NAVER WORKS 메시지를 전송합니다 (봇이 사용자 또는 채널에 발송). Service Account 인증 사용 (nworks_setup에서 serviceAccount, botId 설정 + 환경변수 NWORKS_PRIVATE_KEY_PATH 필요. User OAuth 불필요)
AI agents use nworks_message_send to create or update resources in Nworks — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nworks environment.
This tool creates and transmits messages, which is a reversible write operation. It modifies the state of the NAVER WORKS messaging system by adding new messages. While not destructive or financial, the high severity reflects the potential blast radius: an AI agent could send unauthorized, sensitive, or misleading messages to many users or channels, causing communication disruption, information leakage, or…
From the tool's definition Tool name contains 'send' and description states '메시지를 전송합니다' (sends messages). It enables the bot to dispatch messages to users or channels ('봇이 사용자 또는 채널에 발송').
Documented attack patterns abuse exactly the kind of access nworks_message_send gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nworks, and nothing reaches the server without passing your rules. This is the rule we recommend for nworks_message_send:
{
"version": "1",
"default": "deny",
"tools": {
"nworks_message_send": {
"limits": [
{
"counter": "nworks_message_send_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}nworks_message_send stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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NAVER WORKS 메시지를 전송합니다 (봇이 사용자 또는 채널에 발송). Service Account 인증 사용 (nworks_setup에서 serviceAccount, botId 설정 + 환경변수 NWORKS_PRIVATE_KEY_PATH 필요. User OAuth 불필요). It is categorised as a Write tool in the Nworks MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Nworks MCP server in PolicyLayer and add a rule for nworks_message_send: 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 Nworks. Nothing to install.
nworks_message_send is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the nworks_message_send 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 nworks_message_send. 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.
nworks_message_send is provided by the Nworks MCP server (yjcho9317/nworks). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nworks, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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26 Nworks tools catalogued and risk-classified — across an index of 43,000+ MCP servers.