Get what changed in Bitcoin markets since yesterday.
AI agents call signallord_get_what_changed to retrieve information from Signallord without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical market comparison data (what changed since yesterday). It performs a read-only query operation on Bitcoin market metrics, returning informational data with no side effects. No data is created, modified, deleted, or financial transactions are initiated.
From the tool's definition Tool name and description indicate data retrieval: 'Get what changed in Bitcoin markets since yesterday' queries market intelligence data without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
Get what changed in Bitcoin markets since yesterday. It is categorised as a Read tool in the Signallord MCP Server, which means it retrieves data without modifying state.
Register the Signallord MCP server in PolicyLayer and add a rule for signallord_get_what_changed: 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 Signallord. Nothing to install.
signallord_get_what_changed 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 signallord_get_what_changed 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 signallord_get_what_changed. 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.
signallord_get_what_changed is provided by the Signallord MCP server (kk6bzb/signallord-mcp-server). 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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