diff --git a/crates/ide-host/src/plugins/api.rs b/crates/ide-host/src/plugins/api.rs
index 5c379f866..0fa9fea54 100644
--- a/crates/ide-host/src/plugins/api.rs
+++ b/crates/ide-host/src/plugins/api.rs
@@ -18,7 +18,7 @@ use std::sync::atomic::{AtomicU64, Ordering};
 use std::time::{Duration, Instant};
 
 /// Largest storage of one plugin (keys + values).
-const MAX_STORAGE: usize = 1 << 20;
+const MAX_STORAGE: usize = 64 << 20;
 const MAX_KEY: usize = 256;
 /// Most status bar items per plugin.
 const MAX_STATUS_ITEMS: usize = 8;
@@ -856,7 +856,10 @@ impl HostApi for PluginApi {
         }
         let size: usize = map.iter().map(|(k, v)| k.len() + v.len()).sum();
         if size > MAX_STORAGE {
-            return Err(HostError::Invalid(format!("storage is limited to {} KiB", MAX_STORAGE >> 10)));
+            return Err(HostError::Invalid(format!(
+                "storage is limited to {} MiB (UTF-8 keys and values)",
+                MAX_STORAGE >> 20
+            )));
         }
         self.save_storage(&map)
     }
@@ -1292,6 +1295,40 @@ mod tests {
         PluginApi { pkg: Package::new(manifest, dir.to_path_buf()), shared }
     }
 
+    #[test]
+    fn storage_keeps_multimegabyte_indexes_after_host_recreation() {
+        let tmp = tempfile::tempdir().unwrap();
+        let value = "é".repeat(2 << 20);
+        {
+            let api = api(tmp.path(), Arc::default());
+            api.storage_set("index", Some(value.clone())).unwrap();
+        }
+        let api = api(tmp.path(), Arc::default());
+        assert_eq!(api.storage_get("index").unwrap().as_deref(), Some(value.as_str()));
+        api.storage_set("index", None).unwrap();
+        assert_eq!(api.storage_get("index").unwrap(), None);
+    }
+
+    #[test]
+    fn storage_quota_counts_utf8_keys_and_values_and_preserves_data_on_failure() {
+        let tmp = tempfile::tempdir().unwrap();
+        let api = api(tmp.path(), Arc::default());
+        let key = "index";
+        let mut value = "é".repeat(((64 << 20) - key.len()) / 2);
+        value.push('x');
+        api.storage_set(key, Some(value.clone())).unwrap();
+
+        for (key, value) in [("x", String::new()), (key, format!("{value}x"))] {
+            let err = api.storage_set(key, Some(value)).unwrap_err();
+            assert!(matches!(err, HostError::Invalid(ref message) if message.contains("64 MiB")), "{err}");
+        }
+        assert_eq!(api.storage_keys("").unwrap(), [key]);
+        assert_eq!(api.storage_get(key).unwrap().as_deref(), Some(value.as_str()));
+        api.storage_set(key, Some("small".into())).unwrap();
+        api.storage_set("other", Some("value".into())).unwrap();
+        assert_eq!(api.storage_get("other").unwrap().as_deref(), Some("value"));
+    }
+
     #[test]
     fn repository_and_search_paths_match_ipc_events() {
         let tmp = tempfile::tempdir().unwrap();
diff --git a/crates/ide-host/tests/plugins.rs b/crates/ide-host/tests/plugins.rs
index a1e7fa865..e31c52845 100644
--- a/crates/ide-host/tests/plugins.rs
+++ b/crates/ide-host/tests/plugins.rs
@@ -1540,6 +1540,27 @@ fn official_key_promoter() {
     assert!(f.host.event_kinds().is_empty());
 }
 
+#[test]
+fn storage_keeps_multimegabyte_indexes_after_idle_reclaim_and_removes_them_on_uninstall() {
+    let f = fixture(Limits { idle_timeout: Some(Duration::from_millis(100)), ..Limits::default() });
+    let pkg = Path::new(env!("CARGO_MANIFEST_DIR")).join("../ide-plugin/tests/fixtures/storage");
+    f.install(&pkg);
+    f.run("test.storage", "save", None).unwrap();
+    assert_eq!(f.host.instances(), 1);
+    std::thread::sleep(Duration::from_millis(150));
+    f.host.tick();
+    assert_eq!(f.host.instances(), 0);
+    assert_eq!(f.host.info_of("test.storage").unwrap().stats.reclaims, 1);
+    assert_eq!(f.run("test.storage", "load", None).unwrap().as_deref(), Some("4194304"));
+    assert_eq!(f.host.info_of("test.storage").unwrap().stats.activations, 2);
+    let storage_dir = f.plugins_dir.join(".data/test.storage");
+    assert!(storage_dir.join("storage.json").is_file());
+    f.host.uninstall("test.storage").unwrap();
