diff --git a/dump/src/reader/v5/keys.rs b/dump/src/reader/v5/keys.rs
new file mode 100644
index 000000000..bcb5d5247
--- /dev/null
+++ b/dump/src/reader/v5/keys.rs
@@ -0,0 +1,81 @@
+use serde::Deserialize;
+use time::OffsetDateTime;
+use uuid::Uuid;
+
+use super::meta::{IndexUid, StarOr};
+
+pub type KeyId = Uuid;
+
+#[derive(Debug, Deserialize)]
+pub struct Key {
+    pub description: Option<String>,
+    pub name: Option<String>,
+    pub uid: KeyId,
+    pub actions: Vec<Action>,
+    pub indexes: Vec<StarOr<IndexUid>>,
+    #[serde(with = "time::serde::rfc3339::option")]
+    pub expires_at: Option<OffsetDateTime>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub created_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub updated_at: OffsetDateTime,
+}
+
+#[derive(Copy, Clone, Deserialize, Debug, Eq, PartialEq, Hash)]
+#[repr(u8)]
+pub enum Action {
+    #[serde(rename = "*")]
+    All = 0,
+    #[serde(rename = "search")]
+    Search,
+    #[serde(rename = "documents.*")]
+    DocumentsAll,
+    #[serde(rename = "documents.add")]
+    DocumentsAdd,
+    #[serde(rename = "documents.get")]
+    DocumentsGet,
+    #[serde(rename = "documents.delete")]
+    DocumentsDelete,
+    #[serde(rename = "indexes.*")]
+    IndexesAll,
+    #[serde(rename = "indexes.create")]
+    IndexesAdd,
+    #[serde(rename = "indexes.get")]
+    IndexesGet,
+    #[serde(rename = "indexes.update")]
+    IndexesUpdate,
+    #[serde(rename = "indexes.delete")]
+    IndexesDelete,
+    #[serde(rename = "tasks.*")]
+    TasksAll,
+    #[serde(rename = "tasks.get")]
+    TasksGet,
+    #[serde(rename = "settings.*")]
+    SettingsAll,
+    #[serde(rename = "settings.get")]
+    SettingsGet,
+    #[serde(rename = "settings.update")]
+    SettingsUpdate,
+    #[serde(rename = "stats.*")]
+    StatsAll,
+    #[serde(rename = "stats.get")]
+    StatsGet,
+    #[serde(rename = "metrics.*")]
+    MetricsAll,
+    #[serde(rename = "metrics.get")]
+    MetricsGet,
+    #[serde(rename = "dumps.*")]
+    DumpsAll,
+    #[serde(rename = "dumps.create")]
+    DumpsCreate,
+    #[serde(rename = "version")]
+    Version,
+    #[serde(rename = "keys.create")]
+    KeysAdd,
+    #[serde(rename = "keys.get")]
+    KeysGet,
+    #[serde(rename = "keys.update")]
+    KeysUpdate,
+    #[serde(rename = "keys.delete")]
+    KeysDelete,
+}
diff --git a/dump/src/reader/v5/meta.rs b/dump/src/reader/v5/meta.rs
index f13c2bbef..07f55f5f8 100644
--- a/dump/src/reader/v5/meta.rs
+++ b/dump/src/reader/v5/meta.rs
@@ -1,14 +1,137 @@
-use serde::{Deserialize, Serialize};
+use std::{
+    fmt::{self, Display, Formatter},
+    marker::PhantomData,
+    str::FromStr,
+};
+
+use serde::{de::Visitor, Deserialize, Deserializer};
 use uuid::Uuid;
 
