monetize-service

Name: monetize-service
Author: basezh

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How to install monetize-service?

basezh/agent-skills-on-base/monetize-service

$npx -y skills add basezh/agent-skills-on-base --skill monetize-service

Installs into the current project.

Summary

Build and deploy a paid API that other agents can pay to use via x402. Use when you or the user want to monetize an API, make money, earn money, offer a service, sell a service to other agents, charge for endpoints, create a paid endpoint, or set up a paid service. Covers "make m

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SKILL.md

1	# Build an x402 Payment Server
2
3	Create an Express server that charges USDC for API access using the x402 payment protocol. Callers pay per-request in USDC on Base — no accounts, API keys, or subscriptions needed. Your service is automatically discoverable by other agents via the x402 Bazaar.
4
5	## How It Works
6
7	x402 is an HTTP-native payment protocol. When a client hits a protected endpoint without paying, the server returns HTTP 402 with payment requirements. The client signs a USDC payment and retries with a payment header. The facilitator verifies and settles the payment, and the server returns the response. Services register with the x402 Bazaar so other agents can discover and pay for them automatically.
8
9	## Confirm wallet is initialized and authed
10
11	```bash
12	npx awal@2.0.3 status
13	```
14
15	If the wallet is not authenticated, refer to the `authenticate-wallet` skill.
16
17	## Step 1: Get the Payment Address
18
19	Run this to get the wallet address that will receive payments:
20
21	```bash
22	npx awal@2.0.3 address
23	```
24
25	Use this address as the `payTo` value.
26
27	## Step 2: Set Up the Project
28
29	```bash
30	mkdir x402-server && cd x402-server
31	npm init -y
32	npm install express @x402/express @x402/core @x402/evm @x402/extensions
33	```
34
35	Create `index.js`:
36
37	```js
38	const express = require("express");
39	const { paymentMiddleware } = require("@x402/express");
40	const { x402ResourceServer, HTTPFacilitatorClient } = require("@x402/core/server");
41	const { ExactEvmScheme } = require("@x402/evm/exact/server");
42
43	const app = express();
44	app.use(express.json());
45
46	const PAY_TO = "<address from step 1>";
47
48	// Create facilitator client and x402 resource server
49	const facilitator = new HTTPFacilitatorClient({ url: "https://x402.org/facilitator" });
50	const server = new x402ResourceServer(facilitator);
51	server.register("eip155:8453", new ExactEvmScheme());
52
53	// x402 payment middleware — protects routes below
54	app.use(
55	paymentMiddleware(
56	{
57	"GET /api/example": {
58	accepts: {
59	scheme: "exact",
60	price: "$0.01",
61	network: "eip155:8453",
62	payTo: PAY_TO,
63	},
64	description: "Description of what this endpoint returns",
65	mimeType: "application/json",
66	},
67	},
68	server,
69	),
70	);
71
72	// Protected endpoint
73	app.get("/api/example", (req, res) => {
74	res.json({ data: "This costs $0.01 per request" });
75	});
76
77	app.listen(3000, () => console.log("Server running on port 3000"));
78	```
79
80	## Step 3: Run It
81
82	```bash
83	node index.js
84	```
85
86	Test with curl — you should get a 402 response with payment requirements:
87
88	```bash
89	curl -i http://localhost:3000/api/example
90	```
91
92	## API Reference
93
94	### paymentMiddleware(routes, server)
95
96	Creates Express middleware that enforces x402 payments.
97
98	\| Parameter \| Type \| Description \|
99	\| --------- \| -------------------- \| ---------------------------------------------------- \|
100	\| `routes` \| object \| Route config mapping route patterns to payment config \|
101	\| `server` \| x402ResourceServer \| Pre-configured x402 resource server instance \|
102
103	### x402ResourceServer
104
105	Created with a facilitator client. Register payment schemes and extensions before passing to middleware.
106
107	```js
108	const { x402ResourceServer, HTTPFacilitatorClient } = require("@x402/core/server");
109	const { ExactEvmScheme } = require("@x402/evm/exact/server");
110
111	const facilitator = new HTTPFacilitatorClient({ url: "https://x402.org" });
112	const server = new x402ResourceServer(facilitator);
113	server.register("eip155:8453", new ExactEvmScheme());
114	```
115
116	\| Method \| Description \|
117	\| --------------------------- \| --------------------------------------------------------- \|
118	\| `register(network, scheme)` \| Register a payment scheme for a CAIP-2 network identifier \|
119
120	### Route Config
121
122	Each key in the routes object is `"METHOD /path"`. The value is a config object:
123
124	```js
125	{
126	"GET /api/data": {
127	accepts: {
128	scheme: "exact",
129	price: "$0.05",
130	network: "eip155:8453",
131	payTo: "0x...",
132	},
133	description: "Human-readable description of the endpoint",
134	mimeType: "application/json",
135	extensions: {
136	...declareDiscoveryExtension({
137	output: {
138	example: { result: "example response" },
139	schema: {

