nanotools
NanoTools — 44 pay-per-call x402 tools for AI agents (Base mainnet): Google Trends, SERP, SEO audits, headless Chromium screenshots/PDF, OG images. $0.001-$0.03 USDC per call, no signup.
Documentation
NanoTools — x402 pay-per-call API for AI agents
**44 tools. No signup. No API keys. Pure x402 micropayments on Base mainnet.**
Agents pay per call with USDC ($0.001–$0.03) via the x402 protocol — the HTTP 402 flow is fully automatic
with any x402-capable client/wallet.
🔗 Discovery endpoints
| What | URL |
|---|---|
| Tool catalog for LLMs | https://nano.stacknodehost.com/llms.txt |
| OpenAPI 3 spec (x402 prices in extensions) | https://nano.stacknodehost.com/openapi.json |
| x402 discovery | https://nano.stacknodehost.com/.well-known/x402 |
| A2A agent card | https://nano.stacknodehost.com/.well-known/agent.json |
| Health | https://nano.stacknodehost.com/health |
🧰 Tool groups
- Trends & SERP — Google Trends (timeline, related queries, regions), Google SERP, Yandex SERP, wordstat regions
- SEO — meta audit, robots.txt audit, readability audit, IndexNow submit
- Chromium tools — page screenshot, page PDF, OG-image generation (real headless Chromium)
- Data — weather (open-meteo), FX rates (ECB), whois (RDAP), RSS parse
- Utilities — QR, JWT, cron parse, hash, uuid, base64, url encode, slug, datetime, ... ($0.001 tier)
💳 Payment
x402 `ExactEvmScheme` on Base (eip155:8453), payTo `0x4F568Bf0cE8537CBE7a0DAF1A43C955e0a648db9`,
facilitator `https://facilitator.openx402.ai`. Prices are declared per-tool in the discovery endpoints
(`x-price-usd` extension in OpenAPI).
🚀 Quick start with any x402 client
Point your agent at any tool URL from `llms.txt` — the first call returns `402` with payment requirements,
the client signs USDC, retries with `X-PAYMENT` header and gets the result.
Frequently asked questions
What is nanotools?
nanotools is NanoTools — 44 pay-per-call x402 tools for AI agents (Base mainnet): Google Trends, SERP, SEO audits, headless Chromium screenshots/PDF, OG images. $0.001-$0.03 USDC per call, no signup.
How do I install nanotools?
Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.
Is nanotools open source?
Yes — it is hosted on GitHub at https://github.com/nanotools-x402/nanotools.
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