diff --git a/.gitignore b/.gitignore
index ea8c4bf..9751b70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 /target
+
+/*.txt
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index a46a8e0..02de07a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -203,13 +203,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "713c6293af093c202ad318e8f7bdc1de1a36d7a793bb77f7fc6bd6f1788659a9"
 dependencies = [
  "compio-buf",
+ "compio-dispatcher",
  "compio-driver",
  "compio-fs",
  "compio-io",
  "compio-log",
  "compio-macros",
  "compio-net",
+ "compio-process",
+ "compio-quic",
  "compio-runtime",
+ "compio-signal",
 ]
 
 [[package]]
@@ -223,6 +227,18 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "compio-dispatcher"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0cdf8c613be826be410d8744ab30acc49cc5134a78e2aa25efae9efa44bed6a7"
+dependencies = [
+ "compio-driver",
+ "compio-runtime",
+ "flume",
+ "futures-channel",
+]
+
 [[package]]
 name = "compio-driver"
 version = "0.8.1"
@@ -237,10 +253,13 @@ dependencies = [
  "crossbeam-channel",
  "crossbeam-queue",
  "futures-util",
+ "io-uring",
+ "io_uring_buf_ring",
  "libc",
  "once_cell",
  "paste",
  "polling",
+ "slab",
  "socket2",
  "windows-sys 0.52.0",
 ]
@@ -314,6 +333,43 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "compio-process"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3867cfe7b23eaae89ff815aba4fdde61cb6fd55f81fd368128300c6b7e645016"
+dependencies = [
+ "cfg-if",
+ "compio-buf",
+ "compio-driver",
+ "compio-io",
+ "compio-runtime",
+ "futures-util",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "compio-quic"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f107e044329f1e171930801b09bfc6e764c5e171e45c7a3e382f98561da619a"
+dependencies = [
+ "cfg_aliases",
+ "compio-buf",
+ "compio-io",
+ "compio-log",
+ "compio-net",
+ "compio-runtime",
+ "flume",
+ "futures-util",
+ "libc",
+ "quinn-proto",
+ "rustc-hash",
+ "rustls",
+ "thiserror 2.0.12",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "compio-runtime"
 version = "0.8.1"
@@ -330,10 +386,27 @@ dependencies = [
  "libc",
  "once_cell",
  "scoped-tls",
+ "slab",
  "socket2",
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "compio-signal"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03d2931880b03b33d4df7d2b8a008e93731366d185358c7442fc8d24d5f9c1bd"
+dependencies = [
+ "compio-buf",
+ "compio-driver",
+ "compio-runtime",
+ "libc",
+ "once_cell",
+ "os_pipe",
+ "slab",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "concurrent-queue"
 version = "2.5.0"
@@ -480,7 +553,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "778e2ac28f6c47af28e4907f13ffd1e1ddbd400980a9abd7c8df189bf578a5ad"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -493,6 +566,18 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "flume"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da0e4dd2a88388a1f4ccc7c9ce104604dab68d9f408dc34cd45823d5a9069095"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "nanorand",
+ "spin",
+]
+
 [[package]]
 name = "futures-channel"
 version = "0.3.31"
@@ -562,6 +647,33 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "wasi 0.11.1+wasi-snapshot-preview1",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "r-efi",
+ "wasi 0.14.2+wasi-0.2.4",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "gimli"
 version = "0.31.1"
@@ -651,6 +763,28 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "io-uring"
+version = "0.7.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d93587f37623a1a17d94ef2bc9ada592f5465fe7732084ab7beefabe5c77c0c4"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "libc",
+]
+
+[[package]]
+name = "io_uring_buf_ring"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a8867874ff5758b47c1dac069e6e86541432f9da8be9111c5e94154134f07d0"
+dependencies = [
+ "bytes",
+ "io-uring",
+ "rustix",
+]
+
 [[package]]
 name = "is-terminal"
 version = "0.4.16"
@@ -718,6 +852,12 @@ version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
+[[package]]
+name = "lru-slab"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
+
 [[package]]
 name = "md5"
 version = "0.8.0"
@@ -745,6 +885,26 @@ dependencies = [
  "adler2",
 ]
 
