Create a LINE Rich Menu in one call: validate → create → upload image → set as default. Collapses what is normally 4 LINE API calls into one tool, including the api-data.line.me domain switch for image upload (the #1 cause of failed implementations). This V1 supports single-panel rich menus. The
AI agents use line_build_rich_menu 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 a new Rich Menu and sets it as default for the LINE Official Account. It performs write operations (creating a resource, uploading an image, setting a default configuration) but does not irreversibly destroy data. Misuse could affect all users seeing the wrong menu, giving it medium severity.
From the tool's definition Create a LINE Rich Menu in one call: validate → create → upload image → set as default
Documented attack patterns abuse exactly the kind of access line_build_rich_menu 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_build_rich_menu:
{
"version": "1",
"default": "deny",
"tools": {
"line_build_rich_menu": {
"limits": [
{
"counter": "line_build_rich_menu_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}line_build_rich_menu 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.
Free to start. No card required.
Create a LINE Rich Menu in one call: validate → create → upload image → set as default. Collapses what is normally 4 LINE API calls into one tool, including the api-data.line.me domain switch for image upload (the #1 cause of failed implementations). This V1 supports single-panel rich menus. The. 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_build_rich_menu: 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_build_rich_menu 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_build_rich_menu 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_build_rich_menu. 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_build_rich_menu 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.