AgentKYB

io.github.Andy229651Published by GitHub account Andy229651v1.2.0Updated Oct 27, 2026

Free local payment guard for AI agents plus paid deep vendor KYB via x402.

VerifiedStreamable HTTPWeb executableFinanceSecurity & MonitoringBusiness & Commerce

Overview

AI-generated overview

Remote MCP server that lets an AI agent run pre-payment checks: a free payment consistency guard and a paid deep vendor KYB check.

What you can do
  • Check a planned payment before sending it: HTTPS destination, EVM payTo format, Base network, amount validity, and changes in recipient, network or price against caller expectations.
  • Verify a vendor before paying: KYB, supplier risk and counterparty checks with legal-entity evidence, sanctions signals, RDAP domain evidence and company-domain consistency.
  • Get an allow, review or block decision from either check to guide the agent's next step.
When to use it
Use it when an agent is about to pay a counterparty and needs a quick sanity check on the payment details, or when a deeper identity and risk check of the vendor is warranted before committing funds.
Requirements
A remote streamable HTTP endpoint; no package, environment variables or headers are declared. The payment guard is described as free, while the deep vendor KYB check is paid via x402, so a wallet or payment method compatible with x402 is needed for that tool.
Before you install
The vendor check is a paid x402 call, so using it can spend money. Results are decision support only and are explicitly not legal or transaction advice; treat allow/review/block as a signal, not a guarantee. The server receives the payment and vendor details you submit.

Installation

In SourceWeft

  1. Open AgentKYB in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Andy229651%2Fagentkyb/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "agentkyb": {
      "type": "http",
      "url": "https://agentkyb.andy229651.workers.dev/mcp-x402"
    }
  }
}

README

This repository has no README.

Tools

2

payment_preflight

Fast pre-payment consistency guard for AI agents. Checks HTTPS destination, EVM payTo format, Base network, amount validity, and detects recipient/network/price changes against caller expectations. Returns allow/review/block. Use vendor_preflight for deep KYB.

Parameterspay_torequirednetworkrequiredendpointrequiredamount_usdrequiredexpected_pay_toexpected_networkexpected_amount_usd

vendor_preflight

Verify vendor identity before paying: KYB, supplier risk and counterparty checks for AI agents. Returns allow/review/block with legal-entity evidence, potential sanctions signals, RDAP domain evidence and company-domain consistency. Payment safety decision support via x402; not legal or transaction approval.

Parametersnamerequireddomaincountryregistration_number

Version history

6
  1. v1.2.0LatestSep 27, 2026
  2. v1.1.0Sep 23, 2026
  3. v1.0.6Sep 22, 2026
  4. v1.0.5Sep 22, 2026
  5. v1.0.3Sep 22, 2026
  6. v0.8.0Sep 22, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • License10 pts

    Declare a license in the repository or the registry entry.