diff --git a/docs/admin_api/event_reports.md b/docs/admin_api/event_reports.md
new file mode 100644
index 0000000000..0159098138
--- /dev/null
+++ b/docs/admin_api/event_reports.md
@@ -0,0 +1,172 @@
+# Show reported events
+
+This API returns information about reported events.
+
+The api is:
+```
+GET /_synapse/admin/v1/event_reports?from=0&limit=10
+```
+To use it, you will need to authenticate by providing an `access_token` for a
+server admin: see [README.rst](README.rst).
+
+It returns a JSON body like the following:
+
+```json
+{
+ "event_reports": [
+ {
+ "event_id": "$bNUFCwGzWca1meCGkjp-zwslF-GfVcXukvRLI1_FaVY",
+ "id": 2,
+ "reason": "foo",
+ "score": -100,
+ "received_ts": 1570897107409,
+ "canonical_alias": "#alias1:matrix.org",
+ "room_id": "!ERAgBpSOcCCuTJqQPk:matrix.org",
+ "name": "Matrix HQ",
+ "sender": "@foobar:matrix.org",
+ "user_id": "@foo:matrix.org"
+ },
+ {
+ "event_id": "$3IcdZsDaN_En-S1DF4EMCy3v4gNRKeOJs8W5qTOKj4I",
+ "id": 3,
+ "reason": "bar",
+ "score": -100,
+ "received_ts": 1598889612059,
+ "canonical_alias": "#alias2:matrix.org",
+ "room_id": "!eGvUQuTCkHGVwNMOjv:matrix.org",
+ "name": "Your room name here",
+ "sender": "@foobar:matrix.org",
+ "user_id": "@bar:matrix.org"
+ }
+ ],
+ "next_token": 2,
+ "total": 4
+}
+```
+
+To paginate, check for `next_token` and if present, call the endpoint again with `from`
+set to the value of `next_token`. This will return a new page.
+
+If the endpoint does not return a `next_token` then there are no more reports to
+paginate through.
+
+**URL parameters:**
+
+* `limit`: integer - Is optional but is used for pagination, denoting the maximum number
+ of items to return in this call. Defaults to `100`.
+* `from`: integer - Is optional but used for pagination, denoting the offset in the
+ returned results. This should be treated as an opaque value and not explicitly set to
+ anything other than the return value of `next_token` from a previous call. Defaults to `0`.
+* `dir`: string - Direction of event report order. Whether to fetch the most recent
+ first (`b`) or the oldest first (`f`). Defaults to `b`.
+* `user_id`: string - Is optional and filters to only return users with user IDs that
+ contain this value. This is the user who reported the event and wrote the reason.
+* `room_id`: string - Is optional and filters to only return rooms with room IDs that
+ contain this value.
+
+**Response**
+
+The following fields are returned in the JSON response body:
+
+* `id`: integer - ID of event report.
+* `received_ts`: integer - The timestamp (in milliseconds since the unix epoch) when this
+ report was sent.
+* `room_id`: string - The ID of the room in which the event being reported is located.
+* `name`: string - The name of the room.
+* `event_id`: string - The ID of the reported event.
+* `user_id`: string - This is the user who reported the event and wrote the reason.
+* `reason`: string - Comment made by the `user_id` in this report. May be blank.
+* `score`: integer - Content is reported based upon a negative score, where -100 is
+ "most offensive" and 0 is "inoffensive".
+* `sender`: string - This is the ID of the user who sent the original message/event that
+ was reported.
+* `canonical_alias`: string - The canonical alias of the room. `null` if the room does not
+ have a canonical alias set.
+* `next_token`: integer - Indication for pagination. See above.
+* `total`: integer - Total number of event reports related to the query
+ (`user_id` and `room_id`).
+
+# Show details of a specific event report
+
+This API returns information about a specific event report.
+
+The api is:
+```
+GET /_synapse/admin/v1/event_reports/<report_id>
+```
+To use it, you will need to authenticate by providing an `access_token` for a
+server admin: see [README.rst](README.rst).
+
+It returns a JSON body like the following:
+
+```jsonc
+{
+ "event_id": "$bNUFCwGzWca1meCGkjp-zwslF-GfVcXukvRLI1_FaVY",
+ "event_json": {
+ "auth_events": [
+ "$YK4arsKKcc0LRoe700pS8DSjOvUT4NDv0HfInlMFw2M",
+ "$oggsNXxzPFRE3y53SUNd7nsj69-QzKv03a1RucHu-ws"
+ ],
+ "content": {
+ "body": "matrix.org: This Week in Matrix",
+ "format": "org.matrix.custom.html",
+ "formatted_body": "<strong>matrix.org</strong>:<br><a href=\"https://matrix.org/blog/\"><strong>This Week in Matrix</strong></a>",
+ "msgtype": "m.notice"
+ },
+ "depth": 546,
+ "hashes": {
+ "sha256": "xK1//xnmvHJIOvbgXlkI8eEqdvoMmihVDJ9J4SNlsAw"
+ },
+ "origin": "matrix.org",
+ "origin_server_ts": 1592291711430,
+ "prev_events": [
+ "$YK4arsKKcc0LRoe700pS8DSjOvUT4NDv0HfInlMFw2M"
+ ],
+ "prev_state": [],
+ "room_id": "!ERAgBpSOcCCuTJqQPk:matrix.org",
+ "sender": "@foobar:matrix.org",
+ "signatures": {
+ "matrix.org": {
+ "ed25519:a_JaEG": "cs+OUKW/iHx5pEidbWxh0UiNNHwe46Ai9LwNz+Ah16aWDNszVIe2gaAcVZfvNsBhakQTew51tlKmL2kspXk/Dg"
+ }
+ },
+ "type": "m.room.message",
+ "unsigned": {
+ "age_ts": 1592291711430,
+ }
+ },
+ "id": <report_id>,
+ "reason": "foo",
+ "score": -100,
+ "received_ts": 1570897107409,
+ "canonical_alias": "#alias1:matrix.org",
+ "room_id": "!ERAgBpSOcCCuTJqQPk:matrix.org",
+ "name": "Matrix HQ",
+ "sender": "@foobar:matrix.org",
+ "user_id": "@foo:matrix.org"
+}
+```
+
+**URL parameters:**
+
+* `report_id`: string - The ID of the event report.
+
+**Response**
+
+The following fields are returned in the JSON response body:
+
+* `id`: integer - ID of event report.
+* `received_ts`: integer - The timestamp (in milliseconds since the unix epoch) when this
+ report was sent.
+* `room_id`: string - The ID of the room in which the event being reported is located.
+* `name`: string - The name of the room.
+* `event_id`: string - The ID of the reported event.
+* `user_id`: string - This is the user who reported the event and wrote the reason.
+* `reason`: string - Comment made by the `user_id` in this report. May be blank.
+* `score`: integer - Content is reported based upon a negative score, where -100 is
+ "most offensive" and 0 is "inoffensive".
+* `sender`: string - This is the ID of the user who sent the original message/event that
+ was reported.
+* `canonical_alias`: string - The canonical alias of the room. `null` if the room does not
+ have a canonical alias set.
+* `event_json`: object - Details of the original event that was reported.
|
