Server data from the Official MCP Registry
Paid agent tools, zero API keys: crypto, weather, translation, web intel, x402 discovery (USDC/Base)
About
Paid agent tools, zero API keys: crypto, weather, translation, web intel, x402 discovery (USDC/Base)
Security Report
This MCP server implements a pay-per-call API gateway using the x402 protocol with USDC on Base. The code is well-structured with proper authentication (private key requirement), appropriate input validation, and clear price enforcement. The private key is handled securely (env var only, never logged), and the server gracefully degrades when unconfigured. Minor quality improvements around error handling and input sanitization are recommended, but no critical vulnerabilities were identified. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
4 files analyzed · 9 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: X402_PRIVATE_KEY
Environment variable: MAX_PRICE_USDC
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-mobileappbyharis-navi-x402-mcp": {
"env": {
"MAX_PRICE_USDC": "your-max-price-usdc-here",
"X402_PRIVATE_KEY": "your-x402-private-key-here"
},
"args": [
"-y",
"navi-x402-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
navi-x402-mcp
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.
Reviews
No reviews yet
Be the first to review this server!
More Developer Tools MCP Servers
Git
Freeby Modelcontextprotocol · Developer Tools
Read, search, and manipulate Git repositories programmatically
Fetch
Freeby Modelcontextprotocol · Developer Tools
Web content fetching and conversion for efficient LLM usage
Toleno
Freeby Toleno · Developer Tools
Toleno Network MCP Server — Manage your Toleno mining account with Claude AI using natural language.
mcp-creator-python
Freeby mcp-marketplace · Developer Tools
Create, build, and publish Python MCP servers to PyPI — conversationally.
MCP Marketplace
Freeby mcp-marketplace · Developer Tools
Search and install MCP servers from inside your AI client.
MarkItDown
Freeby Microsoft · Content & Media
Convert files (PDF, Word, Excel, images, audio) to Markdown for LLM consumption