---
title: "Heartmath Coherence"
method: POST
path: "/api/v1/cross/heartmath-schumann/coherence"
tags: ["HeartMath Schumann Resonance"]
---

# Heartmath Coherence

`POST /api/v1/cross/heartmath-schumann/coherence`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/cross/heartmath-schumann/coherence`
- Auth: none declared

Compute global coherence index across GCMS sites.

Measures how in-phase the Schumann resonance measurements are
across the global HeartMath network. High coherence suggests
global-scale ionospheric forcing.

Parameters
----------
hours : int
    Hours of data to analyze (default 24).
sites : list of str, optional
    Subset of sites to include. If omitted, uses all 6 sites.

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

## Query parameters

- `x_api_key` string, nullable

## Request body

- BodyHeartmathCoherenceApiV1CrossHeartmathSchumannCoherencePost
  - `hours` integer
  - `sites` string[], nullable

## 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)