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  1. Home
  3. 💰 Finance & Fintech
  5. Blackwall X402 Guardrail
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Health: ActiveRecent health check succeeded.Last checked 8/10/2026, 11:18:52 PM

Blackwall X402 Guardrail

Enrichment pendingWe haven’t run our AI enrichment pass on this listing yet, so the overview, use cases, and FAQ below may be sparse or missing. We work through the catalog over time — check back soon.
View Repository

Pre-signature x402 payment verdict (GO/HOLD/STOP) for AI agents, with a verifiable signed receipt.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to CursorAdd to VS Code
Manual Client & Custom JSON ConfigExpand JSON ▾

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claude_desktop_config.json
{
  "mcpServers": {
    "blackwall-x402-guardrail": {
      "command": "npx",
      "args": [
        "-y",
        "https://blackwalltier.com"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Install Directory Badge Claim listing Alternatives💰 More in Finance & Fintech

Documentation Overview

Blackwall X402 Guardrail is a 💰 Finance & Fintech MCP server listed on AllMCPs. Pre-signature x402 payment verdict (GO/HOLD/STOP) for AI agents, with a verifiable signed receipt.

We couldn’t automatically pull a README for this listing from blackwalltier.com, so the summary above comes from its listing details. To install it, use the one-click buttons or copy the config from the Quick Install section above, then open the source repository for full setup instructions, configuration options, and the tools it exposes over MCP.

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Frequently Asked Questions about Blackwall X402 Guardrail

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "blackwall-x402-guardrail": { "command": "npx", "args": ["-y", "blackwall-x402-guardrail"] } }

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Technical Specs & Signals

Category💰Finance & Fintech
More technical detailsExpand ▾
TransportSSE (Remote)
RuntimeNode.js
5/5 checks healthy over the last 8h
Views0
 Unique ViewsTotal visits recorded for this listing page on AllMCPs.
Installs0
Installs & Copy ActionsTotal times users copied install commands or configuration snippets for this server.
42Quality signal: Fair · 42/100How this signal is calculated ▾
Server availability25/25
Verified ownership0/20
Documentation & tools16/30
Adoption & activity1/15
Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Blackwall X402 Guardrail →Install in Claude DesktopInstall in CursorInstall in VS Code