---
title: "List fields of research"
method: GET
path: "/v1/people/fields"
tags: ["People", "tier:standard"]
---

# List fields of research

`GET /v1/people/fields`

## Request

- Base URL: `https://api.particle.pro`
- URL: `https://api.particle.pro/v1/people/fields`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Lists one level of the ANZSRC 2020 Fields of Research: the divisions, the groups of a division, or the fields of a group. Every code, slug, and title listed here is accepted wherever speaker expertise is filtered by field.

## Query parameters

- `limit` integer: Results per page (default: all)
- `cursor` string: Opaque pagination cursor from previous response
- `parent` string: List the fields one level below this one: the groups of a division, or the fields of a group. Accepts its code (32), slug (biomedical-and-clinical-sciences), or title (Biomedical and Clinical Sciences). Omit to list the divisions.
- `q` string: Search the fields by title instead of listing a level: words match in either number and by prefix, so cardiology finds Cardiology (incl. cardiovascular diseases). With parent, only fields below that one are searched. Best matches first.

## Response `200`

OK

- PageExpertiseCode
  - `cursor` string: Pass to next request for more results
  - `data` ExpertiseCode[], nullable, required: List of results
    - `code` string, required: The standard's own notation, such as 29-1212 (SOC), 2212 (ISCO), or 320101 (FoR).
    - `group` 'minor' | 'broad' | 'alias': Set for a code that stands for several detailed SOC 2018 occupations: a SOC minor group (such as 29-1000 Healthcare Diagnosing or Treating Practitioners), a broad group (such as 29-1210 Physicians), or an alias, an everyday name such as doctors (physicians and surgeons). Every occupation filter accepts one and matches a speaker listed under any of its occupations.
    - `level` integer: Depth in the standard's official hierarchy: SOC major group 1 and detailed occupation 2; FoR division 1, group 2, field 3; ISCO-08 unit group 4 and minor group 3. ISCO-08 codes are the groups SOC maps to, listed flat without the standard's upper levels. Omitted for a SOC group or alias (see group).
    - `parent_code` string: The standard's official parent code; omitted at the top level and for every ISCO-08 code, since ISCO-08 is listed without its upper levels. A SOC broad group's parent is its minor group and a minor group's its major group, but a detailed SOC occupation's official parent is its major group (29-1211 has parent_code 29-0000), so it can differ from parent, which is the browse parent one level up (29-1210).
    - `slug` string, required: The title as a URL segment, such as cardiologists.
    - `standard` 'soc_2018' | 'isco_08' | 'anzsrc_for_2020', required: The standard the code belongs to: soc_2018 (US Standard Occupational Classification), isco_08 (the ILO's International Standard Classification of Occupations), or anzsrc_for_2020 (ANZSRC Fields of Research).
    - `title` string, required: The standard's official title, such as Cardiologists.
  - `has_more` boolean, required: Whether more results exist

## Other responses

- `402`: Payment Required. Read error_code. payment_required is the x402 path: either a keyless request being challenged — pay $0.01 in USDC per request (requirements in the PAYMENT-REQUIRED header) or send a pp_ API key — or a supplied payment that failed settlement (details in the PAYMENT-RESPONSE header; retry the same signature before signing a new one). See https://docs.particle.pro/x402. Any other code means the credential was accepted but does not cover this request (a plan or session gate such as premium_required or paid_plan_confirmation_required); its resolve says how to obtain access, and no payment header is sent.
- `default`: Error

---

[API](https://skmtc.dev/particle/apis/particle-api.md) · [All operations](https://skmtc.dev/particle/apis/particle-api/llms.txt) · [OpenAPI document](https://skmtc.dev/particle/apis/particle-api/revisions/416ba82ab9d7?raw)