BLACK_WALL — Pre-action risk gate for AI agents MCP Server

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关于 BLACK_WALL — Pre-action risk gate for AI agents MCP Server

A single `forecast` tool your agent calls before any irreversible action (send money, run SQL, delete data, post content). Returns a risk score (0–100), a reversibility class, named red flags from 28 failure modes, and a gate: proceed / confirm / human-required.

#ai-safety #guardrails #ai-agents #risk #security

BLACK_WALL — Pre-action risk gate for AI agents MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "blackwall": {
      "command": "npx",
      "args": [
        "-y",
        "blackwall-mcp"
      ],
      "env": {
        "BLACKWALL_API_KEY": "bw_live_your_key_here"
      }
    }
  }
}

BLACK_WALL — Pre-action risk gate for AI agents MCP Server 工具

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概览

What is BLACK_WALL?

BLACK_WALL is a pre-action risk gate for AI agents. It exposes a single tool, forecast, that the agent calls before any irreversible action such as sending an email, making a payment, running SQL, deleting data, or posting content.

How to use BLACK_WALL?

Configure BLACK_WALL in your MCP-compatible client (Claude Desktop, Claude Code, Cursor, or Windsurf) by adding a JSON block with the npx command and your API key. The agent then invokes the forecast tool before each potentially irreversible action; a normal email clears in one call, while a dangerous action returns a hard gate verdict.

Key features of BLACK_WALL

Single forecast tool for pre-action risk assessment
Risk score from 0–100 and reversibility class with rollback cost
Gate verdict of proceed, confirm, or human-required
28 documented failure modes with named red flags (e.g. SQL_NO_WHERE, PROMPT_INJECTION_LIKELY)
Hard gate that the agent cannot override
Verdict in approximately 4–8 seconds

Use cases of BLACK_WALL

Prevent accidental email sends to large recipient lists
Stop SQL commands that lack a WHERE clause from executing
Block payment or fund transfer actions that cross environments
Intercept content posts that contain likely prompt injection attempts
Require human approval for irreversible data deletion actions

常见问题

What does BLACK_WALL do exactly?

BLACK_WALL acts as a brake for AI agents. The agent calls the `forecast` tool before any irreversible action, and the server returns a risk score, reversibility class, gate verdict, and named red flags — preventing the agent from talking itself into a bad action.

How do I install BLACK_WALL?

Add a JSON block to your MCP client configuration with command `npx -y blackwall-mcp` and environment variable `BLACKWALL_API_KEY` set to your API key.

Where do I get an API key?

Get a free API key at https://blackwalltier.com. The free tier includes approximately 100 forecasts per month and requires no credit card.

How fast is a verdict?

A typical verdict takes approximately 4–8 seconds.

Can the agent override a STOP verdict?

No. The verdict is a hard gate — the agent cannot talk itself into the bad action, because the gate is enforced by the tool's return value.

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