card

Send a rich card message (LINE).

SERVEROpenClaw SOURCEopenclaw

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/openclaw/card.md

WHAT IT DOES

What card does on OpenClaw

AI agents use card to create or update resources in OpenClaw, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OpenClaw environment.

RISK

Why card is rated Medium

This tool creates and sends a message to LINE, which is a write operation that modifies state in an external system (adds a message to a chat/channel). It's not read-only (no side effects), nor does it execute arbitrary code or delete data.

From the tool's definition Send a rich card message (LINE) - the tool writes/sends a message to LINE, creating new content in an external messaging platform.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs card safely

PolicyLayer is an MCP gateway: it sits between your AI agents and OpenClaw, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For card, this is the rule to start with:

card Rate-limited

card 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "card": {
      "limits": [
        {
          "counter": "card_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect OpenClaw, apply this rule, and every card call is checked against it from then on.

FAQ

Questions about card

What does the card tool do? +

Send a rich card message (LINE). It is categorised as a Write tool in the OpenClaw MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on card? +

Register the OpenClaw MCP server in PolicyLayer and add a rule for card: 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 OpenClaw. Nothing to install.

What risk level is card? +

card is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit card? +

Yes. Add a rate_limit block to the card 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.

How do I block card completely? +

Set action: deny in the PolicyLayer policy for card. 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.

What MCP server provides card? +

card is provided by the OpenClaw MCP server (openclaw). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on OpenClaw, and thousands of servers like it.

This server

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Across the catalogue

The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →