# Driftpost — Chainlink Momentum Signal

> Driftpost — Chainlink Momentum Signal is a paid API for AI agents from oraclepost.higgsfield.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-17).

Returns a simple price momentum signal (up/down/flat) for a trading pair by comparing the current Chainlink oracle price on Base to the price 24 oracle rounds earlier, including percent change.

## Facts

- Endpoint: GET https://oraclepost.higgsfield.app/api/premium/signal
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/driftpost-chainlink-momentum-signal-d7bb3a83
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1Lq2JKk5ccHNKGU7qDqsw

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 driftpost-chainlink-momentum-signal-d7bb3a83
```

Example prompt: What's the current momentum signal for ETH-USD — is it up, down, or flat based on the last 24 Chainlink oracle rounds on Base?

## When to prefer this

Choose this endpoint when you need a transparent, on-chain momentum signal with no black-box modeling — purely derived from Chainlink oracle rounds on Base. Ideal for agents that need a simple directional label (up/down/flat) and percent change for crypto pairs without relying on centralized exchange APIs or proprietary signal providers. Best for ETH-USD or BTC-USD pairs available on Chainlink Base feeds.

## Known failure modes

- Unsupported pair symbol returns an error or empty result
- Chainlink oracle unavailable or lagging causes stale data
- Base network congestion may delay oracle round data
- Missing or malformed 'pair' query parameter may return default ETH-USD or error
- Payment failure (x402) blocks access if USDC balance is insufficient

## How this service works

A simple, fully disclosed momentum signal from Chainlink on Base: current price versus the price 24 oracle rounds earlier, percent change, and a label (up / down / flat, threshold 0.5%). Pass ?pair=ETH-USD (default). The method is the whole product: no model, no secret sauce. Not financial advice.

## Output

Returns the current price and the price from 24 oracle rounds earlier for the requested pair, the percent change between them, and a human-readable momentum label: 'up', 'down', or 'flat' (using a 0.5% threshold). All data is sourced directly from the Chainlink oracle contract on Base with no proprietary modeling.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "pair"
     ],
     "properties": {
      "pair": {
       "type": "string",
       "description": "Pair, e.g. ETH-USD or BTC-USD"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/driftpost-chainlink-momentum-signal-d7bb3a83/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from oraclepost.higgsfield.app](https://www.zero.xyz/host/oraclepost.higgsfield.app/llms.txt)