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SYNTHORA Resolution Oracle
x402
SYNTHORA Resolution Oracle is a paid API for AI agents from resolution-oracle.hergertsynthora.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Returns probabilistic resolution assessments and risk scoring for a given query or question, with Ed25519-signed results, paid per-call via x402 USDC on Base
Price / call$0.25
Success—
StatusUnknown
How this service works
Pay-per-call data and safety intelligence for autonomous agents. Every endpoint is protected by HTTP 402 (x402), settled in USDC on Base mainnet (eip155:8453). No API key, no signup, no KYC: the payment IS the authentication. Responses are Ed25519-signed. Flow: (1) POST the endpoint with no payment header, (2) receive HTTP 402 with an `accepts` array describing price and payTo, (3) re-POST with the `X-PAYMENT` header carrying an EIP-3009 transferWithAuthorization, (4) receive the signed result. This document describes the canonical request/response contract. The full live catalogue of 222 payable resources is published at https://pay.hergertsynthora.com/.well-known/x402.json
Output
A JSON object containing: a boolean ok status, the niche identifier ('resolution_oracle'), a SYNTHORA Ed25519 signature with SHA256 hash for result integrity, a probability object with Yes/No probabilities, a resolution risk assessment with a level (e.g. 'bajo'/'low'), and an echo of the input consulta/query.
Example use cases
Prediction market resolution check
“I'm about to take a position on a prediction market — can you check the resolution probability and risk level for the question 'Will the Fed cut rates before September 2025?'”
Agent decision gate before action
“Before I commit to this bet, tell me the resolution probability and risk for the question 'Will SpaceX complete Starship orbital flight by end of 2025?' — I only want to proceed if risk is low.”
Batch forecasting question triage
“I have a forecasting question: 'Will Bitcoin exceed $120,000 before January 2026?' — get me a signed probability estimate with risk level so I can log it in my tracker.”
Technical details
Endpoint
POSThttps://resolution-oracle.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when an autonomous agent needs a cryptographically signed, pay-per-call probabilistic resolution assessment with no API key or signup required. It is ideal for prediction market platforms, decision-gating workflows, or any agent that needs tamper-evident risk scoring settled on-chain. Prefer it over traditional forecasting APIs when trustless authentication via USDC payment and Ed25519-signed responses are required.
Side effects
- HTTP 402 with no payment header — expected first step, requires re-POST with X-PAYMENT header
- Invalid or expired EIP-3009 authorization — payment rejected, result not returned
- Malformed query/question fields — may return error or empty result
- Insufficient USDC balance on Base mainnet — payment fails
- Endpoint unavailable or service outage — connection error or 5xx response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | |
| question | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "resolution_oracle",
"result": {
"sello": {
"firma": "SYNTHORA",
"sha256": "..."
},
"informe": {
"probabilidades": {
"Yes": 0.5
},
"riesgo_resolucion": {
"nivel": "bajo"
}
},
"consulta": "..."
}
}
}Tags
x402
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