+    assert!(!storage_dir.exists());
+    f.install(&pkg);
+    assert!(f.run("test.storage", "load", None).unwrap_err().contains("missing index"));
+}
+
 fn git(dir: &Path, args: &[&str]) {
     let out = std::process::Command::new("git")
         .args(["-c", "user.name=t", "-c", "user.email=t@t", "-c", "init.defaultBranch=main"])
diff --git a/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm
index 512310a56..c4c54cc72 100644
Binary files a/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm.sources
index e4e7a0746..ea8dfb8e4 100644
--- a/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/commit/dist/plugin.wasm.sources
@@ -1 +1 @@
-e9f2e3818dab64aa24e3f1852eff301c2ba971e90157067b11b832cdcc361fd6
+83a1e3f362740752ed69c53da29ff950cf9c9de18125af6c98995ea490b31690
diff --git a/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm
index 29fd2096a..b615eac69 100644
Binary files a/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm.sources
index 91bac91d4..66a53d3e5 100644
--- a/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/hello/dist/plugin.wasm.sources
@@ -1 +1 @@
-ad6f103e549a51cc64aa9ce03e0759c7e247b98fa4d7d84f2d5cbbd32a56e47a
+a9f1e2ec87de32ef241fcb559d157cd05800dcf106ab27e906ba36468c0b39e5
diff --git a/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm
index 0150f1231..4997739af 100644
Binary files a/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm.sources
index 51895a5d7..aad78a925 100644
--- a/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/hover/dist/plugin.wasm.sources
@@ -1 +1 @@
-bb5747f6e319f1852dbfd92c6a65e6e54a41a6d508fe96dc570a5c0684f7d322
+d065af9f54b5bd1ec2fbc31250c87153a55501a4e8bf4002fcc04c67c2d1e03e
diff --git a/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm
index 8fed17f4b..7c1ec874c 100644
Binary files a/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm.sources
index 6495924ea..0dbbaeed3 100644
--- a/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/indexer/dist/plugin.wasm.sources
@@ -1 +1 @@
-f651ab979bc6b52c5bdde0417667393ffd442726b406b9064a431e0fad39b8be
+dd57b09293deb0fdc3201978e350c118f428429df4beccc4f23665be0335a795
diff --git a/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm
index 410c59c70..1508c592c 100644
Binary files a/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm.sources
index ee95222e0..0c7559d57 100644
--- a/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/jobs/dist/plugin.wasm.sources
@@ -1 +1 @@
-7fd84d18cbcf8673c988e7d3d9a143883635f967ba2b3f679fb1f3aafaa9169c
+436516e5f17a11f5a1225b854ab9fef703172a47d33bf3d840c721ad6d373e62
diff --git a/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm
index 1da6e94d3..45912d407 100644
Binary files a/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm.sources
index 628e1120d..a30308d3a 100644
--- a/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/misbehave/dist/plugin.wasm.sources
@@ -1 +1 @@
-a2762b47de8abd3d1c4fff0130001c6a9347292f94bfffd3933db1a270c95076
+4e8118c9f4974385421d1e2ca0106fd658ad85124e1453c4114f60a164f72f68
diff --git a/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm
index e00246b33..39656c746 100644
Binary files a/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm and b/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm.sources
index 0ffbe7fb7..f360dc576 100644
--- a/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm.sources
+++ b/crates/ide-plugin/tests/fixtures/semantic-tokens/dist/plugin.wasm.sources
@@ -1 +1 @@
-a38d39b7d43d4f2fbcb31064a9037f3a6d58fb16b3e7bfeb0f85f5f13459dbff
+b77e7e3d163995f0a9a3f3cb49dc6c4ea04b2eaa0a8b74b46c64e83908bae504
diff --git a/crates/ide-plugin/tests/fixtures/storage/Cargo.lock b/crates/ide-plugin/tests/fixtures/storage/Cargo.lock
new file mode 100644
index 000000000..2906de079
--- /dev/null
+++ b/crates/ide-plugin/tests/fixtures/storage/Cargo.lock
@@ -0,0 +1,333 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "anyhow"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
+
+[[package]]
+name = "bitflags"
+version = "2.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"
+
+[[package]]
