---
title: "Cross-schema field overlap"
method: GET
path: "/v1/fields/harmonization"
tags: ["Schemas"]
---

# Cross-schema field overlap

`GET /v1/fields/harmonization`

## Request

- Base URL: `https://api.talonic.com`
- URL: `https://api.talonic.com/v1/fields/harmonization`
- Auth: HTTP bearer

Fields appearing in two or more schemas, grouped by `canonical_name`.
Used to reconcile field definitions across schemas (a field marked
`is_universal: true` appears in every schema).

## Response `200`

Harmonization rows.

- object
  - `data` FieldHarmonizationItem[]
    - `id` string, uuid, required
    - `canonical_name` string, required
    - `display_name` string, nullable
    - `data_type` string, required
    - `tier` integer, required
    - `occurrence_count` integer, required
    - `schema_count` integer, required
    - `document_type_names` string[]
    - `is_universal` boolean, required
    - `links` object, required
      - `self` string

## Other responses

- `401`: Missing or invalid API key.
- `429`: Daily rate limit exceeded.

---

[API](https://skmtc.dev/talonic/apis/talonic-api.md) · [All operations](https://skmtc.dev/talonic/apis/talonic-api/llms.txt) · [OpenAPI document](https://skmtc.dev/talonic/apis/talonic-api/revisions/678fe5f8c9c3?raw)