PayGate MCP — Monetization Gateway for AI Agents MCP server

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by geoacpfilho·io.github.geoacpfilho/paygate-monetize-monetization-x402·v0.3.1

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Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.

B84/100grade B

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PayGate MCP — Monetization Gateway for AI Agents tools (6)

write = sends, deletes, buys or posts

get_earningsFree
Report how much the user has earned selling their tools. Use when they ask about sales, revenue, income, how much they made, how many calls were paid, or which tool sells best. Returns paid calls, gross revenue, commission and net revenue, broken down per tool. Requires the api_key from register_server.
get_my_listingFree
Review what the user currently has for sale. Use when they ask what they are selling, what their prices are, where their money goes, or want to check their listing before changing it. Returns the proxy URL, payout destination, commission rate and every listed tool with its price. Requires the api_key from register_server.
list_registered_serversFree
Find a paid tool that does something you cannot do yourself. Use when the user needs a capability you lack and is willing to pay per use, or asks what paid tools, APIs or data sources are available. Returns every tool on the market with its price per call in USD and the endpoint to call it. Browsing is free and needs no key.
register_serverFree
Start charging for an MCP server the user owns. Use when they want to monetize, sell, charge for, get paid for, put a price on, or make money from a server, API or tool. Buyers pay their wallet DIRECTLY on-chain — PayGate never holds the money, so there is no payout to wait for, no balance to withdraw and no commission taken. Their server is never modified and needs no payment code. Tools are imported automatically, so it must be publicly reachable over HTTPS and answer tools/list. Returns a proxy URL and a secret api_key shown only once; save it, every other seller tool needs it.
set_tool_priceFree
Reprice or unlist something the user already sells. Use when they want to raise, lower or change a price, make a tool free, pause selling it, or take it off the market. Requires the api_key from register_server.
verify_ownershipFree
Prove the user owns the server they listed, earning a trusted badge in the marketplace. Use after they have published their verification token at /.well-known/paygate-verify on the server's domain. PayGate fetches that URL and confirms the token matches. Verified sellers can be filtered for by buyers, so this directly increases how often their tools get chosen. Requires the api_key from register_server.

Public scan report

scanner v0.1.10 · 2026-11-03 · same rubric, same numbers if you re-run it

no findings

–Code scanremote-only server, no package to scann/a
Live reliabilityremote reachable in 449ms20/20
Tool poisoning6 tool descriptions checked15/15
Auth qualityopen endpoint, read-only tools10/15
Maintenancelast push 82 days ago12/15
Maintainer identityregistry namespace matches repository owner6/10

Overall 84/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How PayGate MCP — Monetization Gateway for AI Agents compares

Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 84/100; higher than 70% of 4,460 AI and agents servers
Tools: 6; the typical AI and agents server has 6
Tools that change things: 0%; typical: 0%. Fewer write tools means less an agent can break
Uptime: 100%; of our recent checks; the typical remote AI and agents server answers 100%
Response time: 122 ms; faster than 82% of 2,331 AI and agents servers

What its tools let an agent do: 4 read · 1 create · 1 change

Install PayGate MCP — Monetization Gateway for AI Agents in Claude Code, Cursor or VS Code

claude mcp add --transport http paygate-monetize-monetization-x402 https://paygate-mcp.rendercriativo.workers.dev/mcp

Add to Cursor

What the publisher says

From the PayGate MCP — Monetization Gateway for AI Agents repository's README, as published. We do not edit it. Read it on GitHub

PayGate MCP

Monetization gateway for Model Context Protocol servers. Put any MCP server behind a pay-per-call toll that AI agents can settle autonomously — no signup, no API keys, no human in the loop.

