# Crypto Asset Price Signal

> Crypto Asset Price Signal is a paid API for AI agents from 2x-3090.tailf80b7a.ts.net, paid per call via x402, $0.01/call, status down (last checked 2026-10-18).

Returns a short-term directional price signal (UP/DOWN) with confidence score and predicted move percentage for a given crypto asset

## Facts

- Endpoint: POST https://2x-3090.tailf80b7a.ts.net/x402/signals/eth?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-asset-price-signal-83b584d2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ce2k0W_HXjV6D73MIxnor

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 crypto-asset-price-signal-83b584d2 -d '<json body>'
```

Example prompt: What's the current directional signal for BTC — is it predicted to go up or down, and how confident is the model? I want to know the predicted move percentage and whether the signal is still fresh.

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.01 USDC) machine-generated directional signal for a crypto asset including confidence and predicted move size. Prefer this over broader market data APIs when you specifically want a computed UP/DOWN forecast rather than raw price data. Best suited for agents making short-term trading decisions or filtering assets by predicted momentum.

## Known failure modes

- Unknown or unsupported asset symbol returns an error or empty result
- Stale signal returned when data is older than acceptable threshold (stale: true)
- Payment not accepted due to insufficient USDC balance or x402 protocol mismatch
- Malformed input schema causes 400-level error
- Service unavailable if the Tailscale-hosted node is offline

## How this service works

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## Output

Returns a JSON object with the asset ticker (e.g. BTC), a directional label (UP or DOWN), a confidence score between 0 and 1, a predicted percentage change, the signal age in seconds, and a boolean staleness flag indicating whether the signal is outdated.

## Example request

```json
{
 "properties": "local AI models setup guide"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asset": "BTC",
  "stale": false,
  "direction": "UP",
  "confidence": 0.62,
  "age_seconds": 120,
  "predicted_pct": 1.4
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-asset-price-signal-83b584d2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2x-3090.tailf80b7a.ts.net](https://www.zero.xyz/host/2x-3090.tailf80b7a.ts.net/llms.txt)