---
title: "List market segments"
method: GET
path: "/market-sizing"
tags: ["Market"]
---

# List market segments

`GET /market-sizing`

## Request

- Base URL: `https://spacenexus.us/api/v1`
- URL: `https://spacenexus.us/api/v1/market-sizing`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

Retrieve the space economy market segments SpaceNexus tracks. Filter to one segment by id.

## Query parameters

- `segment` string

## Response `200`

Successful response

- object
  - `success` boolean
  - `data` object

## Other responses

- `401`: Invalid or missing API key
- `403`: Professional plan required: a free key gets SUBSCRIPTION_REQUIRED
- `429`: Rate limit exceeded
- `500`: Internal server error

---

[API](https://skmtc.dev/spacenexus/apis/spacenexus-public-api.md) · [All operations](https://skmtc.dev/spacenexus/apis/spacenexus-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/spacenexus/apis/spacenexus-public-api/revisions/f328229f89af?raw)