+[[package]]
+name = "mio"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78bed444cc8a2160f01cbcf811ef18cac863ad68ae8ca62092e8db51d51c761c"
+dependencies = [
+ "libc",
+ "wasi 0.11.1+wasi-snapshot-preview1",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "nanorand"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a51313c5820b0b02bd422f4b44776fbf47961755c74ce64afc73bfad10226c3"
+dependencies = [
+ "getrandom 0.2.16",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -986,6 +1146,15 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "3.3.0"
@@ -1004,6 +1173,26 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "quinn-proto"
+version = "0.11.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49df843a9161c85bb8aae55f101bc0bac8bcafd637a620d9122fd7e0b2f7422e"
+dependencies = [
+ "bytes",
+ "getrandom 0.3.3",
+ "lru-slab",
+ "rand",
+ "ring",
+ "rustc-hash",
+ "rustls-pki-types",
+ "slab",
+ "thiserror 2.0.12",
+ "tinyvec",
+ "tracing",
+ "web-time",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.40"
@@ -1013,6 +1202,41 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
+[[package]]
+name = "rand"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
+dependencies = [
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
+dependencies = [
+ "getrandom 0.3.3",
+]
+
 [[package]]
 name = "ref-cast"
 version = "1.0.24"
@@ -1033,12 +1257,32 @@ dependencies = [
  "syn 2.0.104",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.16",
+ "libc",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56f7d92ca342cea22a06f2121d944b4fd82af56988c270852495420f961d4ace"
 
+[[package]]
+name = "rustc-hash"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d"
+
 [[package]]
 name = "rustc_version"
 version = "0.4.1"
@@ -1058,7 +1302,41 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "rustls"
+version = "0.23.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0ebcbd2f03de0fc1122ad9bb24b127a5a6cd51d72604a3f3c50ac459762b6cc"
+dependencies = [
+ "once_cell",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "229a4a4c221013e7e1f1a043678c5cc39fe5171437c88fb47151a21e6f5b5c79"
+dependencies = [
+ "web-time",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.103.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a17884ae0c1b773f1ccd2bd4a8c72f16da897310a98b0e84bf349ad5ead92fc"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
 ]
 
 [[package]]
@@ -1102,6 +1380,7 @@ dependencies = [
  "cbc",
  "chrono",
  "cipher",
+ "compio",
  "digest",
  "flate2",
  "hmac-sha256",
@@ -1111,6 +1390,7 @@ dependencies = [
  "serde_json",
  "snafu",
  "strum 0.27.2",
+ "tokio",
 ]
 
 [[package]]
@@ -1118,6 +1398,7 @@ name = "sdgb-cli"
 version = "0.1.0"
 dependencies = [
  "compio",
+ "futures-util",
  "nyquest-preset",
  "palc",
  "sdgb-api",
@@ -1125,6 +1406,7 @@ dependencies = [
  "snafu",
  "spdlog-rs",
  "strum 0.27.2",
+ "tokio",
 ]
 
 [[package]]
@@ -1308,6 +1590,12 @@ dependencies = [
  "syn 2.0.104",
 ]
 
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -1370,6 +1658,47 @@ dependencies = [
  "syn 2.0.104",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09b3661f17e86524eccd4371ab0429194e0d7c008abb45f7a7495b1719463c71"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
+[[package]]
+name = "tokio"
+version = "1.47.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43864ed400b6043a4757a25c7a64a8efde741aed79a056a2fb348a406701bb35"
+dependencies = [
+ "backtrace",
+ "io-uring",
+ "libc",
+ "mio",
+ "pin-project-lite",
+ "slab",
+ "tokio-macros",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.104",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.11"
@@ -1402,6 +1731,9 @@ name = "tracing-core"
 version = "0.1.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
+dependencies = [
+ "once_cell",
+]
 
 [[package]]
 name = "typenum"
@@ -1415,6 +1747,12 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -1427,6 +1765,21 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "wasi"
+version = "0.14.2+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.100"
@@ -1485,6 +1838,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "widestring"
 version = "1.2.0"
@@ -1788,3 +2151,38 @@ checksum = "f3edebf492c8125044983378ecb5766203ad3b4c2f7a922bd7dd207f6d443e95"
 dependencies = [
  "memchr",
 ]
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1039dd0d3c310cf05de012d8a39ff557cb0d23087fd44cad61df08fc31907a2f"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ecf5b4cc5364572d7f4c329661bcc82724222973f2cab6f050a4e5c22f75181"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.104",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
diff --git a/Cargo.toml b/Cargo.toml
index 9e3a459..0a471e3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,11 +3,13 @@ members = ["sdgb-api", "sdgb-cli"]
 resolver = "3"
 