+name = "equivalent"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00d174d5400e5e8fd687ad1049e2f578285fa914201b1af7e8b112a4546bd826"
+
+[[package]]
+name = "foldhash"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
+
+[[package]]
+name = "hashbrown"
+version = "0.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
+dependencies = [
+ "foldhash",
+]
+
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
+[[package]]
+name = "id-arena"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
+
+[[package]]
+name = "indexmap"
+version = "2.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc4e190f5d26ca7051642629da2c52fc03bde85a03197c99408dcd291734c855"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+ "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "itoa"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
+
+[[package]]
+name = "leb128fmt"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
+
+[[package]]
+name = "log"
+version = "0.4.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d15f86d12da44cd8d4ec3c73984537eb7f4cadcb9776a575a0a8a05ca11005c"
+
+[[package]]
+name = "macro-string"
+version = "0.3.0"
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+checksum = "6e7b3a5bbb2f63aaa223a671ea1bd0e7bc16bd30ce387324cf63995deaddbbd2"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "memchr"
+version = "2.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
+
+[[package]]
+name = "openidea-plugin"
+version = "0.1.0"
+dependencies = [
+ "wit-bindgen",
+]
+
+[[package]]
+name = "openidea-test-storage"
+version = "0.1.0"
+dependencies = [
+ "openidea-plugin",
+]
+
+[[package]]
+name = "prettyplease"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bfe0f4c752e450fc2faf62654f1c134747922825d5b04ca717b8874f41a40c0"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "semver"
+version = "1.0.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd"
+
+[[package]]
+name = "serde"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4148590afebada386688f18773da617792bf2ef03ffc1e4cbd2b1d45b023e0ba"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.229"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67dca2c9c51e58a4791a4b1ed58308b39c64224d349a935ab5039aa360942a48"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.229"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
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+[[package]]
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+dependencies = [
+ "itoa",
+ "memchr",
+ "serde",
+ "serde_core",
+ "zmij",
+]
+
+[[package]]
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+version = "3.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d78c8dee4c7bf0e14673097256fed6142ce9d3b85a408189d07482442145823b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
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+checksum = "a2c754d6c33795a1c324727428e5a7dedb5b06195f9890bdbcba760d3e246563"
+
+[[package]]
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+version = "0.262.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4495a6f85dd94c411c749303efcbc5defade0b0cbdbc0541495241ab917a9b5a"
+dependencies = [
+ "leb128fmt",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.262.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c86ff6668190d9fb70372b306b4f9fe8930f0e2f57ce72e4922bf2f117900949"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "wasm-encoder",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.262.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "974d643b125b272607e2fff8012ea14a8328acd7621e4bafa7afb32500052b1b"
+dependencies = [
+ "bitflags",
+ "hashbrown",
+ "indexmap",
+ "semver",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b85a987ab61d365382d25c7d47e26edd48941b3bf6e3fbf76eff918bc71dab06"
+dependencies = [
+ "bitflags",
+ "wit-bindgen-rust-macro",
+]
+
+[[package]]
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+checksum = "775e122e390603abfacd548027016cd0113a6e2bf2f8ce6bdd3658b013456ea8"
+dependencies = [
+ "anyhow",
+ "heck",
+ "wit-parser",
+]
+
+[[package]]
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+version = "0.63.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84e26e13b9d972026778d2ffb7985736de116026fdc8d9464f966e12df2eb240"
