x402 Universal Payer
Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.
MCP server · by nirholas
About
x402 Universal Payer is an MCP server published by nirholas. Marketplaces we read that list it: 1 (Official MCP Registry). The last change we recorded was on 2026-10-12. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs on your machine
- Secrets: 2
- Settings: 13
Requires: MCP_BRIDGE_EVM_PRIVATE_KEY (secret), MCP_BRIDGE_SVM_PRIVATE_KEY (secret)
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm @three-ws/mcp-bridge (@three-ws/mcp-bridge on npm)
- npm downloads/week: 40 (2026-10-12)
- npm downloads/month: 167 (2026-10-12)
- Latest version on npm: 1.0.2, published 2026-08-19
- Declared version 1.0.2 is not listed on npm
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --env "MCP_BRIDGE_EVM_PRIVATE_KEY=<YOUR_MCP_BRIDGE_EVM_PRIVATE_KEY>" --env "MCP_BRIDGE_SVM_PRIVATE_KEY=<YOUR_MCP_BRIDGE_SVM_PRIVATE_KEY>" --transport stdio x402-bridge -- npx -y @three-ws/mcp-bridge[mcp_servers.x402-bridge]
command = "npx"
args = ["-y", "@three-ws/mcp-bridge"]
[mcp_servers.x402-bridge.env]
MCP_BRIDGE_EVM_PRIVATE_KEY = "<YOUR_MCP_BRIDGE_EVM_PRIVATE_KEY>"
MCP_BRIDGE_SVM_PRIVATE_KEY = "<YOUR_MCP_BRIDGE_SVM_PRIVATE_KEY>"{
"mcpServers": {
"x402-bridge": {
"command": "npx",
"args": [
"-y",
"@three-ws/mcp-bridge"
],
"env": {
"MCP_BRIDGE_EVM_PRIVATE_KEY": "<YOUR_MCP_BRIDGE_EVM_PRIVATE_KEY>",
"MCP_BRIDGE_SVM_PRIVATE_KEY": "<YOUR_MCP_BRIDGE_SVM_PRIVATE_KEY>"
}
}
}
}Replace the values in angle brackets with your own. We show the names of the settings, never values.
Optional settings it also lists: MCP_BRIDGE_ALLOWED_HOSTS, MCP_BRIDGE_ALLOWED_PAYTO, MCP_BRIDGE_ALLOW_HTTP, MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER, MCP_BRIDGE_BAZAAR_URL, MCP_BRIDGE_DISCOVER_LIMIT, MCP_BRIDGE_MAX_DEPOSIT_ATOMIC, MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC, MCP_BRIDGE_MAX_TOTAL_ATOMIC, RPC_URL_8453, X402_MCP_BRIDGE_CHANNELS_DIR.
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.2 | Downloads/month (npm): 167 Downloads/week (npm): 40 Forks (GitHub): 63 Stars (GitHub): 233 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
x402-mcp io.github.kwizzlesurp10-ctrl/x402-mcp
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
-
Verify signed x402 payments; treasury-scoped settlement is irreversible.
-
mcp-x402-accept io.github.CryptoAPIs-io/mcp-x402-accept
Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server
-
MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.
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buyforme-mcp io.github.stevemilton/buyforme-mcp
BuyForMe: pay any x402 URL (USD or EUR) with ArisPay delegated custody. Alias of payagent-mcp.
-
nano-pay com.feeless402/nano-pay
Pay for x402-priced APIs with feeless, sub-second Nano (XNO) micropayments from a local wallet.
-
payagent-mcp io.github.stevemilton/payagent-mcp
Pay x402 APIs in USDC on Base, Solana, and BNB Chain with spend mandates, receipts, idempotency.
-
pulsefeed-x402 io.github.Nikolife2016/pulsefeed-x402
Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
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mcp-server io.github.gatefareio/mcp-server
Marketplace of paid HTTP APIs. USDC micropayments via x402 on Base. Non-custodial.
-
agent-x402-paywall-mcp io.github.CSOAI-ORG/agent-x402-paywall-mcp
Agent x402 Paywall MCP — Coinbase HTTP 402 protocol + on-chain settlement. Agents pay per-call
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