# `io.github.Senpi-Station/x402-web-extract` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.Senpi-Station/x402-web-extract
- JSON: https://anlyon.dev/api/v1/servers/io.github.Senpi-Station/x402-web-extract
- Version: 1.0.1 (active)
- Publisher: io.github.Senpi-Station (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/Senpi-Station/x402-mcp-web-extract
- Metadata from the official MCP Registry, synced 2026-10-21T18:21:15.922Z

Title and description, as the publisher wrote them:

```untrusted-server-text
x402 Web Extract
Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.
```

Scanned 2026-10-21T19:04:53.291Z over streamable-http.

**5 tools: 1 change things and 4 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 4 | allow |

## Findings

No check matched anything in these tool definitions.


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `token_price`

- Nothing in its name or description says what it does, so it is counted as a write.

Description, as the server wrote it:

```untrusted-server-text
Real-time USDC-denominated spot price for an EVM token by contract address or common symbol. Provide address (0x...) or symbol (ETH, USDC, USDT, WETH) and optional chain (base, ethereum, polygon, arbitrum, optimism, avalanche, default base). Costs 0.01 USDC on Base.
```

## Only reads (4)

Looks things up and changes nothing. Claude Code: allow.

### `fetch_url`

- The name "fetch_url" says "fetch": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Fetch any public URL and return a clean, readable markdown or JSON extract for AI agents. Pass the target as url (http/https). Costs 0.01 USDC on Base.
```

### `wallet_balance`

- The description's first verb is "query": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Query the native and USDC balance for any EVM wallet address. Provide address (0x...) and optional chain (base, ethereum, polygon, arbitrum, optimism, default base). Costs 0.02 USDC on Base.
```

### `youtube_audio`

- The description's first verb is "resolve": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Resolve any YouTube video URL to its audio-only stream download URL (m4a/webm when available) with title, uploader, and format metadata. Provide url (http/https). Costs 0.50 USDC on Base.
```

### `youtube_video`

- The description's first verb is "resolve": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Resolve any YouTube video URL (watch?v=, youtu.be, shorts, embed) to a direct MP4 download URL with title, uploader, and format metadata. Provide url (http/https). Costs 1.00 USDC on Base.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `x402-web-extract`:

```json
{
  "permissions": {
    "allow": [
      "mcp__x402-web-extract__fetch_url",
      "mcp__x402-web-extract__wallet_balance",
      "mcp__x402-web-extract__youtube_video",
      "mcp__x402-web-extract__youtube_audio"
    ],
    "ask": [
      "mcp__x402-web-extract__token_price"
    ],
    "deny": []
  }
}
```