AI agents call market.browse 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 'browse' strongly implies a read-only operation to list or view available market entries (e.g., mission slots). No description is provided to contradict this. Confidence is reduced due to the empty description. Severity is low as browsing data typically has minimal blast radius.
From the tool's definition Tool name 'market.browse' suggests browsing/listing market items; description is empty and uninformative.
Attacks that exploit this kind of access
market.browse. 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 market.browse: 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.
market.browse 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 market.browse 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 market.browse. 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.
market.browse 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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