diff --git a/books/architecture/src/storage/common/ops.md b/books/architecture/src/storage/common/ops.md
index 2bfd3f9..8ade48b 100644
--- a/books/architecture/src/storage/common/ops.md
+++ b/books/architecture/src/storage/common/ops.md
@@ -1 +1,11 @@
-# 🟢 ops
+# `ops`
+Both [`cuprate_blockchain`](https://doc.cuprate.org/cuprate_blockchain)
+and [`cuprate_txpool`](https://doc.cuprate.org/cuprate_txpool) expose an
+`ops` module containing abstracted abstracted Monero-related database operations.
+
+For example, [`cuprate_blockchain::ops::block::add_block`](https://doc.cuprate.org/cuprate_blockchain/ops/block/fn.add_block.html).
+
+These functions build on-top of the database traits and allow for more abstracted database operations.
+
+Although these are exposed, they are not the main API, that would be next section:
+the [`tower::Service`](./service/intro.md) (which uses these functions).
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