--- description: Accept Machine Payments Protocol (MPP) payments from an origin, Cloudflare Worker route, or Model Context Protocol (MCP) tool. title: Accept payments with MPP image: https://developers.cloudflare.com/agents/tools/payments/mpp/accept-payments/og.png?v=c8d7691096adf0d2 --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/agents/llms.txt > Use this file to discover all available pages before exploring further. # Accept payments with MPP Last updated Aug 5, 2026|Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/agents/tools/payments/mpp/accept-payments/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/) Use Cloudflare Workers to accept Machine Payments Protocol (MPP) payments. Choose an integration based on the service you want to protect: - [`mpp-proxy` ↗︎](https://github.com/cloudflare/mpp-proxy) — Charge for HTTP content without changing your origin code. Refer to [Charge for HTTP content](https://developers.cloudflare.com/agents/tools/payments/mpp-charge-for-http-content/). - **Worker route** — Add `mppx` payment middleware to a Worker application. - **MCP tool** — Require payment before an MCP tool returns its result. ## Prerequisites Create a [Cloudflare account](https://developers.cloudflare.com/fundamentals/account/create-account/). You also need a payment recipient and an MPP secret key. The examples use a stablecoin payment method on testnet. For other methods, refer to [MPP payment methods ↗︎](https://mpp.dev/payment-methods/). ## Charge for a Worker route Add `mppx` middleware when you control the Worker application: 1. Install Hono and `mppx` in the Worker project:npmyarnpnpmbun ``` npm i hono mppx ``` ``` yarn add hono mppx ``` ``` pnpm add hono mppx ``` ``` bun add hono mppx ``` 2. Store the MPP signing key as a [Worker secret](https://developers.cloudflare.com/workers/configuration/secrets/):npmyarnpnpm ``` npx wrangler secret put MPP_SECRET_KEY ``` ``` yarn wrangler secret put MPP_SECRET_KEY ``` ``` pnpm wrangler secret put MPP_SECRET_KEY ``` 3. Add the payment middleware before the paid route handler: *src/index.jsjs* ```js import { env } from "cloudflare:workers"; import { Hono } from "hono"; import { Mppx, tempo } from "mppx/hono"; const workerEnv = env; const app = new Hono(); const mppx = Mppx.create({ methods: [tempo.charge({ testnet: true })], secretKey: workerEnv.MPP_SECRET_KEY, }); app.get( "/premium", mppx.charge({ amount: "0.01", currency: "0x20c0000000000000000000000000000000000000", description: "Premium API access", recipient: "", }), (c) => c.json({ access: "paid" }), ); export default app; ``` *src/index.tsts* ```ts import { env } from "cloudflare:workers"; import { Hono } from "hono"; import { Mppx, tempo } from "mppx/hono"; const workerEnv = env as Env & { MPP_SECRET_KEY: string }; const app = new Hono(); const mppx = Mppx.create({ methods: [tempo.charge({ testnet: true })], secretKey: workerEnv.MPP_SECRET_KEY, }); app.get( "/premium", mppx.charge({ amount: "0.01", currency: "0x20c0000000000000000000000000000000000000", description: "Premium API access", recipient: "", }), (c) => c.json({ access: "paid" }), ); export default app; ``` 4. Deploy the Worker:npmyarnpnpm ``` npx wrangler deploy ``` ``` yarn wrangler deploy ``` ``` pnpm wrangler deploy ``` 5. Request the paid route without a payment: ```sh curl -i https://.workers.dev/premium ``` The Worker returns `402 Payment Required` and a `WWW-Authenticate: Payment` header. A paid retry reaches the handler and returns a `Payment-Receipt` header. ## Charge for an MCP tool Add the MPP transport to an [`McpAgent`](https://developers.cloudflare.com/agents/model-context-protocol/apis/agent-api/): 1. Install the required packages in an Agents project:npmyarnpnpmbun ``` npm i agents mppx @modelcontextprotocol/sdk zod ``` ``` yarn add agents mppx @modelcontextprotocol/sdk zod ``` ``` pnpm add agents mppx @modelcontextprotocol/sdk zod ``` ``` bun add agents mppx @modelcontextprotocol/sdk zod ``` 2. Bind the `McpAgent` Durable Object in the Wrangler configuration: ```jsonc { "$schema": "./node_modules/wrangler/config-schema.json", "name": "mpp-server", "main": "src/index.ts", // Set this to today's date "compatibility_date": "2026-10-05", "compatibility_flags": [ "nodejs_compat" ], "durable_objects": { "bindings": [ { "name": "MCP_OBJECT", "class_name": "PaidMCP" } ] }, "migrations": [ { "tag": "v1", "new_sqlite_classes": [ "PaidMCP" ] } ] } ``` ```toml name = "mpp-server" main = "src/index.ts" # Set this to today's date compatibility_date = "2026-10-05" compatibility_flags = ["nodejs_compat"] [[durable_objects.bindings]] name = "MCP_OBJECT" class_name = "PaidMCP" [[migrations]] tag = "v1" new_sqlite_classes = ["PaidMCP"] ``` 3. Store `MPP_SECRET_KEY` as a Worker secret:npmyarnpnpm ``` npx wrangler secret put MPP_SECRET_KEY ``` ``` yarn wrangler secret put MPP_SECRET_KEY ``` ``` pnpm wrangler secret put MPP_SECRET_KEY ``` 4. Check payment before returning the tool result: *src/index.jsjs* ```js import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { McpAgent } from "agents/mcp"; import { Mppx, tempo, Transport } from "mppx/server"; import { z } from "zod"; export class PaidMCP extends McpAgent { server = new McpServer({ name: "paid-search", version: "1.0.0" }); async init() { const mppx = Mppx.create({ methods: [tempo.charge({ testnet: true })], secretKey: this.env.MPP_SECRET_KEY, transport: Transport.mcpSdk(), }); this.server.tool( "premium_search", "Search premium content", { query: z.string() }, async ({ query }, extra) => { const payment = await mppx.charge({ amount: "0.01", currency: "0x20c0000000000000000000000000000000000000", description: "Premium search", recipient: "", })(extra); if (payment.status === 402) throw payment.challenge; return payment.withReceipt({ content: [{ type: "text", text: `Results for: ${query}` }], }); }, ); } } export default PaidMCP.serve("/mcp"); ``` *src/index.tsts* ```ts import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { McpAgent } from "agents/mcp"; import { Mppx, tempo, Transport } from "mppx/server"; import { z } from "zod"; type PaymentEnv = Env & { MPP_SECRET_KEY: string }; export class PaidMCP extends McpAgent { server = new McpServer({ name: "paid-search", version: "1.0.0" }); async init() { const mppx = Mppx.create({ methods: [tempo.charge({ testnet: true })], secretKey: this.env.MPP_SECRET_KEY, transport: Transport.mcpSdk(), }); this.server.tool( "premium_search", "Search premium content", { query: z.string() }, async ({ query }, extra) => { const payment = await mppx.charge({ amount: "0.01", currency: "0x20c0000000000000000000000000000000000000", description: "Premium search", recipient: "", })(extra); if (payment.status === 402) throw payment.challenge; return payment.withReceipt({ content: [{ type: "text", text: `Results for: ${query}` }], }); }, ); } } export default PaidMCP.serve("/mcp"); ``` 5. Deploy the Worker:npmyarnpnpm ``` npx wrangler deploy ``` ``` yarn wrangler deploy ``` ``` pnpm wrangler deploy ``` An unpaid `premium_search` call returns an MPP Challenge. A paid retry returns the tool result and an MPP Receipt in `_meta`. To test both payment flows from a Cloudflare Agent, refer to [Pay from the Agents SDK](https://developers.cloudflare.com/agents/tools/payments/mpp/pay-from-agents-sdk/). For production billing patterns, refer to [MPP payment intents ↗︎](https://mpp.dev/intents/). Was this helpful? 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