-#[derive(Serialize, Deserialize, Debug)]
+use super::settings::{Settings, Unchecked};
+
+#[derive(Deserialize, Debug)]
 pub struct IndexUuid {
     pub uid: String,
     pub index_meta: IndexMeta,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Deserialize, Debug)]
 pub struct IndexMeta {
     pub uuid: Uuid,
     pub creation_task_id: usize,
 }
+
+// There is one in each indexes under `meta.json`.
+#[derive(Deserialize)]
+pub struct DumpMeta {
+    pub settings: Settings<Unchecked>,
+    pub primary_key: Option<String>,
+}
+
+#[derive(Deserialize, Debug, Clone, PartialEq, Eq)]
+pub struct IndexUid(pub String);
+
+impl TryFrom<String> for IndexUid {
+    type Error = IndexUidFormatError;
+
+    fn try_from(uid: String) -> Result<Self, Self::Error> {
+        if !uid
+            .chars()
+            .all(|x| x.is_ascii_alphanumeric() || x == '-' || x == '_')
+            || uid.is_empty()
+            || uid.len() > 400
+        {
+            Err(IndexUidFormatError { invalid_uid: uid })
+        } else {
+            Ok(IndexUid(uid))
+        }
+    }
+}
+
+impl FromStr for IndexUid {
+    type Err = IndexUidFormatError;
+
+    fn from_str(uid: &str) -> Result<IndexUid, IndexUidFormatError> {
+        uid.to_string().try_into()
+    }
+}
+
+impl From<IndexUid> for String {
+    fn from(uid: IndexUid) -> Self {
+        uid.into_inner()
+    }
+}
+
+#[derive(Debug)]
+pub struct IndexUidFormatError {
+    pub invalid_uid: String,
+}
+
+impl Display for IndexUidFormatError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "invalid index uid `{}`, the uid must be an integer \
+            or a string containing only alphanumeric characters \
+            a-z A-Z 0-9, hyphens - and underscores _.",
+            self.invalid_uid,
+        )
+    }
+}
+
+impl std::error::Error for IndexUidFormatError {}
+
+/// A type that tries to match either a star (*) or
+/// any other thing that implements `FromStr`.
+#[derive(Debug)]
+pub enum StarOr<T> {
+    Star,
+    Other(T),
+}
+
+impl<'de, T, E> Deserialize<'de> for StarOr<T>
+where
+    T: FromStr<Err = E>,
+    E: Display,
+{
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        /// Serde can't differentiate between `StarOr::Star` and `StarOr::Other` without a tag.
+        /// Simply using `#[serde(untagged)]` + `#[serde(rename="*")]` will lead to attempting to
+        /// deserialize everything as a `StarOr::Other`, including "*".
+        /// [`#[serde(other)]`](https://serde.rs/variant-attrs.html#other) might have helped but is
+        /// not supported on untagged enums.
+        struct StarOrVisitor<T>(PhantomData<T>);
+
+        impl<'de, T, FE> Visitor<'de> for StarOrVisitor<T>
+        where
+            T: FromStr<Err = FE>,
+            FE: Display,
+        {
+            type Value = StarOr<T>;
+
+            fn expecting(&self, formatter: &mut Formatter) -> std::fmt::Result {
+                formatter.write_str("a string")
+            }
+
+            fn visit_str<SE>(self, v: &str) -> Result<Self::Value, SE>
+            where
+                SE: serde::de::Error,
+            {
+                match v {
+                    "*" => Ok(StarOr::Star),
+                    v => {
+                        let other = FromStr::from_str(v).map_err(|e: T::Err| {
+                            SE::custom(format!("Invalid `other` value: {}", e))
+                        })?;
+                        Ok(StarOr::Other(other))
+                    }
+                }
+            }
+        }
+
+        deserializer.deserialize_str(StarOrVisitor(PhantomData))
+    }
+}
diff --git a/dump/src/reader/v5/mod.rs b/dump/src/reader/v5/mod.rs
index 671f0f5d5..9194c81f7 100644
--- a/dump/src/reader/v5/mod.rs
+++ b/dump/src/reader/v5/mod.rs
@@ -46,13 +46,15 @@ use uuid::Uuid;
 use crate::{IndexMetadata, Result, Version};
 
 use self::{
-    meta::IndexUuid,
+    keys::Key,
+    meta::{DumpMeta, IndexUuid},
     settings::{Checked, Settings, Unchecked},
     tasks::Task,
 };
 
 use super::{DumpReader, IndexReader};
 