+dependencies = [
+ "anyhow",
+ "heck",
+ "indexmap",
+ "prettyplease",
+ "syn",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
+]
+
+[[package]]
+name = "wit-bindgen-rust-macro"
+version = "0.63.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16a008a0d6b4840677326beb4edbeb210a2f1b7d0183fb7cc33f466b90fd7fb6"
+dependencies = [
+ "anyhow",
+ "macro-string",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wit-bindgen-core",
+ "wit-bindgen-rust",
+]
+
+[[package]]
+name = "wit-component"
+version = "0.262.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "078def49fdb49cab405c3006e05793b3fdaf7069126ba6b9c97d01ec8c98fe4c"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.262.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00f0dc051466ffe46787721fca3d088536f158ae400be044f1b1c386ba9397ad"
+dependencies = [
+ "anyhow",
+ "hashbrown",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-ident",
+ "wasmparser",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"
diff --git a/crates/ide-plugin/tests/fixtures/storage/Cargo.toml b/crates/ide-plugin/tests/fixtures/storage/Cargo.toml
new file mode 100644
index 000000000..f525c8b38
--- /dev/null
+++ b/crates/ide-plugin/tests/fixtures/storage/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "openidea-test-storage"
+version = "0.1.0"
+edition = "2024"
+publish = false
+
+[workspace]
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+openidea-plugin = { path = "../../../../../sdk/rust/openidea-plugin" }
+
+[profile.release]
+opt-level = "s"
+lto = true
+strip = true
+codegen-units = 1
+panic = "abort"
diff --git a/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm b/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm
new file mode 100644
index 000000000..55ade2325
Binary files /dev/null and b/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm differ
diff --git a/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm.sources b/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm.sources
new file mode 100644
index 000000000..fe1ac7aa9
--- /dev/null
+++ b/crates/ide-plugin/tests/fixtures/storage/dist/plugin.wasm.sources
@@ -0,0 +1 @@
+9f2195fb83f16221e98313c095d57c293e79041ed8ae439fe2fb4f008a3a0921
diff --git a/crates/ide-plugin/tests/fixtures/storage/plugin.toml b/crates/ide-plugin/tests/fixtures/storage/plugin.toml
new file mode 100644
index 000000000..77acd2c58
--- /dev/null
+++ b/crates/ide-plugin/tests/fixtures/storage/plugin.toml
@@ -0,0 +1,16 @@
+id = "test.storage"
+name = "Storage fixture"
+version = "0.1.0"
+engines.openidea = "^1.3"
+wasm = "dist/plugin.wasm"
+
+[capabilities]
+required = ["storage"]
+
+[[contributes.commands]]
+id = "save"
+title = "Save index"
+
+[[contributes.commands]]
+id = "load"
+title = "Load index"
diff --git a/crates/ide-plugin/tests/fixtures/storage/src/lib.rs b/crates/ide-plugin/tests/fixtures/storage/src/lib.rs
new file mode 100644
index 000000000..c5a493cb5
--- /dev/null
+++ b/crates/ide-plugin/tests/fixtures/storage/src/lib.rs
@@ -0,0 +1,25 @@
+use openidea_plugin::{Error, Invocation, Plugin, host, register_plugin};
+
+#[derive(Default)]
+struct Storage;
+
+impl Plugin for Storage {
+    fn run_command(&mut self, id: &str, _: &Invocation, _: Option<&str>) -> Result<Option<String>, Error> {
+        match id {
+            "save" => {
+                host::storage::set("index", &"é".repeat(2 << 20))?;
+                Ok(None)
+            }
+            "load" => {
+                let value = host::storage::get("index")?.ok_or("missing index")?;
+                if value != "é".repeat(2 << 20) {
+                    return Err("index changed".into());
+                }
+                Ok(Some(value.len().to_string()))
+            }
+            _ => Err(Error::NotFound(id.into())),
+        }
+    }
+}
+
+register_plugin!(Storage);
diff --git a/plugins/README.md b/plugins/README.md
index da543d8af..4d976c25e 100644
--- a/plugins/README.md
+++ b/plugins/README.md
@@ -239,7 +239,7 @@ machine. Users can revoke optional capabilities in Settings › Plugins.
