---
title: "Old Faithful Predict"
method: POST
path: "/api/v1/geyser/old-faithful/predict"
tags: ["Old Faithful Geyser Prediction"]
---

# Old Faithful Predict

`POST /api/v1/geyser/old-faithful/predict`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/geyser/old-faithful/predict`
- Auth: none declared

Predict next Old Faithful eruption -- auth required.

Uses bimodal duration-interval regression with time-of-day correction,
interval trend analysis, and hysteresis detection. Target accuracy:
+/- 5 minutes (vs NPS +/- 10 minutes).

**Pricing:** Included in subscription tiers (legacy list price: GET /api/v1/billing/pricing).

## Query parameters

- `x_api_key` string, nullable

## Request body

- PredictRequest: Request body for eruption prediction.
  - `n_history` integer: Number of recent eruptions to use for prediction (5-50)

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)