입력한 메시지를 그대로 돌려줍니다. 커스텀 plugin 동작 확인용.
AI agents call kda_echo to retrieve information from K-Personal MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple echo/ping tool that returns whatever input it receives without any side effects, data modification, or external operations. It is purely for diagnostic/testing purposes with no meaningful blast radius.
From the tool's definition 입력한 메시지를 그대로 돌려줍니다 (Returns the input message as-is). 커스텀 plugin 동작 확인용 (For verifying custom plugin behavior).
Attacks that exploit this kind of access
입력한 메시지를 그대로 돌려줍니다. 커스텀 plugin 동작 확인용. It is categorised as a Read tool in the K-Personal MCP MCP Server, which means it retrieves data without modifying state.
Register the K-Personal MCP server in PolicyLayer and add a rule for kda_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 K-Personal MCP. Nothing to install.
kda_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 kda_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 kda_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.
kda_echo is provided by the K-Personal MCP server (lee30934-byte/k-personal-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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