diff --git a/build/sqlc/README.md b/build/sqlc/README.md
new file mode 100644
index 0000000..72d9a86
--- /dev/null
+++ b/build/sqlc/README.md
@@ -0,0 +1,50 @@
+Bazel rules for sqlc
+===
+
+This is a set of rules which uses [sqlc](https://github.com/kyleconroy/sqlc) to generate Go code (types and functions) based on a SQL schema/migrations and a list of queries to be turned into functions.
+
+It also embeds the migrations using [bindata](https://github.com/kevinburke/go-bindata).
+
+Usage
+---
+
+In an empty directory (eg. monogon/foo/bar/model), create:
+
+ - Migration files, eg. `1662395623_foo.up.sql` and `1662395623_foo.down.sql` containing CREATE TABLE and DROP TABLE statements respectively.
+ - A query file, containing SQL queries annotated with function names and return values (see [official docs](https://docs.sqlc.dev/en/stable/tutorials/getting-started-postgresql.html) for a sample `query.sql` file).
+ - A `BUILD.bazel` file containing:
+
+```
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("//build/sqlc:sqlc.bzl", "sqlc_go_library")
+
+sqlc_go_library(
+    name = "sqlc_model",
+    importpath = "source.monogon.dev/foo/bar/model",
+    migrations = [
+        "1662395623_foo.up.sql",
+        "1662395623_foo.down.sql",
+        # More migrations can be created by provising larger timestamp values.
+    ],
+    queries = [
+        "queries.sql",
+    ],
+    dialect = "cockroachdb",
+)
+
+go_library(
+    name = "model",
+    importpath = "source.monogon.dev/foo/bar/model",
+    embed = [":sqlc_model"],
+    deps = [
+        # Might need this for CockroachDB UUID types.
+        "@com_github_google_uuid//:uuid",
+    ],
+)
+```
+
+The built `go_library ` will contain sqlc functions corresponding to queries defined in `queries.sql` and structures corresponding to database tables (and query parameters/results).
+
+To list the generated files for inspection/debugging, `bazel aquery //foo/bar:sqlc_model` and find files named `db.go`, `model.go` and `queries.sql.go` (or similar, depending on how your query file(s) are named).
+
+TODO(q3k): document migrations (and probably move them to a subpackage).
\ No newline at end of file