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+# Amazon — Order History Extraction
+
+Field-tested against amazon.co.uk on a 2010-2026 account (1,007 orders), first on
+2026-07-16 and re-verified end-to-end on 2026-07-29. Complements
+[product-search.md](product-search.md), which covers the public catalogue; this file covers the
+logged-in `/your-orders` pages.
+
+## Auth
+
+Order history requires login. An unauthenticated visit to any orders URL redirects to
+`/ap/signin` (title "Amazon Sign-In") — detect this and stop for a human login rather than
+typing credentials:
+
+```python
+if "/ap/signin" in page_info()["url"]:
+    raise RuntimeError("Amazon session not logged in — do a one-time headed login first")
+```
+
+A one-time headed login persists in the profile; no re-challenge was observed on later
+headless runs from the same profile/IP.
+
+## Navigation
+
+First visit uses `new_tab()`, the same gotcha documented in product-search.md; `goto_url()`
+is fine for every page after that.
+
+```python
+new_tab("https://www.amazon.co.uk/your-orders/orders?timeFilter=year-2025&startIndex=0")
+wait_for_load()
+wait(2)  # the order list hydrates after readyState=complete
+```
+
+- `timeFilter` takes `last30`, `months-3`, then `year-YYYY` back to the account's first year.
+  Read the valid values off the page rather than guessing:
+  ```python
+  years = json.loads(js(
+      "JSON.stringify(Array.from(document.querySelectorAll('#time-filter option')).map(o => o.value))"
+  ))
+  ```
+- `startIndex` steps in 10s (`0, 10, 20, ...`) — 10 orders per page.
+
+## Know the expected count before you paginate
+
+The page states its own total, so a scrape can verify itself instead of guessing when to
+stop. This is the difference between a complete run and a short one that looks complete.
+
+```python
+import re
+count_text = js("document.querySelector('.num-orders')?.innerText")  # '186 orders' / '1 order'
+expected = int(re.sub(r"[^\d]", "", count_text or "0") or 0)
+```
+
+Stop on the pagination control, not on a short page — `.a-last` carries `a-disabled` on the
+final page and the whole `.a-pagination` block is absent when a year fits on one page:
+
+```python
+is_last_page = bool(js("""
+  (function () {
+    const l = document.querySelector('.a-pagination .a-last');
+    return !l || l.classList.contains('a-disabled');
+  })()
+"""))
+```
+
+Then assert what you collected against what the page promised, and fail loudly on a
+mismatch rather than writing a truncated file:
+
+```python
+if len(collected) != expected:
+    raise RuntimeError(f"year-{year}: got {len(collected)} of {expected} orders — investigate before trusting output")
+```
+
+Verified on `year-2026`: 57 expected, 6 pages, 57 collected, every order dated.
+
+## Extraction
+
+Each order is an `.order-card`. Titles are the product links inside it; the order date is
+loose text in the card. `js()` hands back whatever the expression evaluates to, so a
+`JSON.stringify` payload needs `json.loads` on the Python side to become a list:
+
+```python
+import json
+
+page_orders = json.loads(js("""JSON.stringify(Array.from(document.querySelectorAll('.order-card')).map(c => {
+  const m = c.innerText.match(/(\\d{1,2}\\s+[A-Za-z]+\\s+\\d{4}|[A-Za-z]+\\s+\\d{1,2},\\s+\\d{4})/);
+  const titles = Array.from(new Set(Array.from(
+    c.querySelectorAll('.yohtmlc-product-title, a.a-link-normal[href*="/dp/"], a.a-link-normal[href*="/gp/product/"]')
+  ).map(a => a.innerText.trim()).filter(t => t && t.length > 2)));
+  return {date: m ? m[1] : '', titles};
+}))"""))
+```
+
+The date alternation covers both `31 December 2024` (co.uk) and `December 31, 2024` (.com);
+a UK-only pattern silently yields `date: ''` for every order on the US site.
+
+## Gotchas
+
+- **Wait ~2s after `wait_for_load()`** before querying cards. `readyState=complete` fires
+  before the list renders, exactly as on search results.
+- **Trust `.num-orders`, not an empty page.** A year returning zero cards is a signal to
+  inspect the DOM, never evidence of "no orders" — an earlier run on this account read
+  `year-2024`+ as empty and was wrong. Re-verified 2026-07-29: `year-2010` through
+  `year-2026` all extract with `.order-card`, 10 per page.
+- **Don't stop on a short page alone.** The final page is legitimately short (7 of 10 on
+  `year-2026`), so a short-page-means-done rule is indistinguishable from a page that
+  under-rendered. Use `.a-last` plus the count assertion.
+- **Digital items** (Kindle, Prime Video) sit alongside physical ones with no reliable
+  in-card type marker — classify by title downstream.
+- **Long runs**: ~2-3s per page, and grocery-heavy years run 20+ pages. Checkpoint to disk
+  after each year and `print(..., flush=True)` — a killed run with buffered stdout loses
+  everything.