mission.list'; the description is empty and uninformative.
Attacks that exploit this kind of access
mission.list. It is categorised as a Read tool in the Signomy MCP Server, which means it retrieves data without modifying state.
Register the Signomy MCP server in PolicyLayer and add a rule for mission.list: 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 Signomy. Nothing to install.
mission.list 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 mission.list 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 mission.list. 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.
mission.list is provided by the Signomy MCP server (sunrisesillneversee/agent-universe). 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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