nsgoods · x402 services
nsgoods is a suite of four x402 pay-per-call APIs for autonomous AI agents, all on Base mainnet in USDC. Every service returns ECDSA-signed responses backed by a public hash-chain proof, and each has a free preview — no accounts, no API keys. This page is the front door; each service lives on its own subdomain.
01 Services
| Service | What it does | Price | Category | Status |
|---|---|---|---|---|
| Kraken Crypto Signals | Signed BUY/SELL/HOLD trading signals + confidence for Kraken pairs. | $0.01 | Markets | ● live |
| Agent Trust Oracle | ERC-8004 agent reputation / trust scores (0-100) for agent-to-agent decisions. | $0.005 | Agent infra | ● live |
| CMC Regime Skill | Deterministic market regime (TREND_UP/DOWN/CHOP/RISK_OFF) + strategy spec. | $0.01 | Markets | ● live |
| Extractability Oracle | GEO extractability score (0-100) for any web page: can AI crawlers quote it? | $0.01 | Web / GEO | ● live |
Machine-readable discovery: /.well-known/x402 · /llms.txt · live status: /health
02 Frequently asked questions
What is nsgoods?
nsgoods is a small suite of x402 pay-per-call APIs built for AI agents: trading signals, ERC-8004 agent trust scores, deterministic market-regime detection, and web extractability scoring. Each is signed, verifiable via a public hash chain, and offers a free preview.
How do agents pay?
Every service uses the x402 protocol on Base mainnet, settled in USDC. An agent calls a paid endpoint, receives an HTTP 402 Payment Required with the price and instructions, submits a signed USDC payment, and retries — no account or API key. This hub does not take payments; each service is paid at its own endpoint.
Are the responses verifiable?
Yes. Every paid response carries an ECDSA signature you can recover, and each service appends its results to a public, tamper-evident sha256 hash chain, so an agent can confirm nothing was rewritten after the fact.