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Web3 Signals API – Per-Asset Signal
x402
Web3 Signals API – Per-Asset Signal is a paid API for AI agents from web3-signals-api-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-12).
Returns an AI-fused buy/sell/hold signal for a specific crypto asset, combining whale activity, derivatives positioning, technical analysis, narrative momentum, and market data into a scored signal with LLM-generated insights.
Price / call$0.001
Success—
StatusUnknown
How this service works
AI-powered crypto signal intelligence for 20 assets. Fuses whale activity, derivatives positioning, technical analysis, narrative momentum, and market data into scored signals with LLM insights.
Output
A JSON object containing the asset symbol, a signal label (BUY, SELL, or HOLD), a composite score from 0 to 100, directional momentum (delta and direction), per-dimension scores for whale activity and technical analysis, overall market context including regime (e.g. TRENDING) and risk level (e.g. moderate), and optionally LLM-generated textual insights explaining the signal.
Example use cases
Pre-trade signal check for Bitcoin
“Before I make a Bitcoin trade, can you pull the latest signal for BTC and tell me the composite score, whether whales are accumulating, and what the overall market regime looks like?”
Altcoin momentum scan for Solana
“Get me the current signal for SOL — I want to know if momentum is rising or falling, what the narrative score looks like, and whether the signal is bullish or bearish overall.”
Risk-level assessment before ETH position
“I'm thinking about adding to my Ethereum position — can you check the Web3 Signals score for ETH and tell me the risk level and whether derivatives positioning is aligned with a bullish thesis?”
Technical details
Endpoint
GEThttps://web3-signals-api-production.up.railway.app/signal/%7Basset%7DWhen to prefer
Choose this endpoint when you need a multi-dimensional, AI-fused trading signal for a specific crypto asset that goes beyond simple price feeds or single-indicator alerts. It is ideal when you want a single scored verdict (buy/sell/hold) that synthesizes whale on-chain activity, derivatives positioning, technical analysis, and narrative momentum together, rather than querying each data source separately. Prefer this over raw market data APIs when you need an interpretable, LLM-enriched signal ready for agent decision-making or user-facing output.
Side effects
- Unsupported asset symbol returns a 404 or error response — only 20 specific assets are supported
- Stale or unavailable upstream data may reduce signal freshness or return partial dimension scores
- Payment not processed (402) if x402 payment header is missing or insufficient
- Transient 5xx errors from Railway infrastructure during high load
- Rate limiting if requests exceed allowed throughput
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| path_params | string |
Output
Schema · Response
{
"type": "json",
"example": {
"asset": "BTC",
"signal": {
"label": "BUY",
"momentum": {
"delta": 3.2,
"direction": "rising"
},
"direction": "bullish",
"dimensions": {
"whale": {
"label": "bullish",
"score": 78
},
"technical": {
"label": "neutral",
"score": 65
}
},
"composite_score": 72
},
"market_context": {
"regime": "TRENDING",
"risk_level": "moderate"
}
}
}Tags
x402
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