---
title: "Search the location registry"
method: GET
path: "/api/v1/entities"
---

# Search the location registry

`GET /api/v1/entities`

## Request

- Base URL: `https://offnadir-delta.com`
- URL: `https://offnadir-delta.com/api/v1/entities`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

1 token. Finds civil airports, military bases and airfields, naval bases, launch sites, nuclear facilities, ports, power and energy plants, dams, bridges, government sites, maritime chokepoints and named seas by name in many languages (e.g. 羽田空港 / Haneda / HND), ranked exact → prefix → partial and then by prominence. Returns at most 50 rows and has NO pagination — this is a lookup for anchoring other calls, not a data export (the registry is derived from OpenStreetMap under ODbL and Wikidata under CC0, and is not redistributed in bulk). Each row carries its `attribution`, which must be shown wherever the name is, and `match` — `exact`, `prefix` or `partial`; a partial match only contains the text inside a longer name and is not confirmed to be the place asked for.

## Query parameters

- `q` string, required
- `subtypes` string
- `limit` integer

## Response `200`

Matching registry entries with coordinates and attribution.

- object
  - `entities` object[]
  - `limit` number

## Other responses

- `401`: Error response with a stable machine-readable code.
- `403`: Error response with a stable machine-readable code.
- `429`: Error response with a stable machine-readable code.

---

[API](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api.md) · [All operations](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api/llms.txt) · [OpenAPI document](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api/revisions/5cf3f2bed5a2?raw)