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vet402

v0.5.0

Pay an x402 resource only when the evidence says the seller delivers. Bundles the pay-or-refuse agent skill and the @vet402/mcp-server MCP server (pay_if_trusted holds the signer: on anything other than ALLOW no signature can exist). Evidence can come from vet402's delivery ledger or, with your own key, from The Graph's x402 Base subgraph alone.

Claude Code1 Skill1 MCP serverstdio

By vet402 (KIZUNA Creation)License: MIT0 GitHub starsUpdated 1 hour ago

Directory evidence

Runtimes
Claude Code
Parsed components
2 skill or MCP entries
Source updated
Sep 28, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install vet402 for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install vet402@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/kzmttkc/vet402

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

vet402/
├── .claude-plugin/plugin.json
├── skills/pay-or-refuse/SKILL.md
└── .mcp.json

Included Skills1

pay-or-refuseskills/pay-or-refuse/SKILL.md

Pay an x402 (HTTP 402 Payment Required) resource only when vet402's evidence says the seller delivers, and refuse before any signature exists otherwise. Use when an agent receives a 402 from an API, is about to pay a seller in USDC on Base, or asks "should I pay this?". Covers the MCP tool pay_if_trusted (@vet402/mcp-server), the SDK call payOrRefuse (@vet402/sdk), every refuse reason code and what to do on each, and how to make The Graph's x402 Base subgraph your own evidence source so you do not have to trust vet402's ledger.

MCP servers1

vet402stdio
command
node
args
${CLAUDE_PLUGIN_ROOT}/packages/mcp-server/dist/index.js
env.VOUCH_API_URL
https://vet402.com/api/v1

MCP configuration uses runtime-provided plugin path placeholders such as ${PLUGIN_ROOT} or ${CLAUDE_PLUGIN_ROOT}. Review the manifest for the runtime-specific expansion rules.

Plugin manifests1

.claude-plugin/plugin.json
{
  "name": "vet402",
  "displayName": "vet402 — pay or refuse",
  "version": "0.5.0",
  "description": "Pay an x402 resource only when the evidence says the seller delivers. Bundles the pay-or-refuse agent skill and the @vet402/mcp-server MCP server (pay_if_trusted holds the signer: on anything other than ALLOW no signature can exist). Evidence can come from vet402's delivery ledger or, with your own key, from The Graph's x402 Base subgraph alone.",
  "author": {
    "name": "vet402 (KIZUNA Creation)",
    "url": "https://github.com/kzmttkc"
  },
  "homepage": "https://vet402.com",
  "repository": "https://github.com/kzmttkc/vet402",
  "license": "MIT",
  "keywords": [
    "x402",
    "payments",
    "usdc",
    "base",
    "thegraph",
    "subgraph",
    "mcp",
    "agent-skills",
    "erc-8004"
  ],
  "skills": [
    "./skills/pay-or-refuse"
  ],
  "mcpServers": "./.claude-plugin/mcp.json"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[vet402 on Agent Plugins Marketplace](https://pluginsmp.com/plugins/vet402)