# Registrai

> Hourly data on stablecoin apps on Arc: per-app stablecoin payments, paying wallets and volume, the Arc Builders, Integrations and Ecosystem indices, and verified builders. Computed from public Arc mainnet data; the method and evidence are published.

## Data
- [Stablecoin apps on Arc](https://builder.registrai.cc/apps/): every app with its last 24 h, sorted by payments
- [Arc indices](https://builder.registrai.cc/builders-index/): ABI, AII, AEI, hourly
- [Data API v1](https://builder.registrai.cc/data-api/): public JSON API, no key, CC BY 4.0
- [OpenAPI](https://builder.registrai.cc/api/v1/openapi.json)
- [MCP server](https://builder.registrai.cc/api/mcp): read-only tools over the same data (Streamable HTTP)
- [Paid extras](https://builder.registrai.cc/api/v1/paid): deep history, a day export and watch-feed data, per request via x402 (USDC on Arc)

## Method
- [How we publish](https://builder.registrai.cc/how-we-publish/)

Licence: CC BY 4.0, attribution "Data: Registrai".