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Vouch

notifuturo/vouch

Gives Claude a trust score API before it sends money to a counterparty. Exposes two MCP tools: vouch_score checks a target URL against threat feeds, transport signals, domain heuristics, and crowdsourced reputation data accumulated in D1, returning an explainable risk level. vouch_report lets you flag or vouch for hosts to feed the reputation layer. The scoring engine uses weighted signals with a safety override so a single hard negative can't be averaged away by softer positives. Runs on Cloudflare Workers and charges per call via x402 microtransactions in USDC on Base mainnet. If you're building an agent that autonomously pays merchants or APIs, this is the scam screen you'd call first.

GitHub stars
1
tools
2
transport
HTTP
last updated
May 22, 2026
View on GitHub

Install

From registry metadata
$ npx add-mcp https://vouch.futuronoti.workers.dev/mcp --name vouch

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http vouch https://vouch.futuronoti.workers.dev/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 2 tools

Verified live against the running server on Nov 6, 2026.

vouch_scoreCheck whether a counterparty is SAFE TO PAY before sending money. Given a URL or host, returns a 0-100 trust score and risk band (low/medium/high/critical), detecting scams, phishing, and known-malicious endpoints via threat feeds, domain risk heuristics, and a community reput...1 params

Check whether a counterparty is SAFE TO PAY before sending money. Given a URL or host, returns a 0-100 trust score and risk band (low/medium/high/critical), detecting scams, phishing, and known-malicious endpoints via threat feeds, domain risk heuristics, and a community reput...

Parameters* required
target*string
Counterparty URL or hostname.
vouch_reportReport a host as a scam/bad actor ('flag') or as trustworthy ('vouch'), improving Vouch's community reputation graph for everyone's future payment-trust checks. Free.3 params

Report a host as a scam/bad actor ('flag') or as trustworthy ('vouch'), improving Vouch's community reputation graph for everyone's future payment-trust checks. Free.

Parameters* required
kind*string
one of flag · vouch
reasonstring
target*string

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Readme

Vouch

CI License: MIT x402 Cloudflare Workers Live

A per-call payment trust & reputation API for AI agents — monetized over x402.

When an autonomous agent is about to pay a merchant, API, or counterparty, it asks Vouch one question first: is this safe to pay? Vouch returns an explainable trust score, and charges a fraction of a cent per call in USDC — no accounts, no API keys, no Stripe. Billing is the x402 protocol itself.

Why

View the full README on GitHub

Details

Repository
github.com/notifuturo/vouch
Transport
HTTP
Registry
MCP registry, active
Tools verified
Nov 6, 2026