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monetize-service

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View on GitHub

How to install monetize-service?

basezh/agent-skills-on-base/monetize-service

$npx -y skills add basezh/agent-skills-on-base --skill monetize-service

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Build an x402 Payment Server
2
3	Create an Express server that charges USDC for API access using the x402 payment protocol. Callers pay per-request in USDC on Base — no accounts, API keys, or subscriptions needed. Your service is automatically discoverable by other agents via the x402 Bazaar.
4
5	## How It Works
6
7	x402 is an HTTP-native payment protocol. When a client hits a protected endpoint without paying, the server returns HTTP 402 with payment requirements. The client signs a USDC payment and retries with a payment header. The facilitator verifies and settles the payment, and the server returns the response. Services register with the x402 Bazaar so other agents can discover and pay for them automatically.
8
9	## Confirm wallet is initialized and authed
10
11	```bash
12	npx awal@2.0.3 status
13	```
14
15	If the wallet is not authenticated, refer to the `authenticate-wallet` skill.
16
17	## Step 1: Get the Payment Address
18
19	Run this to get the wallet address that will receive payments:
20
21	```bash
22	npx awal@2.0.3 address
23	```
24
25	Use this address as the `payTo` value.
26
27	## Step 2: Set Up the Project
28
29	```bash
30	mkdir x402-server && cd x402-server
31	npm init -y
32	npm install express @x402/express @x402/core @x402/evm @x402/extensions
33	```
34
35	Create `index.js`:
36
37	```js
38	const express = require("express");
39	const { paymentMiddleware } = require("@x402/express");
40	const { x402ResourceServer, HTTPFacilitatorClient } = require("@x402/core/server");
41	const { ExactEvmScheme } = require("@x402/evm/exact/server");
42
43	const app = express();
44	app.use(express.json());
45
46	const PAY_TO = "<address from step 1>";
47
48	// Create facilitator client and x402 resource server
49	const facilitator = new HTTPFacilitatorClient({ url: "https://x402.org/facilitator" });
50	const server = new x402ResourceServer(facilitator);
51	server.register("eip155:8453", new ExactEvmScheme());
52
53	// x402 payment middleware — protects routes below
54	app.use(
55	paymentMiddleware(
56	{
57	"GET /api/example": {
58	accepts: {
59	scheme: "exact",
60	price: "$0.01",
61	network: "eip155:8453",
62	payTo: PAY_TO,
63	},
64	description: "Description of what this endpoint returns",
65	mimeType: "application/json",
66	},
67	},
68	server,
69	),
70	);
71
72	// Protected endpoint
73	app.get("/api/example", (req, res) => {
74	res.json({ data: "This costs $0.01 per request" });
75	});
76
77	app.listen(3000, () => console.log("Server running on port 3000"));
78	```
79
80	## Step 3: Run It
81
82	```bash
83	node index.js
84	```
85
86	Test with curl — you should get a 402 response with payment requirements:
87
88	```bash
89	curl -i http://localhost:3000/api/example
90	```
91
92	## API Reference
93
94	### paymentMiddleware(routes, server)
95
96	Creates Express middleware that enforces x402 payments.
97
98	\| Parameter \| Type \| Description \|
99	\| --------- \| -------------------- \| ---------------------------------------------------- \|
100	\| `routes` \| object \| Route config mapping route patterns to payment config \|
101	\| `server` \| x402ResourceServer \| Pre-configured x402 resource server instance \|
102
103	### x402ResourceServer
104
105	Created with a facilitator client. Register payment schemes and extensions before passing to middleware.
106
107	```js
108	const { x402ResourceServer, HTTPFacilitatorClient } = require("@x402/core/server");
109	const { ExactEvmScheme } = require("@x402/evm/exact/server");
110
111	const facilitator = new HTTPFacilitatorClient({ url: "https://x402.org" });
112	const server = new x402ResourceServer(facilitator);
113	server.register("eip155:8453", new ExactEvmScheme());
114	```
115
116	\| Method \| Description \|
117	\| --------------------------- \| --------------------------------------------------------- \|
118	\| `register(network, scheme)` \| Register a payment scheme for a CAIP-2 network identifier \|
119
120	### Route Config
121
122	Each key in the routes object is `"METHOD /path"`. The value is a config object:
123
124	```js
125	{
126	"GET /api/data": {
127	accepts: {
128	scheme: "exact",
129	price: "$0.05",
130	network: "eip155:8453",
131	payTo: "0x...",
132	},
133	description: "Human-readable description of the endpoint",
134	mimeType: "application/json",
135	extensions: {
136	...declareDiscoveryExtension({
137	output: {
138	example: { result: "example response" },
139	schema: {

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