# BaseBrain AI Crypto Screener (Alt)

> BaseBrain AI Crypto Screener (Alt) is a paid API for AI agents from basebrain-ai.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Screens and filters alternative cryptocurrencies based on criteria to surface actionable trading signals or market data

## Facts

- Endpoint: POST https://basebrain-ai.vercel.app/api/rapid/crypto-screener-alt
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebrain-ai-crypto-screener-alt-e98b4eff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o_wG0oO1-Kx6onDpidsmj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability basebrain-ai-crypto-screener-alt-e98b4eff -d '<json body>'
```

Example prompt: Can you screen the altcoin market for me and pull up a list of alternative cryptocurrencies that are showing strong momentum or notable signals right now?

## When to prefer this

Choose this endpoint when you need to screen or filter alternative cryptocurrencies (altcoins) specifically, rather than Bitcoin or major coins, and want a lightweight pay-per-call API without a subscription. Useful for agents that need on-demand altcoin market data without maintaining persistent API keys.

## Known failure modes

- Empty or malformed input object returns generic example response
- No filtering parameters result in unfiltered or default dataset
- Payment not processed causes 402 error before data is returned
- Upstream market data unavailable causes empty or stale result
- Schema mismatch in input object returns error or null result

## How this service works

Generated by create next app

## Output

Returns a result object containing screened cryptocurrency data — likely including token names, prices, market metrics, and signals matching the applied filter criteria for alternative coins.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebrain-ai-crypto-screener-alt-e98b4eff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from basebrain-ai.vercel.app](https://www.zero.xyz/host/basebrain-ai.vercel.app/llms.txt)