Summary
This is a pay-per-use MCP server that gives Claude access to live crypto prices, weather data, translation, web page analysis, and Google Sheets without managing API keys. Every call costs between $0.001 and $0.02 in USDC on Base, paid via the x402 protocol from a wallet you control with a private key. The navi_x402_scout tool is interesting: it finds the best x402 service for any task based on real usage data. You set a MAX_PRICE_USDC ceiling, and the server signs payment authorizations locally. Reach for this when you want Claude to pull live external data without the usual API key setup, and you're comfortable running a funded Base wallet and paying microtransactions per request.
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MCP server that gives your AI agent paid superpowers with zero API keys: live
crypto prices, weather + air quality, translation, AI market reports, web page
intelligence, Google Sheets reading, URL previews — and navi_x402_scout, which
finds the best x402 service in the ecosystem for any task.
Every call is paid per-request in USDC on Base via the x402 protocol (prices: $0.001–$0.02). No accounts, no API keys, no subscriptions: your agent's wallet pays only for what it uses.
Setup
- Fund a wallet with a few USDC on Base mainnet (a dollar goes a long way).
- Add to your MCP client config (Claude Desktop, Cursor, etc.):
{
"mcpServers": {
"navi-x402": {
"command": "npx",
"args": ["-y", "navi-x402-mcp"],
"env": {
"X402_PRIVATE_KEY": "0x<private key of the paying wallet>",
"MAX_PRICE_USDC": "0.05"
}
}
}
}
Tools
Tools are generated dynamically from the live Navi catalog — new endpoints appear automatically. Current highlights:
| Tool | What it does | Price |
|---|---|---|
navi_x402_scout | Top-3 x402 services for a task, ranked by real 30-day usage | $0.005 |
navi_crypto_prices | Live prices, 7d/30d change, ATH context (CoinGecko) | $0.001 |
navi_market_report | Structured AI crypto market analysis | $0.02 |
navi_weather | Forecast + air quality for any location | $0.001 |
navi_translate | Translation with BCP-47 normalization + formality | $0.005 |
navi_web_intelligence | AI page analysis: summary, entities, sentiment | $0.005 |
navi_page_context | Page structure, link taxonomy, repo metadata | $0.005 |
navi_google_sheets | Read any shared Google Sheet as typed JSON | $0.003 |
navi_url_preview | OpenGraph/Twitter card metadata | $0.001 |
navi_timestamp | Timezone-aware time with DST/week signals | $0.001 |
Safety
MAX_PRICE_USDC(default0.05) hard-caps the per-call price the server will ever authorize.- The private key never leaves your machine: it signs EIP-3009 transfer authorizations locally; settlement happens on-chain via the Coinbase facilitator.
- Without
X402_PRIVATE_KEY, tools are listed and explain how to enable payments instead of failing silently.
Env reference
| Var | Default | Purpose |
|---|---|---|
X402_PRIVATE_KEY | — | Paying wallet (USDC on Base mainnet) |
MAX_PRICE_USDC | 0.05 | Per-call price ceiling |
NAVI_CATALOG_URL | Navi public catalog | Alternative catalog source |
MIT — built by Navi.
Featured
Fastest browser for AI agents to run web automation tasks, always free.
Download Free life-time →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Configuration
X402_PRIVATE_KEY*secretPrivate key of the paying wallet (USDC on Base mainnet). Signs x402 payment authorizations locally.
MAX_PRICE_USDCPer-call price ceiling in USDC (default 0.05).
Categories
Registryactive
Packagenavi-x402-mcp
TransportSTDIO
AuthRequired
UpdatedJun 10, 2026
