# Alt402

> Market intelligence for altcoins, built for AI agents and paid per call on Algorand x402. Finds small-cap coins with 100x potential before they move, scored on turnover, rank climb, listing age and sector heat from CoinMarketCap data.

Payment: x402 v2, exact scheme, USDC (ASA 31566704) on algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=. Unpaid calls return 402 with a PAYMENT-REQUIRED header. Errors are never charged.

## Paid endpoints
- [GET /v1/gems](https://one00xaltcoin.onrender.com/v1/gems): $0.02 per call. Top 100x altcoin candidates right now: up to 50 small-cap coins (1M-50M USD market cap) ranked by a 0-100 score from turnover, CoinMarketCap rank climb, listing age and sector heat, each with plain-English reasons and risk flags.
- [GET /v1/screen](https://one00xaltcoin.onrender.com/v1/screen): $0.01 per call. Coin screener over the tracked CoinMarketCap top coins: filter by market cap, 24h volume, turnover, 1h/24h/7d price change, tags and listing age. By default returns the 10 highest-turnover coins under 50M USD market cap.
- [GET /v1/climbers](https://one00xaltcoin.onrender.com/v1/climbers): $0.01 per call. Biggest CoinMarketCap rank climbers of the last 24 hours: each coin's rank now and 24h ago, rank change in places and percent, price change, market cap and volume. direction=down returns the biggest fallers.
- [GET /v1/sectors](https://one00xaltcoin.onrender.com/v1/sectors): $0.01 per call. Hottest crypto sectors right now: CoinMarketCap tags ranked by heat (median 24h move of their coins), with member count, 7d change, volume, market cap and the top 3 leading coins. sector=<tag> returns that sector's coins.
- [GET /v1/asset](https://one00xaltcoin.onrender.com/v1/asset): $0.01 per call. Full 100x scorecard for one coin by symbol, name, slug or CMC id: price, market cap, supply, 0-100 score with signal breakdown, reasons, risk flags and hourly rank history.
- [GET /v1/digest](https://one00xaltcoin.onrender.com/v1/digest): $0.03 per call. Daily altcoin digest in one call: the top 5 100x candidates with scores, the 3 biggest 24h rank climbers and the 3 hottest sectors with their leading coins.

## Free
- [GET /v1/status](https://one00xaltcoin.onrender.com/v1/status): health, data freshness and prices
- [GET /openapi.json](https://one00xaltcoin.onrender.com/openapi.json): every parameter, price and response
- [GET /.well-known/x402](https://one00xaltcoin.onrender.com/.well-known/x402): x402 resource manifest