# Crypto Asset Price Signal — Direction & Confidence

> Crypto Asset Price Signal — Direction & Confidence 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 2026-10-21).

Returns a short-term price direction signal (UP/DOWN) with confidence score, predicted percentage move, and staleness indicator for a given crypto asset.

## Facts

- Endpoint: POST https://2x-3090.tailf80b7a.ts.net/x402/signals/sol?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-asset-price-signal-direction-confidence-4fe5ffaf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4Y-k6ua9dkhI7reCeJM7G

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-direction-confidence-4fe5ffaf -d '<json body>'
```

Example prompt: What's the current price direction signal for BTC — is it predicted to go UP or DOWN, and how confident is the model? Give me the predicted percentage move and let me know if the signal is stale.

## When to prefer this

Use this endpoint when you need a lightweight, low-cost ($0.01 USDC) directional trading signal for a specific crypto asset, especially when you want a confidence-scored UP/DOWN forecast with a predicted percentage move. Prefer this over on-chain analytics or full market data APIs when a fast, pre-computed signal is sufficient for decision-making.

## Known failure modes

- Unknown or unsupported asset symbol returns an error or empty response
- Stale signal (stale: true) indicates data may be outdated and should not be acted upon without fresh fetch
- Missing or malformed properties field may cause a 400 bad request
- Network latency on Tailscale private endpoint may cause timeouts for external callers
- Low confidence scores (near 0.5) indicate near-random prediction quality

## How this service works

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## Output

Returns a JSON object with the asset symbol (e.g. 'BTC'), a directional signal ('UP' or 'DOWN'), a confidence score between 0 and 1 (e.g. 0.62), a predicted percentage price move (e.g. 1.4%), the age of the signal in seconds, and a boolean indicating whether the signal is stale.

## Example request

```json
{
 "properties": "SOL"
}
```

## 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-direction-confidence-4fe5ffaf/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)