Live endpoint: https://paygate-mcp.rendercriativo.workers.dev/mcp

What it does

An agent calls a tool. If the tool is monetized, PayGate answers with an x402 v2 payment challenge instead of the result. The agent signs a USDC transfer authorization, retries, and gets its answer. Settlement happens on Base; the developer never touches payment code.

agent ──tools/call──▶ PayGate ──▶ 402 challenge (price, asset, payTo)
agent ──signed payload──▶ PayGate ──verify──▶ facilitator
                          PayGate ──▶ developer's MCP server ──▶ result
                          PayGate ──settle──▶ facilitator ──▶ USDC on Base
agent ◀── result + settlement receipt

Payment is verified before the tool runs and settled after it returns. If the tool fails or returns an error, nothing is charged.

For agents

Discovery is free. Ask PayGate what is for sale:

curl -X POST https://paygate-mcp.rendercriativo.workers.dev/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call",
       "params":{"name":"list_registered_servers","arguments":{}}}'

Calling a monetized tool without payment returns a spec-compliant challenge — a tool result with isError: true whose structuredContent holds the PaymentRequired object:

{
  "x402Version": 2,
  "error": "Payment required: calculate_fator_r custa $0.02 USDC.",
  "resource": { "url": "mcp://tool/calculate_fator_r", "mimeType": "application/json" },
  "accepts": [{
    "scheme": "exact",
    "network": "eip155:8453",
    "amount": "20000",                                     // 6-decimal USDC units
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "payTo": "0x82e3...999e",
    "maxTimeoutSeconds": 120,
    "extra": { "name": "USD Coin", "version": "2" }        // EIP-712 domain
  }]
}

Sign an EIP-3009 TransferWithAuthorization using exactly the domain in extra, then retry the call with the payment attached under params.meta["x402/payment"]. The settlement receipt comes back in meta["x402/payment-response"].

The USDC EIP-712 domain name is "USD Coin" on Base mainnet and "USDC" on Base Sepolia. Using the wrong one makes every signature fail verification.

A working reference client is in scripts/pay-test.mjs:

PRIVATE_KEY=0x... node scripts/pay-test.mjs

The paying wallet needs USDC on Base — but no ETH: gas is covered by the facilitator.

Both x402 transports are supported. HTTP clients can use the base64 PAYMENT-REQUIRED / PAYMENT-SIGNATURE / PAYMENT-RESPONSE headers instead of the MCP _meta binding.

For sellers

The whole seller lifecycle is exposed as MCP tools, so an agent can run it end to end — tell your assistant to monetize your server and it can do everything below on its own:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

PayGate MCP — Monetization Gateway for AI Agents: common questions

Is PayGate MCP — Monetization Gateway for AI Agents MCP server safe?: Mostly: it is graded B (84/100). Read the PayGate MCP — Monetization Gateway for AI Agents safety report
How do I install PayGate MCP — Monetization Gateway for AI Agents?: It runs remotely at paygate-mcp.rendercriativo.workers.dev. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does PayGate MCP — Monetization Gateway for AI Agents need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is PayGate MCP — Monetization Gateway for AI Agents maintained?: The last commit was 82 days ago (2026-08-14). The latest release is v0.3.1.
Is PayGate MCP — Monetization Gateway for AI Agents up?: 100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of PayGate MCP — Monetization Gateway for AI Agents?: Servers from other publishers that do the same job: Ausca MCP server, Agoragentic Agent OS MCP server and IWE (iwe.md) MCP server.
How does PayGate MCP — Monetization Gateway for AI Agents compare with other AI and agents MCP servers?: safety score 84/100 (higher than 70% of 4,460 AI and agents servers); tools 6 (the typical AI and agents server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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Run it through the gateway

With the gateway added, ask your agent for it by name:

agent prompt

call io.github.geoacpfilho/paygate-monetize-monetization-x402 → get_earnings

Free per call. Metered, capped by your key, logged for reliability.

Add the gateway (gw.mcp.market)

Rating: —
Safety grade: B · 84/100
Stars: 0
Downloads/wk: –
Price: Free
Licence: MIT
Transport: Remote
Uptime: 100% · 28/28 checks
Version: 0.3.1
Category: AI and agents
Last release: 2026-08-14

Endpoint

https://paygate-mcp.rendercriativo.workers.dev/mcp

streamable-http

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