# List project types

Operation ID: `projectTypes`

Group: PSA › Project Types

[Open in the interactive reference](https://docs.api.lensing.ai/lensing/v1/endpoints/projectTypes)

`GET /psa/project-types`

Read-only: Reads and returns; changes nothing.

Lists project types. Project types can't be filtered by name, and no other endpoint finds a project type by name.

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `Api-Version` | header | string · v1 | yes | The API version this request targets, named by its public identifier. Required on every request; omitting it, or naming a version this company does not have, is answered with 400. This document describes version `v1`. |

## Query surface

- `id` — filter by eq, ne, gt, gte, lt, lte, in, notIn, between, like
- `lastModifiedDate` — filter by eq, ne, gt, gte, lt, lte, in, notIn, between
- Orderable: id, name, lastModifiedDate
- Selectable: id, name, lastModifiedDate
- `page[size]` — Page size
- `page[cursor]` — Opaque continuation cursor

## Response

`200` Success

Under `data`, an array of projectTypesRow:

| Field | Type | Required | Filter | Sort | Description |
| --- | --- | --- | --- | --- | --- |
| `id` | string | no | Exact (`eq`, `ne`), Range (`gt`, `gte`, `lt`, `lte`, `between`), Any of (`in`, `notIn`), Pattern (`like`) | yes | The unique identifier for the project type. Example: `"3b7d5e9c-1a24-4f80-9c6d-2e8f70b13a45"`. |
| `name` | string | no | no | yes | The display name of the project type. Example: `"Retainer"`. |
| `lastModifiedDate` | date-time \| null | no | Exact (`eq`, `ne`), Range (`gt`, `gte`, `lt`, `lte`, `between`), Any of (`in`, `notIn`) | yes | The date and time the project type record last changed, in UTC. Format YYYY-MM-DDTHH:mm:ss.sssZ. Example: `"2026-05-12T09:30:00.000Z"`. |

```json
{
  "data": [
    {
      "id": "3b7d5e9c-1a24-4f80-9c6d-2e8f70b13a45",
      "name": "Retainer",
      "lastModifiedDate": "2026-05-12T09:30:00.000Z"
    }
  ],
  "pagination": {
    "hasMore": true,
    "nextCursor": "<nextCursor>"
  }
}
```

## Statuses

- `400` — Invalid request or business failure
- `401` — The request carries no valid access token.
- `403` — Not authorized
- `404` — Not found
- `429` — Too many requests from this client address. The response has no body and no `Retry-After` header.
- `500` — Internal server error