---
title: "Chain Validation"
method: POST
path: "/api/v1/cross/sferics-audio/chain-validation"
tags: ["SfericsAudio"]
---

# Chain Validation

`POST /api/v1/cross/sferics-audio/chain-validation`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/cross/sferics-audio/chain-validation`
- Auth: none declared

Cross-check lightning_cross_coupling chain confidence.

Compares observed strike rate against optional CAPE + Schumann
mode-1 amplitude inputs.  High CAPE with no strikes flags an
atmospheric_electrification over-fire; Schumann mode-1
amplitude vs strike rate scores the Williams 2009 pumping
relationship.

## Query parameters

- `x_api_key` string, nullable

## Request body

- ChainValidationRequest
  - `lat` number, required
  - `lon` number, required
  - `radius_km` number
  - `cape_proxy` number, nullable: Open-Meteo CAPE proxy (J/kg) at the receiver
  - `schumann_mode1_amp_pT` number, nullable: Local Schumann mode-1 amplitude (pT)

## Response `200`

Successful Response

- object

## 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)