# amo.top_themes

**stable** **Advanced**

Most-used Firefox themes (AMO).

`GET /v1/amo/top_themes`

## What you get

A list of Amo results in Onekey's unified shape, in `data` (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free `404 not_found` instead.

## What it costs

- **Advanced · 5 credits** for a fresh fetch, charged only when it succeeds.
- **Free when served from cache (0.2 credit for a cached response over 100 KB).**
- **Free** if the request is invalid (never charged) or the source fails or reports not found (refunded).

## Parameters

This endpoint takes no parameters.

## Request

```bash
curl "https://api.onekey.dev/v1/amo/top_themes" \
  -H "x-api-key: YOUR_API_KEY"
```

```python
import requests

res = requests.get(
    "https://api.onekey.dev/v1/amo/top_themes",
    params={},
    headers={"x-api-key": "YOUR_API_KEY"},
)
body = res.json()

if body["success"]:
    print(body["data"])
else:
    print(body["error"]["code"], body["error"]["message"])
```

```javascript
const params = new URLSearchParams({});
const res = await fetch(`https://api.onekey.dev/v1/amo/top_themes?${params}`, {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const body = await res.json();

if (body.success) console.log(body.data);
else console.error(body.error.code, body.error.message);
```

## Recorded response

A real Amo response, recorded and returned in Onekey's shape. Fields the platform does not provide are `null`.

```json
{
  "success": true,
  "data": [
    {
      "entity": {
        "id": "2785297",
        "name": {
          "en-US": "Activist – Balanced"
        },
        "slug": "activist-balanced_",
        "description": {
          "en-US": "You leave the world a better place than you found it and lead others to believe."
        },
        "url": "https://addons.mozilla.org/en-US/firefox/addon/activist-balanced_/",
        "type": "statictheme",
        "stats": {
          "rating": 4.6346,
          "ratingCount": 156
        },
        "tags": [
          "firefox"
        ]
      },
      "package": {
        "version": "2.1"
      },
      "ext": {
        "developer": "Firefox",
        "users": 307914,
        "weeklyDownloads": 641
      },
      "content": {
        "createdAt": "2023-02-03T15:37:48Z",
        "updatedAt": "2023-02-03T15:46:41Z"
      },
      "media": {
        "thumbnailUrl": "https://addons.mozilla.org/static-server/img/addon-icons/default-64.png"
      }
    },
    {
      "entity": {
        "id": "2785324",
        "name": {
          "en-US": "Visionary – Balanced"
        },
        "slug": "visionary-balanced",
        "description": {
          "en-US": "You question the status quo and move others to imagine a better future."
        },
        "url": "https://addons.mozilla.org/en-US/firefox/addon/visionary-balanced/",
        "type": "statictheme",
        "stats": {
          "rating": 4.4559,
          "ratingCount": 68
        },
        "tags": [
          "firefox"
        ]
      },
      "package": {
        "version": "2.1"
      },
      "ext": {
        "developer": "Firefox",
        "users": 190602,
        "weeklyDownloads": 198
      },
      "content": {
        "createdAt": "2023-02-03T17:30:34Z",
        "updatedAt": "2023-02-03T18:28:58Z"
      },
      "media": {
        "thumbnailUrl": "https://addons.mozilla.org/static-server/img/addon-icons/default-64.png"
      }
    }
  ],
  "metadata": {
    "platform": "amo",
    "endpoint": "top_themes",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}
```

## Field mapping

How this endpoint's source fields become Onekey's [unified schema](https://onekey.dev/docs/schema.md). Fields the source lacks come back as `null`.

| Source path | Onekey field | Transform |
| --- | --- | --- |
| `id` | `entity.id` | `toString` |
| `name` | `entity.name` | - |
| `slug` | `entity.slug` | - |
| `summary` | `entity.description` | `stripHtml` |
| `url` | `entity.url` | `safeUrl` |
| `type` | `entity.type` | - |
| `current_version.version` | `package.version` | - |
| `authors.0.name` | `ext.developer` | - |
| `average_daily_users` | `ext.users` | `toNumber` |
| `weekly_downloads` | `ext.weeklyDownloads` | `toNumber` |
| `ratings.average` | `entity.stats.rating` | `toNumber` |
| `ratings.count` | `entity.stats.ratingCount` | `toNumber` |
| `created` | `content.createdAt` | `toIsoDate` |
| `last_updated` | `content.updatedAt` | `toIsoDate` |
| `categories` | `entity.tags` | - |
| `icon_url` | `media.thumbnailUrl` | `safeUrl` |

## Caching and freshness

- Fresh for about 1 hour. Repeat calls in that window are served from cache and are free.
- Between 1 hour and 1 day the cached copy is still served instantly and marked `stale: true` while Onekey refreshes it in the background.
- If the source is down when a refresh is needed, the last copy can be served for up to 1 day more (marked stale).
- A "not found" is remembered for 1 minute and is free.
- The cache is shared across all customers, which is what keeps repeat calls cheap.

## What can go wrong

| Status | Code | What to do |
| --- | --- | --- |
| 401 | `unauthorized` | Check the `x-api-key` header. |
| 402 | `insufficient_credits` | [Add credits](https://onekey.dev/pricing); your balance must cover the price. |
| 404 | `not_found` | Unknown endpoint path. |
| 422 | `invalid_params` | Fix the parameters using the table above. Free. |
| 429 | `rate_limited` | Wait `Retry-After` seconds, then retry. |
| 502 | `upstream_error` | The source failed. Refunded; retry with backoff. |

See [Errors](https://onekey.dev/docs/errors.md) for the full list and retry guidance.

Status: stable (verified against the live source).