 | `editor.write`      | medium | `TextEditor::apply_edits`                                                                                                    |
 | `vcs.read`          | low    | `Project::vcs_status` (branch, upstream, ahead/behind, changes), `vcs_remotes`, `host::pending_commit`, before-commit checks |
 | `vcs.write`         | medium | `Project::vcs_fetch` (trusted projects only), `host::set_commit_message`                                                     |
-| `storage`           | low    | `host::storage` (1 MiB per plugin)                                                                                           |
+| `storage`           | low    | `host::storage` (64 MiB per plugin, counting UTF-8 bytes of keys and values)                                                 |
 | `events`            | low    | file opened/saved, editor focused, repository changed events                                                                 |
 | `events.input`      | medium | `action-performed` events (which actions you run, and how)                                                                   |
 | `process:<program>` | high   | `Project::run_process`, language servers, debug adapters, runs                                                               |
diff --git a/plugins/official/ai-completion/dist/plugin.wasm b/plugins/official/ai-completion/dist/plugin.wasm
index fb381145c..4090bc909 100644
Binary files a/plugins/official/ai-completion/dist/plugin.wasm and b/plugins/official/ai-completion/dist/plugin.wasm differ
diff --git a/plugins/official/ai-completion/dist/plugin.wasm.sources b/plugins/official/ai-completion/dist/plugin.wasm.sources
index 715a8a3cb..97bb305b2 100644
--- a/plugins/official/ai-completion/dist/plugin.wasm.sources
+++ b/plugins/official/ai-completion/dist/plugin.wasm.sources
@@ -1 +1 @@
-c9cbe5d5a6d2d5bf3bda9308b6e07c374a60b3f95714425e9f0d855bcaa38666
+a5cba00850ccde12896ed7a69ae336a1968e024e8f5fefb6a49f2adea10569e4
diff --git a/plugins/official/checkstyle/dist/plugin.wasm b/plugins/official/checkstyle/dist/plugin.wasm
index d28bdc426..8d0d091fe 100644
Binary files a/plugins/official/checkstyle/dist/plugin.wasm and b/plugins/official/checkstyle/dist/plugin.wasm differ
diff --git a/plugins/official/checkstyle/dist/plugin.wasm.sources b/plugins/official/checkstyle/dist/plugin.wasm.sources
index 29814a869..fbede8a3c 100644
--- a/plugins/official/checkstyle/dist/plugin.wasm.sources
+++ b/plugins/official/checkstyle/dist/plugin.wasm.sources
@@ -1 +1 @@
-dada583da1a117277325077bf700a2b485433768836335683ff3f4d370e43334
+27d61fcc109561aeea56f3a37da0aba7b6c56fdf01ff918f2e62d5732832ba3d
diff --git a/plugins/official/csv-editor/dist/plugin.wasm b/plugins/official/csv-editor/dist/plugin.wasm
index 3fc0f3f05..bbaa24452 100644
Binary files a/plugins/official/csv-editor/dist/plugin.wasm and b/plugins/official/csv-editor/dist/plugin.wasm differ
diff --git a/plugins/official/csv-editor/dist/plugin.wasm.sources b/plugins/official/csv-editor/dist/plugin.wasm.sources
index 5574d116d..309f7acad 100644
--- a/plugins/official/csv-editor/dist/plugin.wasm.sources
+++ b/plugins/official/csv-editor/dist/plugin.wasm.sources
@@ -1 +1 @@
-720fc0e60bb11cabbf9658bbada16eb889e509ab436d62b17b2a64ef9651a559
+c86fae61f88b6903354b1fb706b0718f9036f82085653481d77ddc3f622b3a73
diff --git a/plugins/official/git-toolbox/dist/plugin.wasm b/plugins/official/git-toolbox/dist/plugin.wasm
index 6ce3baa4b..7823ce2da 100644