+mod keys;
 mod meta;
 mod settings;
 mod tasks;
@@ -75,27 +77,6 @@ pub struct V5Reader {
     index_uuid: Vec<IndexUuid>,
 }
 
-struct V5IndexReader {
-    metadata: IndexMetadata,
-
-    documents: BufReader<File>,
-    settings: BufReader<File>,
-}
-
-impl V5IndexReader {
-    pub fn new(name: String, path: &Path) -> Result<Self> {
-        let metadata = File::open(path.join("metadata.json"))?;
-
-        let ret = V5IndexReader {
-            metadata: serde_json::from_reader(metadata)?,
-            documents: BufReader::new(File::open(path.join("documents.jsonl"))?),
-            settings: BufReader::new(File::open(path.join("settings.json"))?),
-        };
-
-        Ok(ret)
-    }
-}
-
 impl V5Reader {
     pub fn open(dump: TempDir) -> Result<Self> {
         let meta_file = fs::read(dump.path().join("metadata.json"))?;
@@ -124,8 +105,7 @@ impl DumpReader for V5Reader {
     type Task = Task;
     type UpdateFile = File;
 
-    // TODO: remove this
-    type Key = meilisearch_auth::Key;
+    type Key = Key;
 
     fn version(&self) -> Version {
         Version::V5
@@ -190,7 +170,6 @@ impl DumpReader for V5Reader {
         }))
     }
 
-    // TODO: do it
     fn keys(&mut self) -> Box<dyn Iterator<Item = Result<Self::Key>> + '_> {
         Box::new(
             (&mut self.keys)
@@ -200,6 +179,36 @@ impl DumpReader for V5Reader {
     }
 }
 
+struct V5IndexReader {
+    metadata: IndexMetadata,
+    settings: Settings<Checked>,
+
+    documents: BufReader<File>,
+}
+
+impl V5IndexReader {
+    pub fn new(name: String, path: &Path) -> Result<Self> {
+        let meta = File::open(path.join("meta.json"))?;
+        let meta: DumpMeta = serde_json::from_reader(meta)?;
+
+        let metadata = IndexMetadata {
+            uid: name,
+            primary_key: meta.primary_key,
+            // FIXME: Iterate over the whole task queue to find the creation and last update date.
+            created_at: OffsetDateTime::now_utc(),
+            updated_at: OffsetDateTime::now_utc(),
+        };
+
+        let ret = V5IndexReader {
+            metadata,
+            settings: meta.settings.check(),
+            documents: BufReader::new(File::open(path.join("documents.jsonl"))?),
+        };
+
+        Ok(ret)
+    }
+}
+
 impl IndexReader for V5IndexReader {
     type Document = serde_json::Map<String, serde_json::Value>;
     type Settings = Settings<Checked>;
@@ -215,7 +224,6 @@ impl IndexReader for V5IndexReader {
     }
 
     fn settings(&mut self) -> Result<Self::Settings> {
-        let settings: Settings<Unchecked> = serde_json::from_reader(&mut self.settings)?;
-        Ok(settings.check())
+        Ok(self.settings.clone())
     }
 }
diff --git a/dump/src/reader/v5/tasks.rs b/dump/src/reader/v5/tasks.rs
index 6683354d1..95e4ad54c 100644
--- a/dump/src/reader/v5/tasks.rs
+++ b/dump/src/reader/v5/tasks.rs
@@ -2,7 +2,10 @@ use serde::{Deserialize, Serialize};
 use time::OffsetDateTime;
 use uuid::Uuid;
 
-use super::settings::{Settings, Unchecked};
+use super::{
+    meta::IndexUid,
+    settings::{Settings, Unchecked},
+};
 
 pub type TaskId = u32;
 pub type BatchId = u32;
@@ -56,9 +59,6 @@ pub enum TaskContent {
     },
 }
 
-#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
-pub struct IndexUid(String);
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub enum IndexDocumentsMethod {
     /// Replace the previous document with the new one,