Coupon CRUD on a LINE OA (POST /v2/bot/coupon). Four modes: - create: Make a new coupon. Maps friendly inputs to LINE
AI agents use line_manage_coupon 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.
The tool performs create/update/delete operations on coupons through a LINE Official Account, which modifies reversible business data. While coupons could affect financial promotions, the core capability is data modification (CRUD), not direct money movement.
From the tool's definition Tool description explicitly states 'Coupon CRUD' and 'create: Make a new coupon' via POST endpoint. CRUD operations are write-capable. Coupons represent financial or promotional assets.
Documented attack patterns abuse exactly the kind of access line_manage_coupon 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_manage_coupon:
{
"version": "1",
"default": "deny",
"tools": {
"line_manage_coupon": {
"limits": [
{
"counter": "line_manage_coupon_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}line_manage_coupon 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.
Coupon CRUD on a LINE OA (POST /v2/bot/coupon). Four modes: - create: Make a new coupon. Maps friendly inputs to LINE. 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_manage_coupon: 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_manage_coupon 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_manage_coupon 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_manage_coupon. 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_manage_coupon 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.