# CostPulse — Cross-Region AWS Price Parity Engine
> Find the cheapest AWS region for any service. $0.01/query via x402 or API key.

## Endpoints
- GET /v1/cheapest?service={service}&instance={sku} — Cheapest region for a service
- GET /v1/compare?service={service}&regions={csv} — Compare specific regions
- GET /v1/workload?services={service:sku,service:sku} — Optimal region for a stack
- GET /v1/savings?service={service}&instance={sku}&from={region} — Savings calculator
- GET /v1/badge/{service} — Free SVG badge

## Services Supported
ec2, lambda, rds, s3, dynamodb, cloudfront, sqs, sns, kinesis, elasticache, opensearch, fargate, sagemaker, glue, athena, redshift, eks, ecs, apigateway, bedrock

## Payment
- x402: USDC on Base (eip155:8453) or Solana — $0.01/query, no signup
- API Key: Authorization: Bearer cp_live_... — purchase at https://costpulse.waltsoft.net
- Free: 10 queries/day from landing page

## Example
GET https://costpulse.waltsoft.net/v1/cheapest?service=bedrock&sku=Nova2.0Pro-text-input-tokens-cross-region-global