# Price stats

> Low, high, median, first, last and the percentage change of the composite index over a window.

- **Endpoint**: `GET /v1/cards/{id}/prices/stats`
- **Cost**: 2 credits
- **Minimum plan**: free
- **Cache-Control**: `private, max-age=300`

Source: https://pokemontcgapi.com/docs/api/prices/stats

No key yet? One call gets you one: `POST /v1/accounts/free` with an `Idempotency-Key` header and your email address returns a working key in the response. Keep the original Idempotency-Key and body for response replay for up to 24 hours, under the conditions in the quickstart. The trial is 800 credits over 30 days once the address is confirmed, no card; paid plans start at 29 € a month. See the [quickstart](https://pokemontcgapi.com/docs/quickstart) and the [pricing](https://pokemontcgapi.com/pricing).

Always computed on `PTCG_INDEX`, in EUR — the one series that exists for every priced card and is comparable across them. `sample_n` is the number of index points in the window; zero means the card had no index in that period, and every other field is null.

Two credits, not five: a stats call reads the index rows of one card, which is a fraction of what a history call touches.

## Path parameters

| Name | Type | Default | Description |
| --- | --- | --- | --- |
| `id` **required** | string | — | Card id or alternate id. |

## Query parameters

| Name | Type | Default | Description |
| --- | --- | --- | --- |
| `window` | string | 30d | `7d`, `30d`, `90d` or `365d`. A window longer than the plan’s history is `UPGRADE_REQUIRED`, with `details.plan_window_days` and `details.next_step`. |
| `locale` | string | — | The printing language of the index series to summarise. The index is one series per language, so a summary across languages would compare a French point with a Spanish one. Unset, it is the language of the card’s print region — `en` for Western printings, `ja`, `zh` or `ko` for the others — and `meta.locale` says which one was used. |

## Headers

| Name | Type | Default | Description |
| --- | --- | --- | --- |
| `X-Api-Key` **required** | string | — | Your API key. `Authorization: Bearer <key>` is accepted as an alias. |
| `If-None-Match` | string | — | Send back the `ETag` you stored. The API returns a strong ETag on every catalogue response, and a 304 is a header exchange: no body, no database row read. |

## Example request

**curl**

```bash
curl -s -G "https://api.pokemontcgapi.com/v1/cards/base1-4/prices/stats" \
  --data-urlencode "window=30d" \
  -H "X-Api-Key: $PTCG_API_KEY"
```

**TypeScript**

`request.ts`

```ts
const url = new URL("https://api.pokemontcgapi.com/v1/cards/base1-4/prices/stats");
url.searchParams.set("window", "30d");

const res = await fetch(url, {
  headers: { "X-Api-Key": process.env.PTCG_API_KEY ?? "" },
});

if (!res.ok) {
  const { error } = await res.json();
  throw new Error(`${error.code}: ${error.message} (${error.request_id})`);
}

const { data, meta } = await res.json();
```

**Python**

`request.py`

```python
import os, httpx

res = httpx.get(
    "https://api.pokemontcgapi.com/v1/cards/base1-4/prices/stats",
    params={"window": "30d"},
    headers={"X-Api-Key": os.environ["PTCG_API_KEY"]},
)
res.raise_for_status()
payload = res.json()
```

## Example response

`200 OK` · `Cache-Control: private, max-age=300`

`response.json`

```json
{
  "data": {
    "window": "30d",
    "from": "2026-08-03",
    "to": "2026-09-02",
    "low": 431.41,
    "high": 431.41,
    "median": 431.41,
    "first": 431.41,
    "last": 431.41,
    "change_pct": 0,
    "sample_n": 1,
    "currency": "EUR"
  },
  "meta": {
    "card_id": "base1-4",
    "source": "PTCG_INDEX"
  }
}
```

## Errors

Every error body carries `error.code`, `error.message` and `error.request_id`. Switch on the code, never on the message.

| Status | Code | When |
| --- | --- | --- |
| 401 | `MISSING_API_KEY` | No `X-Api-Key` header and no bearer token on a route that requires one. |
| 401 | `INVALID_API_KEY` | The key does not match any account. |
| 400 | `INVALID_PARAMETER` | A query parameter has the wrong type or an unsupported value — a non-integer `limit`, an unknown `lang`, an unknown `region`, a sort key that is not sortable. |
| 403 | `UPGRADE_REQUIRED` | A parameter asks for more than the plan allows: a `window` longer than the plan’s history, for example. `details.plan_window_days` says how much the plan gives; `details.next_step` carries the owner action and handoff. |
| 429 | `QUOTA_EXCEEDED` | Trial credits, monthly credits or the daily cap are exhausted, and `details` says which: `daily_cap` with `retry_after_s` is the trial daily cap, which resets at midnight UTC; `renews: true` with `resets_at` is the monthly quota of a paid plan; `renews: false` is the trial allowance, which never comes back. `details.next_step` carries the plan, prices and owner action, or email verification when it unlocks the full trial. |
| 403 | `PLAN_REQUIRED` | The feature is outside the plan (movers require Growth; photo recognition has 5 calls after Free email confirmation, then requires Growth), or the account subscription is canceled or suspended. Centering requires Growth or higher; Developer is excluded. After email confirmation the trial includes 5 measure and 5 confirm calls independently; grade and standards use trial credits without separate call counters. Before email confirmation, the message starts with “Confirm your email…”. Follow details.next_step when present. |
| 403 | `TRIAL_EXPIRED` | The trial has ended: the account is on the trial and its 30 days from signup are over, and this route costs credits. `details.trial_expired_at` is the date, `details.trial_days` the length, and `details.next_step` the owner handoff. Zero-cost routes — `/v1/me`, `/v1/me/usage`, the key routes and `/v1/billing/checkout` — still answer. |

The full taxonomy, with what to do about each code, is on the [errors](https://pokemontcgapi.com/docs/errors) page.