Binary files a/plugins/official/git-toolbox/dist/plugin.wasm and b/plugins/official/git-toolbox/dist/plugin.wasm differ
diff --git a/plugins/official/git-toolbox/dist/plugin.wasm.sources b/plugins/official/git-toolbox/dist/plugin.wasm.sources
index 965e14771..5027ca6fe 100644
--- a/plugins/official/git-toolbox/dist/plugin.wasm.sources
+++ b/plugins/official/git-toolbox/dist/plugin.wasm.sources
@@ -1 +1 @@
-4ced6756e3f94c0989a7c00948c3456954eaa0b08cb072a3b1790872eabc6a45
+b4d059850083339f826223700eda7df0c8b655a40e4832d3acda36dc0f76db9a
diff --git a/plugins/official/graphviz/dist/plugin.wasm b/plugins/official/graphviz/dist/plugin.wasm
index 2299fe45e..a20fdb830 100644
Binary files a/plugins/official/graphviz/dist/plugin.wasm and b/plugins/official/graphviz/dist/plugin.wasm differ
diff --git a/plugins/official/graphviz/dist/plugin.wasm.sources b/plugins/official/graphviz/dist/plugin.wasm.sources
index 85650c065..f9b5d4c5f 100644
--- a/plugins/official/graphviz/dist/plugin.wasm.sources
+++ b/plugins/official/graphviz/dist/plugin.wasm.sources
@@ -1 +1 @@
-ae7c04be3b7811e560c711077391bec14705a1acb769ba8a7e0212dc8e8ec5ff
+b2977b3b82ad26126125c614281cbbf888bb8151ece9a43fbaa5459c7a8b97cc
diff --git a/plugins/official/key-promoter/dist/plugin.wasm b/plugins/official/key-promoter/dist/plugin.wasm
index b96fa15a7..7a8d47790 100644
Binary files a/plugins/official/key-promoter/dist/plugin.wasm and b/plugins/official/key-promoter/dist/plugin.wasm differ
diff --git a/plugins/official/key-promoter/dist/plugin.wasm.sources b/plugins/official/key-promoter/dist/plugin.wasm.sources
index 5c7365be8..93cb8b224 100644
--- a/plugins/official/key-promoter/dist/plugin.wasm.sources
+++ b/plugins/official/key-promoter/dist/plugin.wasm.sources
@@ -1 +1 @@
-df4f523b86e29e7f5f992eeb9b8fd9ab61b58ac8b9e05d20f1db457e9328f187
+9f59f59b999475a8c4c626f1cfc3c77ef1b3c0684f0cbf9af148556c8f9d30c0
diff --git a/plugins/official/license-header/dist/plugin.wasm b/plugins/official/license-header/dist/plugin.wasm
index b6f0ef5cb..1bac6624b 100644
Binary files a/plugins/official/license-header/dist/plugin.wasm and b/plugins/official/license-header/dist/plugin.wasm differ
diff --git a/plugins/official/license-header/dist/plugin.wasm.sources b/plugins/official/license-header/dist/plugin.wasm.sources
index e1f166679..6fc1569b2 100644
--- a/plugins/official/license-header/dist/plugin.wasm.sources
+++ b/plugins/official/license-header/dist/plugin.wasm.sources
@@ -1 +1 @@
-0a4d7548b157513276176e4e02ec5d8a5a71f55f4098afd9963ec0f47312d6de
+0f175352e4fcfe3b07359afb7f4a20348a488a21012e89775c628d19277d8c8c
diff --git a/plugins/official/mybatis/dist/plugin.wasm b/plugins/official/mybatis/dist/plugin.wasm
index 5b05e7474..9f7a275be 100644
Binary files a/plugins/official/mybatis/dist/plugin.wasm and b/plugins/official/mybatis/dist/plugin.wasm differ
diff --git a/plugins/official/mybatis/dist/plugin.wasm.sources b/plugins/official/mybatis/dist/plugin.wasm.sources
index b291da9ec..0373f3a3f 100644
--- a/plugins/official/mybatis/dist/plugin.wasm.sources
+++ b/plugins/official/mybatis/dist/plugin.wasm.sources
@@ -1 +1 @@
-451c7bf3dcbdd6e57dc657cb7d1f4ddee8d262a859863ac71287b85eb474793c
+d7e9b2801ca70df9a84ec458f0fc5c6b01b7d03c056807c53268e40ecbbb9d1a
diff --git a/plugins/official/regex-tester/dist/plugin.wasm b/plugins/official/regex-tester/dist/plugin.wasm
index fa02945af..bfa4fe0e8 100644
Binary files a/plugins/official/regex-tester/dist/plugin.wasm and b/plugins/official/regex-tester/dist/plugin.wasm differ
