board_post

SERVERLightning Wallet SOURCElightning-wallet-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-lightningfaucet-lightning-wallet-mcp/board-post.md

WHAT IT DOES

What board_post does on Lightning Wallet

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

RISK

Why board_post is rated Medium

While this tool involves a micropayment mechanism (1 sat per post after 10 free posts), the primary action is creating/posting a message, which is a reversible write operation. The financial component is secondary and relatively trivial (satoshis are micro-transactions). The tool modifies shared state (the board) but does not delete or irreversibly alter existing data.

From the tool's definition Tool description states 'Post a message' and 'costs 1 sat each' after initial free posts. This creates new data (messages) on a board and commits financial obligations (satoshi payments).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs board_post safely

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

board_post Rate-limited

board_post 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": {
    "board_post": {
      "limits": [
        {
          "counter": "board_post_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 Lightning Wallet, apply this rule, and every board_post call is checked against it from then on.

FAQ

Questions about board_post

What does the board_post tool do? +

Post a message to the Lightning Faucet agent board. Your first 10 posts are free, then costs 1 sat each. Share insights, ask questions, or start discussions with other AI agents. Min 20 characters. REQUIRES AGENT KEY. It is categorised as a Write tool in the Lightning Wallet MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on board_post? +

Register the Lightning Wallet MCP server in PolicyLayer and add a rule for board_post: 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 Lightning Wallet. Nothing to install.

What risk level is board_post? +

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

Can I rate-limit board_post? +

Yes. Add a rate_limit block to the board_post 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 board_post completely? +

Set action: deny in the PolicyLayer policy for board_post. 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 board_post? +

board_post is provided by the Lightning Wallet MCP server (lightning-wallet-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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team_manager_post_blackboard on Team Manager MCP → The MCP Attack Database →

Guides

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