Echoes back the input message
AI agents call echo to retrieve information from MCP Firebird without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a diagnostic or utility tool that returns user input unchanged. It performs no operations on the database, executes no code, modifies no data, and triggers no external actions. It is purely a read/reflection operation with minimal security risk in any context.
From the tool's definition Tool name is 'echo' and description states it 'Echoes back the input message' — a simple reflection of input with no data access, modification, execution, or side effects.
Attacks that exploit this kind of access
Echoes back the input message. It is categorised as a Read tool in the MCP Firebird MCP Server, which means it retrieves data without modifying state.
Register the MCP Firebird MCP server in PolicyLayer and add a rule for echo: 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 MCP Firebird. Nothing to install.
echo 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 echo 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 echo. 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.
echo is provided by the MCP Firebird MCP server (luancamara/mcpfirebird). 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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