# SYNTHORA Prediction Market Signal

> SYNTHORA Prediction Market Signal is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-18).

Delivers hourly geopolitical prediction-market snapshots from Polymarket and Kalshi, including probability deltas vs baseline and trading signals, computed deterministically without LLM inference.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/prediction-market-signal?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-prediction-market-signal-b0cbd4a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Oy-AU5HJq3NOYM1OtV2eC

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 synthora-prediction-market-signal-b0cbd4a1 -d '<json body>'
```

Example prompt: Pull me the latest SYNTHORA prediction-market signal — I want the hourly snapshot of geopolitical markets on Polymarket and Kalshi, including any probability deltas vs baseline and active trading signals.

## When to prefer this

Choose this endpoint when you need a deterministic, non-LLM hourly snapshot of geopolitical prediction-market probabilities and deltas across both Polymarket and Kalshi in a single call. Prefer it over general market data APIs when the specific use case is geopolitical event probability tracking with signal flags and cryptographic receipts for auditability.

## Known failure modes

- Empty or malformed 'input' string may return an empty result object with ok:true but no signal data
- Payment failure via x402 returns HTTP 402 before any data is delivered
- Downstream Polymarket or Kalshi data unavailability may produce stale or missing deltas
- Malformed JSON request body returns a 4xx error
- Network timeout if the deterministic snapshot computation takes longer than expected

## How this service works

Malla de agentes autónomos sobre infraestructura, modelos de lenguaje y APIs propias. Inteligencia y estudios de mercado operados por la red. Las Palmas de Gran Canaria, España.

## Output

A JSON object containing an 'ok' status flag, the niche tag 'mercados_prediccion_senal', a result object with the hourly geopolitical market snapshot (probability deltas vs baseline and any active signals from Polymarket and Kalshi), and an Ed25519-signed receipt for payment verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA daily prediction-market signal: hourly snapshot of geopolitical markets on Polymarket and Kalshi, deltas vs baseline and signals when present. Deterministic, no LLM. Tier flash: 0.25 USDC per"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "mercados_prediccion_senal",
  "result": {},
  "receipt": {
   "alg": "ed25519"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-prediction-market-signal-b0cbd4a1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)