Mutate an existing LINE audience group (upload type). Two modes. Only Messaging-API-created (upload) audiences accept add_users. Audiences built in LINE OA Manager UI (chat-tag, friend-path, web-traffic) are read-only here and LINE will reject mutation. Args: - mode (
AI agents use line_update_audience to create or update resources in Line Oa Mcp Ultimate — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Line Oa Mcp Ultimate environment.
This tool creates or modifies data reversibly—it adds users to an audience group. The operation can be undone (users can be removed), and it does not irreversibly delete data or execute arbitrary code. It falls squarely into the Write category.
From the tool's definition Tool description states 'Mutate an existing LINE audience group' and 'add_users', indicating modification of data. The tool modifies audience membership by adding users to an existing audience.
Documented attack patterns abuse exactly the kind of access line_update_audience gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Line Oa Mcp Ultimate, and nothing reaches the server without passing your rules. This is the rule we recommend for line_update_audience:
{
"version": "1",
"default": "deny",
"tools": {
"line_update_audience": {
"limits": [
{
"counter": "line_update_audience_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}line_update_audience 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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Mutate an existing LINE audience group (upload type). Two modes. Only Messaging-API-created (upload) audiences accept add_users. Audiences built in LINE OA Manager UI (chat-tag, friend-path, web-traffic) are read-only here and LINE will reject mutation. Args: - mode (. It is categorised as a Write tool in the Line Oa Mcp Ultimate MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Line Oa Mcp Ultimate MCP server in PolicyLayer and add a rule for line_update_audience: 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 Line Oa Mcp Ultimate. Nothing to install.
line_update_audience 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 line_update_audience 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 line_update_audience. 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.
line_update_audience is provided by the Line Oa Mcp Ultimate MCP server (wasintoh/line-oa-mcp-ultimate). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 34 Line Oa Mcp Ultimate tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
34 Line Oa Mcp Ultimate tools catalogued and risk-classified — across an index of 42,500+ MCP servers.