---
title: "Grace Stress"
method: POST
path: "/api/v1/grace/stress"
tags: ["GRACE-FO Water Loading"]
---

# Grace Stress

`POST /api/v1/grace/stress`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/grace/stress`
- Auth: none declared

Compute Coulomb stress change from GRACE-FO water loading.

Returns vertical load, flexural stress, Coulomb stress change,
and fault promotion assessment at the requested depth.

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

## Request body

- GRACEStressRequest: Request body for water-loading Coulomb stress computation.
  - `lat` number: Latitude (WGS-84)
  - `lon` number: Longitude (WGS-84)
  - `depth_km` number: Seismogenic depth (km)
  - `fault_dip_deg` number: Fault dip angle (degrees)
  - `use_demo` boolean: Use demo data (True) or attempt real GRACE fetch (False)

## 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)