# BTC Price Signal — Direction & Confidence

> BTC 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 real-time directional price signal for Bitcoin (BTC), including predicted movement direction, confidence score, predicted percentage change, and signal freshness.

## Facts

- Endpoint: POST https://2x-3090.tailf80b7a.ts.net/x402/signals/btc?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/btc-price-signal-direction-confidence-84de5c50
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FjIy0dITCQuZ33oVJaEIh

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 btc-price-signal-direction-confidence-84de5c50 -d '<json body>'
```

Example prompt: What's the current BTC signal — is it trending up or down, and how confident are you? Give me the predicted percentage move and tell me if the signal is fresh.

## When to prefer this

Use this endpoint when you need a real-time, low-cost ($0.01 USDC) directional signal for Bitcoin with a quantified confidence score and predicted move percentage. Prefer this over generic price feeds when you need actionable trading direction rather than just spot price. Best suited for agents that need to make or inform trading/allocation decisions based on short-term BTC momentum.

## Known failure modes

- Stale signal returned (stale: true) if the underlying model has not refreshed recently
- Low confidence score (e.g. <0.5) indicating uncertain market conditions
- Invalid or unsupported asset symbol returns an error
- Service unavailable if the Tailscale node is unreachable
- Payment failure if USDC is not sent correctly via x402 protocol

## How this service works

Master AI on your own hardware. 3 guides covering local AI models, Claude Code, and cost-saving setups. 150+ pages, PDF + DOCX instant download.

## Output

Returns a JSON object with: asset (e.g. 'BTC'), direction ('UP' or 'DOWN'), a confidence score between 0 and 1, a predicted percentage change, the age of the signal in seconds, and a boolean stale 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/btc-price-signal-direction-confidence-84de5c50/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)