AI agents call research.signal.signal to retrieve information from Rekko MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Although the description is empty, the tool name and context within a research/intelligence server indicate this retrieves or generates trading signals rather than executing trades or modifying data. However, the 'medium' severity reflects the potential for downstream financial harm if an AI agent misuses signals to make large trades without proper validation.
From the tool's definition Tool name 'research.signal.signal' is part of a research and intelligence suite for prediction market analysis. The context indicates it provides 'strategy signals' to support trading decisions.
Attacks that exploit this kind of access
research.signal.signal. It is categorised as a Read tool in the Rekko MCP MCP Server, which means it retrieves data without modifying state.
Register the Rekko MCP server in PolicyLayer and add a rule for research.signal.signal: 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 Rekko MCP. Nothing to install.
research.signal.signal 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 research.signal.signal 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 research.signal.signal. 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.
research.signal.signal is provided by the Rekko MCP server (rekko-ai/rekko-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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