# SYNTHORA Chokepoint Transits

> SYNTHORA Chokepoint Transits is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Returns daily vessel transit counts through 28 global maritime chokepoints with 7-day moving averages, 30-day baseline deviations, per-vessel-type breakdowns, and anomaly flags sourced from IMF PortWatch satellite AIS data.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/chokepoint-transits
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-chokepoint-transits-52d2fab3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yibLWkfV-j3OVKGoNt1QJ

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-chokepoint-transits-52d2fab3 -d '<json body>'
```

Example prompt: Pull the latest daily vessel transit data for the Strait of Hormuz — I want the 7-day moving average, how it compares to the 30-day baseline, the tanker-only breakdown, and whether there's an anomaly flag triggered.

## When to prefer this

Choose this endpoint when you need canonical, satellite-verified vessel transit data for global maritime chokepoints that directly matches the resolution methodology used by Polymarket chokepoint prediction markets. It is ideal for traders needing tradeable signals (especially tanker-only breakdowns at Hormuz), supply-chain analysts monitoring shipping disruptions, and automated agents that need anomaly detection baked in rather than computing it themselves. Prefer this over generic AIS providers when IMF PortWatch provenance and Polymarket compatibility are required.

## Known failure modes

- Chokepoint name not recognized — returns error if an invalid or unsupported chokepoint identifier is provided
- Data lag — satellite AIS settlement may be delayed by 24-48 hours, so the most recent day may not yet be available
- Payment failure — x402 micropayment not completed results in 402 response with no data
- Malformed input string — free-text input field parsed incorrectly if chokepoint name is ambiguous or misspelled
- Baseline unavailable — 30-day deviation cannot be computed if fewer than 30 days of data exist for a newly tracked chokepoint

## How this service works

SYNTHORA chokepoint-transits: daily vessel transits through the 28 global maritime chokepoints (Hormuz, Suez, Panama, Bab el-Mandeb, Malacca...). Latest settled day, 7d moving average, deviation vs 30d baseline, per-vessel-type breakdown (a tanker-only drop at Hormuz is the tradeable signal) and anomaly flag. Source: IMF PortWatch (satellite AIS) — the canonical resolution source of Polymarket chokepoint markets. Free, no key.

## Output

Returns for the specified chokepoint(s): the latest settled day's transit count, 7-day moving average, deviation versus the 30-day baseline, a per-vessel-type breakdown (tankers, bulk carriers, container ships, etc.), and a boolean anomaly flag indicating statistically significant deviations. Data is sourced from IMF PortWatch satellite AIS feeds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA chokepoint-transits: daily vessel transits through the 28 global maritime chokepoints (Hormuz, Suez, Panama, Bab el-Mandeb, Malacca...). Latest settled day, 7d moving average, deviation vs 30"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-chokepoint-transits-52d2fab3/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)