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SYNTHORA Crypto Pulse
x402
SYNTHORA Crypto Pulse is a paid API for AI agents from crypto-pulse.hergertsynthora.com, paid per call via x402, $0.32/call, status unknown (last checked 2026-09-14).
Aggregates four crypto market signals (Fear & Greed, BTC 24h change, perpetual funding rate, total market cap) into a single [-1,1] composite score with conflicting-signal detection and Ed25519 signature.
Price / call$0.32
Success—
StatusUnknown
How this service works
Composite crypto market pulse: aggregates 4 measured signals (Fear & Greed, BTC 24h change, perp funding, total market cap) into a single score in [-1,1] with explicit CONFLICTING-signal detection. Ed25519-signed. Pay 0.03 USDC via x402 on Base.
Output
A JSON object containing: a composite score in the range [-1,1] representing overall crypto market sentiment, individual values for each of the four input signals (Fear & Greed index, BTC 24h price change, perpetual funding rate, total market cap contribution), a boolean or flag indicating conflicting-signal detection, a timestamp, and an Ed25519 cryptographic signature (JCS-lite-sortkeys canonical form) with public key for verifying response authenticity and provenance.
Example use cases
Pre-trade crypto sentiment check
“Before I place my BTC position, what's the current composite crypto market pulse score from SYNTHORA — I want the single [-1,1] number combining fear and greed, BTC price change, funding rates, and market cap, and tell me if the signals are contradicting each other.”
Automated trading bot signal input
“Fetch me the latest SYNTHORA Crypto Pulse score right now — I need the aggregated [-1,1] market score along with the individual readings for Fear & Greed, BTC 24h change, perp funding, and market cap, and whether the signals are conflicting.”
Daily crypto market briefing
“For my morning market briefing, pull the SYNTHORA Crypto Pulse and tell me whether the market is leaning bullish or bearish based on the combined score, which of the four signals are driving it, and if any are sending conflicting signals.”
Technical details
Endpoint
POSThttps://crypto-pulse.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need a single, verifiable, multi-signal composite crypto market sentiment score rather than querying individual data sources separately. It is particularly valuable when you want cryptographic proof of the data's authenticity (Ed25519 signature), when you need explicit detection of contradictory market signals, or when you want a normalized [-1,1] score that blends Fear & Greed, BTC price momentum, derivatives funding sentiment, and macro market cap data in one call. Prefer this over raw exchange APIs or single-signal sentiment tools when signal conflict detection matters.
Side effects
- Payment authorization failure if x402 USDC payment on Base is not properly included — returns payment-required error
- External data feed unavailability causing one or more of the four signals to be missing or stale
- Signature verification failure if the Ed25519 signature cannot be validated against the provided public key
- Network timeout if upstream crypto data sources are slow to respond
- Invalid or malformed POST body returning a 400-level error
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "chain-state-consensus",
"result": {
"rpcs": [
{
"rpc": "publicnode",
"altura": 48979782,
"retrasado": false,
"latencia_ms": 210.9,
"retraso_bloques": 0,
"desviacion_bloques": 0
},
{
"rpc": "1rpc",
"altura": 48979651,
"retrasado": true,
"latencia_ms": 232.4,
"retraso_bloques": 131,
"retraso_seg_aprox": 262,
"desviacion_bloques": -131
}
],
"cadena": "base",
"chain_id": 8453,
"firma_pop": {
"alg": "ed25519",
"sig": "014d5e0f...eb07",
"canon": "jcs-lite-sortkeys",
"pubkey": "1383ab71b92d91b8d62decf5018ee5296933e128256825d0e6e436b42e66b272",
"firmado": {
"ts": "2026-07-22T19:35:13Z",
"payload_hash": "906afc37c8b0f603...",
"altura_consenso": 48979782
}
},
"medido_en": "2026-07-22T19:35:12Z",
"veredicto": "RPC_RETRASADO",
"explicacion": "Los hashes coinciden (misma cadena, sin fork), pero 1 RPC van por detras del consenso mas de 15 bloques: 1rpc (-131 bloques, ~262s).",
"rpcs_caidos": [],
"auditoria_hash": [
{
"altura": 48979651,
"discrepantes": [],
"divergencia_hash": false,
"hash_mayoritario": "0xffe7509dbfdbb59e685d60ae2d05fc31db34513f6dc6a5feb521f6f3c8415206",
"rpcs_que_entregaron_bloque": 6
}
],
"altura_consenso": 48979782,
"metodo_consenso": "mediana_baja_de_alturas (robusta a 1 RPC mentiroso)",
"rpcs_retrasados": [
"1rpc"
],
"divergencia_hash": false,
"rpcs_consultados": 6,
"dispersion_bloques": 131,
"rpcs_que_respondieron": 6,
"umbral_retraso_bloques": 15
},
"provenance": {
"source": "SYNTHORA chain-state-consensus",
"keyless": true
}
}
}Tags
x402
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