Cross-Asset Intelligence API#

AI-powered cross-market financial analysis. Crypto + traditional finance in one API.

What This Skill Does#

Connects your agent to 22 paid analysis endpoints spanning 6 domains:

1. BTC-Equity Correlation — Pearson correlation between BTC and stock indices
2. Cross-Market Risk Score — Composite 0-100 score from BTC volatility, VIX, bonds, macro
3. Crypto News Impact — Top 3 market-moving stories ranked by impact
4. Macro Environment — Fed rate, CPI, unemployment, GDP, yields with AI analysis
5. Token Safety — SAFE/CAUTION/DANGER verdict for any ERC-20 contract
6. Daily Briefing — All-in-one cross-asset market snapshot

Payment#

All endpoints use x402 micropayments (USDC on Base). Your agent's wallet pays automatically per request. No API key, no subscription, no signup.

TierPrice RangeAI ModelSpeedquick$0.001-0.002None (pure math)<500msinsight$0.03-0.06Claude Haiku<5sanalysis$0.08-0.20Claude Sonnet<10spro$0.80-1.00Claude Opuscached 2h

Setup#

Your agent needs a funded wallet (USDC on Base). Set your wallet's private key as an environment variable:

• Variable name: WALLET_SIGNING_KEY
• Format: hex (32-byte private key)
• Recommended: Use a dedicated agent wallet with limited funds — not your main wallet

Store the value in .env (gitignored) or a secret manager. Never share or commit it.

Usage#

All endpoints are accessible via HTTP GET through Bankr x402 Cloud:

text

Base URL: https://x402.bankr.bot/0x98ee945dfa6bb8e9ed9f9b6ae56eb82bcc82f0aa/

Quick examples#

bash

# BTC vs S&P500 correlation (30 days)
GET /correlation-quick?index=sp500&period_days=30

# Cross-market risk score
GET /risk-score-quick

# Token safety check
GET /token-safety-quick?chain=ethereum&address=0x...

# Daily market briefing
GET /daily-briefing-quick

# With AI analysis (Claude Sonnet)
GET /correlation-analysis?index=nasdaq&period_days=90&lang=ja

Available endpoints#

Correlation: correlation-quick, correlation-insight, correlation-analysis, correlation-pro

• Params: index (sp500/nasdaq/nikkei225/dax), period_days (7/14/30/90), lang (en/ja)

Risk Score: risk-score-quick, risk-score-insight, risk-score-analysis, risk-score-pro

• Params: lang (en/ja)

Top News: top-news-insight, top-news-analysis, top-news-pro

• Params: lang (en/ja)

Macro Report: macro-report-insight, macro-report-analysis, macro-report-pro

• Params: lang (en/ja)

Token Safety: token-safety-quick, token-safety-insight, token-safety-analysis, token-safety-pro

• Params: chain (ethereum/base/etc), address (contract address), lang (en/ja)

Daily Briefing: daily-briefing-quick, daily-briefing-insight, daily-briefing-analysis, daily-briefing-pro

• Params: lang (en/ja)

Response Format#

All responses include:

• Core analysis data (correlation coefficients, risk scores, news items, etc.)
• upgrade_available — links to higher-tier analysis with pricing
• meta.data_sources — transparency on where data comes from
• meta.data_freshness — timestamp of underlying data
• disclaimer — not financial advice

Why This Over Raw Data APIs#

• Cross-asset analysis — BTC vs stock indices, not just crypto or just stocks
• AI judgment included — not raw numbers, but interpreted analysis
• 4 pricing tiers — from $0.001 machine-readable data to $0.80 institutional reports
• x402 native — no API key dance, just pay and get data
• Bilingual — English and Japanese output

Differentiators#

• Only x402 API offering crypto × traditional finance cross-asset AI analysis
• Historical data analysis capabilities expanding
• Claude Opus institutional-grade reports at pro tier
• Sub-second quick tier for automated monitoring and alerts

Security & Privacy#

This skill contains no executable code. It is a pure markdown description of an external API. All data processing happens server-side on secured infrastructure. No local files are read, written, or executed.