 [workspace.dependencies]
-sdgb-api = { path = "./sdgb-api" }
+sdgb-api = { path = "./sdgb-api", default-features = false }
 
 snafu = { version = "0.8.6", features = ["backtrace", "rust_1_81"] }
 serde_json = "1.0.141"
 strum = { version = "0.27.2", features = ["derive"] }
+tokio = { version = "1", features = ["rt-multi-thread"] }
+compio = { version = "0.15.0", features = ["runtime"] }
 
 [profile.release]
 lto = true
diff --git a/sdgb-api/Cargo.toml b/sdgb-api/Cargo.toml
index 723fff3..7ddab9e 100644
--- a/sdgb-api/Cargo.toml
+++ b/sdgb-api/Cargo.toml
@@ -5,10 +5,17 @@ edition = "2024"
 
 license = "GPL-3.0"
 
+[features]
+default = ["compio"]
+compio = ["dep:compio"]
+tokio = ["dep:tokio"]
+
 [dependencies]
 snafu = { workspace = true }
 serde_json = { workspace = true }
-strum = {workspace = true}
+strum = { workspace = true }
+tokio = { workspace = true, optional = true }
+compio = { workspace = true, optional = true }
 
 # hashing
 digest = "0.10.7"
diff --git a/sdgb-api/src/error.rs b/sdgb-api/src/error.rs
index 42e8802..4b37771 100644
--- a/sdgb-api/src/error.rs
+++ b/sdgb-api/src/error.rs
@@ -3,24 +3,36 @@ use snafu::Snafu;
 
 #[derive(Debug, Snafu)]
 pub enum ApiError {
+    JoinError,
+
     #[snafu(display("api returned nothing!"))]
     EmptyResponse,
     #[snafu(display("encrypt data: {error}"))]
-    Pad { error: PadError },
+    Pad {
+        error: PadError,
+    },
     #[snafu(display("decrypt data: {error}"))]
-    Unpad { error: UnpadError },
+    Unpad {
+        error: UnpadError,
+    },
 
     #[snafu(display("io error: {source}"))]
     #[snafu(context(false))]
-    IO { source: std::io::Error },
+    IO {
+        source: std::io::Error,
+    },
 
     #[snafu(display("json error: {source}"))]
     #[snafu(context(false))]
-    JSON { source: serde_json::Error },
+    JSON {
+        source: serde_json::Error,
+    },
 
     #[snafu(display("request error: {source}"))]
     #[snafu(context(false))]
-    Request { source: nyquest::Error },
+    Request {
+        source: nyquest::Error,
+    },
 }
 
 impl From<UnpadError> for ApiError {
diff --git a/sdgb-api/src/title/mod.rs b/sdgb-api/src/title/mod.rs
index f91d32c..49308d1 100644
--- a/sdgb-api/src/title/mod.rs
+++ b/sdgb-api/src/title/mod.rs
@@ -62,16 +62,25 @@ pub trait MaiVersionExt: MaiVersion {
     fn request_raw<D>(
         client: &AsyncClient,
         api: APIMethod,
-        agent_extra: impl Display,
+        agent_extra: impl Display + Send + 'static,
         data: D,
     ) -> impl Future<Output = Result<Vec<u8>, ApiError>>
     where
-        D: Serialize,
+        D: Serialize + Send + 'static,
     {
+        #[cfg(feature = "compio")]
+        use compio::runtime::spawn_blocking;
+        #[cfg(feature = "tokio")]
+        use tokio::task::spawn_blocking;
+
         async {
-            let req = Self::api_call(api, agent_extra, data)?;
+            let req = spawn_blocking(move || Self::api_call(api, agent_extra, data))
+                .await
+                .map_err(|_| ApiError::JoinError)??;
             let data = client.request(req).await?.bytes().await?;
-            let decoded = Self::decode(data)?;
+            let decoded = spawn_blocking(move || Self::decode(data))
+                .await
+                .map_err(|_| ApiError::JoinError)??;
             Ok(decoded)
         }
     }
@@ -79,11 +88,11 @@ pub trait MaiVersionExt: MaiVersion {
     fn request<D, R>(
         client: &AsyncClient,
         api: APIMethod,
-        agent_extra: impl Display,
+        agent_extra: impl Display + Send + 'static,
         data: D,
     ) -> impl Future<Output = Result<R, ApiError>>
     where
-        D: Serialize,
+        D: Serialize + Send + 'static,
         R: for<'a> Deserialize<'a>,
     {
         async {
diff --git a/sdgb-cli/Cargo.toml b/sdgb-cli/Cargo.toml
index 40655cb..ed9c909 100644
--- a/sdgb-cli/Cargo.toml
+++ b/sdgb-cli/Cargo.toml
@@ -5,20 +5,25 @@ edition = "2024"
 authors = ["mokurin000"]
 description = "CLI tool for SDGB protocol"
 