diff --git a/plugins/official/regex-tester/dist/plugin.wasm.sources b/plugins/official/regex-tester/dist/plugin.wasm.sources
index 94fe42e82..280635cb3 100644
--- a/plugins/official/regex-tester/dist/plugin.wasm.sources
+++ b/plugins/official/regex-tester/dist/plugin.wasm.sources
@@ -1 +1 @@
-daf6fb2a5cff9210cc380f19dca42480d380166e028239d985abf37ebddd7a6c
+50524b5be85f6bc040521f97adba6030263045dcacfeae8dbcf73ce7234e2616
diff --git a/plugins/official/solidity/dist/plugin.wasm b/plugins/official/solidity/dist/plugin.wasm
index b5b4c7104..55aa66561 100644
Binary files a/plugins/official/solidity/dist/plugin.wasm and b/plugins/official/solidity/dist/plugin.wasm differ
diff --git a/plugins/official/solidity/dist/plugin.wasm.sources b/plugins/official/solidity/dist/plugin.wasm.sources
index 81268eb86..4ef5e13e3 100644
--- a/plugins/official/solidity/dist/plugin.wasm.sources
+++ b/plugins/official/solidity/dist/plugin.wasm.sources
@@ -1 +1 @@
-1364aed3a99e0769d53b444c51b873083aeb7088afa7dc6c8821cd312d0319ad
+0c44311a5f9ddb1893be7c82d818297a05b15576d996a33ddc2389f9432c416c
diff --git a/plugins/official/string-tools/dist/plugin.wasm b/plugins/official/string-tools/dist/plugin.wasm
index edb2b3fdc..c2702a54f 100644
Binary files a/plugins/official/string-tools/dist/plugin.wasm and b/plugins/official/string-tools/dist/plugin.wasm differ
diff --git a/plugins/official/string-tools/dist/plugin.wasm.sources b/plugins/official/string-tools/dist/plugin.wasm.sources
index 23d8f1f07..ecce56321 100644
--- a/plugins/official/string-tools/dist/plugin.wasm.sources
+++ b/plugins/official/string-tools/dist/plugin.wasm.sources
@@ -1 +1 @@
-d6d1a81f02c7346b365689bc3893745aa9d867e56c187cdd28efde758bfb0fe8
+3e4e23976ce0ddb1e83813269eefc24008521cdf22757e6b5249f6f219f344d2
diff --git a/sdk/rust/openidea-plugin/src/host.rs b/sdk/rust/openidea-plugin/src/host.rs
index 55a0b0e31..7ce3f9828 100644
--- a/sdk/rust/openidea-plugin/src/host.rs
+++ b/sdk/rust/openidea-plugin/src/host.rs
@@ -749,7 +749,8 @@ pub fn unsubscribe(kind: EventKind) {
     imp::unsubscribe(kind)
 }
 
-/// The plugin's persistent key-value store (≤ 1 MiB). Needs `storage`.
+/// The plugin's persistent key-value store (≤ 64 MiB of UTF-8 keys and values).
+/// Needs `storage`; rejected writes preserve the stored data.
 pub mod storage {
     use super::imp;
     use crate::types::Error;
diff --git a/sdk/rust/openidea-plugin/wit/host.wit b/sdk/rust/openidea-plugin/wit/host.wit
index cda36d5d1..5e7f7cf38 100644
--- a/sdk/rust/openidea-plugin/wit/host.wit
+++ b/sdk/rust/openidea-plugin/wit/host.wit
@@ -68,7 +68,8 @@ interface ui {
 }
 
 /// Persistent key-value storage of the plugin (survives restarts and idle
-/// reclaim; instance memory does not). Requires `storage`. At most 1 MiB.
+/// reclaim; instance memory does not). Requires `storage`. At most 64 MiB,
+/// counting UTF-8 bytes of keys and values; rejected writes preserve the data.
 interface storage {
     use types.{error};
 
diff --git a/wit/host.wit b/wit/host.wit
index cda36d5d1..5e7f7cf38 100644
--- a/wit/host.wit
+++ b/wit/host.wit
@@ -68,7 +68,8 @@ interface ui {
 }
 
 /// Persistent key-value storage of the plugin (survives restarts and idle
-/// reclaim; instance memory does not). Requires `storage`. At most 1 MiB.
+/// reclaim; instance memory does not). Requires `storage`. At most 64 MiB,
+/// counting UTF-8 bytes of keys and values; rejected writes preserve the data.
 interface storage {
     use types.{error};