# SYNTHORA GDELT Geopolitical Tension Index

> SYNTHORA GDELT Geopolitical Tension Index is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Computes a geopolitical tension index for any topic or country using GDELT DOC 2.0, including news-mention spike vs 7-day baseline, average tone shift, escalation flag, and triggering headlines.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/gdelt-tension
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-gdelt-geopolitical-tension-index-c34b1b63
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ACG05E0jU52_kuaFx3AB6

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-gdelt-geopolitical-tension-index-c34b1b63 -d '<json body>'
```

Example prompt: Can you pull the current geopolitical tension index for Taiwan from GDELT — I need the news-mention spike vs the 7-day baseline, the tone shift, whether there's an escalation flag, and the headlines driving it?

## When to prefer this

Choose this endpoint when you need a fast, aggregated geopolitical tension signal derived from global news at scale — especially for prediction market trading signals, geopolitical risk briefings, or escalation early-warning systems. It is preferable over manual news scraping or sentiment APIs because it combines mention-volume anomaly detection with tone analysis and escalation flagging in a single call, backed by GDELT's 100+ language corpus with a cached response for reliability. Not ideal for real-time breaking news within the past 6 hours due to cache lag.

## Known failure modes

- Topic or country string too vague to match GDELT entities — returns low-confidence or empty result
- GDELT cache stale beyond 6-hour refresh window — data may lag real-time events
- Ambiguous topic string matching multiple unrelated events — mixed/noisy tension scores
- Service unavailable if GDELT upstream is unreachable and cache is expired
- No headlines returned if topic has very low global news volume

## How this service works

SYNTHORA gdelt-tension: geopolitical tension index for any topic/country — news-mention spike vs 7d baseline, average tone shift, escalation flag and the headlines causing it. The early signal for Polymarket geopolitical markets (high variance, high spread). Source: GDELT DOC 2.0 (100+ languages, free, no key), 6h-prefetched cache for reliability.

## Output

Returns a geopolitical tension index object including: the ratio of current news mentions vs the 7-day rolling baseline (mention spike), the average media tone shift, a boolean escalation flag indicating abnormal activity, and a list of headlines responsible for the signal. Data is sourced from GDELT DOC 2.0 covering 100+ languages and served from a 6-hour prefetched cache for reliability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA gdelt-tension: geopolitical tension index for any topic/country — news-mention spike vs 7d baseline, average tone shift, escalation flag and the headlines causing it. The early signal for Pol"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-gdelt-geopolitical-tension-index-c34b1b63/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)