+[features]
+default = ["compio"]
+compio = ["dep:compio", "sdgb-api/compio"]
+tokio = ["dep:tokio", "sdgb-api/tokio"]
+
 [dependencies]
-snafu = { workspace = true }
 sdgb-api = { workspace = true }
+
+snafu = { workspace = true }
 serde_json = { workspace = true }
 strum = { workspace = true }
+tokio = { workspace = true, features = ["macros"], optional = true }
+compio = { workspace = true, features = ["macros"], optional = true }
 
 nyquest-preset = { version = "0.2.0", features = ["async"] }
-compio = { version = "0.15.0", default-features = false, features = [
-    "runtime",
-    "macros",
-] }
 
 palc = { version = "0.0.1", features = ["derive"] }
 spdlog-rs = { version = "0.4.3", default-features = false, features = [
     "level-info",
     "release-level-info",
 ] }
+futures-util = "0.3.31"
diff --git a/sdgb-cli/src/commands.rs b/sdgb-cli/src/commands.rs
index 510d05d..0394874 100644
--- a/sdgb-cli/src/commands.rs
+++ b/sdgb-cli/src/commands.rs
@@ -36,6 +36,9 @@ pub enum Commands {
         #[arg(short, long)]
         user_id: u32,
     },
+
+    ListAllUser,
+
     Logout {
         #[arg(short, long)]
         user_id: u32,
diff --git a/sdgb-cli/src/main.rs b/sdgb-cli/src/main.rs
index b8bc4c2..3a3124a 100644
--- a/sdgb-cli/src/main.rs
+++ b/sdgb-cli/src/main.rs
@@ -1,6 +1,13 @@
+use std::{
+    fs::OpenOptions,
+    io::{BufRead, stdin},
+};
+
+use futures_util::StreamExt;
 use nyquest_preset::nyquest::ClientBuilder;
 use palc::Parser;
 use sdgb_api::{
+    ApiError,
     all_net::QRCode,
     auth_lite::{SDGB, SDHJ, delivery_raw},
     title::{
@@ -12,13 +19,14 @@ use sdgb_api::{
         },
     },
 };
-use spdlog::{error, info};
+use spdlog::{error, info, warn};
 
 use crate::commands::Cli;
 
 mod commands;
 
-#[compio::main]
+#[cfg_attr(feature = "compio", compio::main)]
+#[cfg_attr(feature = "tokio", tokio::main)]
 async fn main() -> Result<(), Box<dyn snafu::Error>> {
     nyquest_preset::register();
     let cmd = <Cli as Parser>::parse();
@@ -78,6 +86,55 @@ async fn main() -> Result<(), Box<dyn snafu::Error>> {
             };
             println!("{}", String::from_utf8_lossy(&resp));
         }
+
+        commands::Commands::ListAllUser => {
+            let mut stdin = stdin().lock();
+            let mut buf = String::new();
+            let mut user_ids = Vec::new();
+
+            while stdin.read_line(&mut buf).is_ok_and(|size| size != 0) {
+                if buf.is_empty() {
+                    continue;
+                }
+
+                let user_id: u32 = buf.trim().parse()?;
+                buf.clear();
+                user_ids.push(user_id);
+            }
+
+            let users = futures_util::stream::iter(user_ids)
+                .map(async |user_id| {
+                    info!("preview: {user_id}");
+                    let resp = Sdgb1_50::request::<_, GetUserPreviewApiResp>(
+                        &client,
+                        APIMethod::GetUserPreviewApi,
+                        user_id,
+                        GetUserPreviewApi { user_id },
+                    )
+                    .await;
+
+                    if let Err(e) = &resp {
+                        if matches!(e, ApiError::JSON { .. }) {
+                            warn!("account unregistered: {user_id}");
+                        } else {
+                            error!("preview failed: {e}");
+                        }
+                    }
+
+                    resp
+                })
+                .buffer_unordered(20)
+                .filter_map(async |r| r.ok())
+                .collect::<Vec<_>>()
+                .await;
+
+            let output = OpenOptions::new()
+                .write(true)
+                .truncate(true)
+                .create(true)
+                .open("users.json")?;
+            serde_json::to_writer_pretty(output, &users)?;
+        }
     }
 
     Ok(())