agentmods.dev

x402-bridge

x402-bridge is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from nirholas/three.ws. Its token cost is not measured, scanned A, original, Apache-2.0.

A local bridge for finding and paying x402 endpoints, which are web services that charge for each request. It supports payment limits and requires private keys and other environment settings.

In plain words
What is it for?
Discovering x402 services through Bazaar and making paid requests to allowed web hosts. It can run locally through the listed npm package.
Why use it?
It handles the payment step when an agent uses a paid web endpoint, while allowing per-request and total spending caps.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it.

One of 45 entries in server.json upstream. Installing this one merges just its entry into your config; the other 44 are separate, each on its own page.

not rated 238repo +8 4d ago A scan tokens not measured original Apache-2.0

Good fit Discovering x402 services through Bazaar and making paid requests to allowed web hosts. It can run locally through the listed npm package.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/nirholas/three.ws/x402-bridge
View source ↗ nirholas/three.ws three.ws
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/nirholas/three.ws

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for x402-bridge

README.md
[![agentmods](https://agentmods.dev/badge/mcp/nirholas/three.ws/x402-bridge/github.svg)](https://agentmods.dev/mcp/nirholas/three.ws/x402-bridge)
Your own site
<a href="https://agentmods.dev/mcp/nirholas/three.ws/x402-bridge"><img src="https://agentmods.dev/badge/mcp/nirholas/three.ws/x402-bridge/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for x402-bridge

Your own site · 80×15
<a href="https://agentmods.dev/mcp/nirholas/three.ws/x402-bridge"><img src="https://agentmods.dev/badge/mcp/nirholas/three.ws/x402-bridge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

x402-bridge scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

mcp-bridge/server.json · 24 lines

What it actually says

{
  "x402-bridge": {
    "command": "npx",
    "args": [
      "-y",
      "@three-ws/mcp-bridge"
    ],
    "env": {
      "MCP_BRIDGE_EVM_PRIVATE_KEY": "",
      "MCP_BRIDGE_SVM_PRIVATE_KEY": "",
      "MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC": "100000",
      "MCP_BRIDGE_MAX_TOTAL_ATOMIC": "1000000",
      "MCP_BRIDGE_ALLOWED_PAYTO": "",
      "MCP_BRIDGE_ALLOWED_HOSTS": "",
      "MCP_BRIDGE_ALLOW_HTTP": "0",
      "MCP_BRIDGE_DISCOVER_LIMIT": "20",
      "MCP_BRIDGE_BAZAAR_URL": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
      "MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER": "5",
      "MCP_BRIDGE_MAX_DEPOSIT_ATOMIC": "5000000",
      "X402_MCP_BRIDGE_CHANNELS_DIR": "~/.x402-mcp-bridge/channels",
      "RPC_URL_8453": ""
    }
  }
}
Same file

What else server.json configures

This page is one entry in a file that holds 45. Installing the file brings all of them; each is measured and scanned on its own page.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 24 lines scan A 9bca08eb922f

Subscribe to this mod's changes

x402-bridge is an MCP server published in the GitHub repository nirholas/three.ws (238 stars, last pushed 4d ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Finance and fintechLLMWeb3 and blockchainanimationavatarglTFmcpwebgl
Related

Other mcp servers, from other repositories

base-onchain-wallet-tokens

Read-only on-chain intelligence for AI agents on Base: balances, tokens, gas, tx status. Remote server at base.datakoot.com.

datakoot/base-intel-mcp · not measured

crypto-prices

Live USD crypto spot prices by ticker (BTC, ETH, SOL, …) for AI agents. x402 pay-per-call. Remote server at api.agishub.com.

agishub/agishub-mcp · not measured

firstdollar

An MCP that teaches AI agents to use the wallets they already have. Teacher, not butler. Runs locally from the firstdollar npm package.

lisamaraventano-spine/firstdollar · not measured

docs-langchain

MCP server "docs-langchain", hosted remotely at docs.langchain.com, as configured in langchain-ai/langchain.

langchain-ai/langchain · not measured

component-explorer

MCP server "component-explorer" as configured in microsoft/vscode. Launched with npm exec --no -- component-explorer mcp -p ./test/componentFixtures/component-ex.

microsoft/vscode · not measured

vscode-automation-mcp

MCP server "vscode-automation-mcp" as configured in microsoft/vscode. Launched with npm --prefix test/mcp run start-stdio.

microsoft/vscode · not measured