Pay-per-call agent tools: x402 probe, web fetch, wallet balances, weather. $0.001 USDC/call
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ETH/USD spot price. $0.001 USDC on Base (x402).
This tool takes no arguments.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
Run in a terminal
claude mcp add --transport http x402-tools https://x402-probe.lucciocarmino.workers.dev/mcp
ETH/USD spot price. $0.001 USDC on Base (x402).
No arguments.
{
"type": "object",
"properties": {}
}Fetch a public web page as clean text + title + links. $0.001 USDC on Base (x402).
| Argument | Type | Description |
|---|---|---|
| url* | string |
{
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
}
}
}Decode any x402 endpoint's price, network, asset and payTo without paying it. $0.001 USDC on Base (x402).
| Argument | Type | Description |
|---|---|---|
| url* | string |
{
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
}
}
}USDC + gas balances of an EVM address on Base, Ethereum, Arbitrum, Optimism, Polygon. $0.001 USDC on Base (x402).
| Argument | Type | Description |
|---|---|---|
| address* | string |
{
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string"
}
}
}Current weather + hourly 24h forecast for lat/lon. $0.001 USDC on Base (x402).
| Argument | Type | Description |
|---|---|---|
| lat* | number | |
| lon* | number |
{
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number"
},
"lon": {
"type": "number"
}
}
}Wikipedia summary of a topic. $0.001 USDC on Base (x402).
| Argument | Type | Description |
|---|---|---|
| q* | string |
{
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string"
}
}
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 14, 2026.
No readOnlyHint / destructiveHint annotations, so clients can't tell a read from a write without asking.
Fix: Add annotations to each tool, e.g. { readOnlyHint: true } for tools that only read.