# Get one activity-property definition by id

`GET /v1/activity-properties/{id}`

- Authentication: required (Bearer token)
- Required scope: `api.activities.view`

Returns one promoted activity-property definition by id, or `404 not_found`
when the id is not an activity property in this org.

## Path parameters

- `id` (string<uuid>, required) — Resource UUID. An unparseable id reads as a clean `404 not_found`.

## Example request

```bash
curl 'https://api.sendops.dev/v1/activity-properties/00000000-0000-0000-0000-000000000000' \
  -H "Authorization: Bearer $SENDOPS_API_KEY"
```

## Responses

### 200 — The activity-property definition

Content type: `application/json`

```json
{
  "id": "00000000-0000-0000-0000-000000000000",
  "activity_name": "string",
  "property_name": "string",
  "type": "string",
  "enum_values": [
    "string"
  ],
  "description": "string",
  "origin": "managed",
  "source_path": "string",
  "last_synced_at": "2026-05-17T20:00:00Z",
  "created_at": "2026-05-17T20:00:00Z",
  "updated_at": "2026-05-17T20:00:00Z"
}
```

### 401 — Missing, malformed, or unknown API key

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 403 — Key lacks the required scope or plan limit violated

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 404 — Resource not found

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 429 — Per-org rate limit exceeded

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 500 — Unexpected server-side failure. The `code` is `internal_error`. The
`request_id` field can be quoted to SendOps support to investigate.

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```