diff --git a/Cargo.lock b/Cargo.lock
index e0c301e..34d4ec6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -26,6 +26,21 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "android-tzdata"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.80"
@@ -51,13 +66,19 @@ checksum = "26b05800d2e817c8b3b4b54abd461726265fa9789ae34330622f2db9ee696f9d"
 dependencies = [
  "addr2line",
  "cc",
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
  "miniz_oxide",
  "object",
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -71,21 +92,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
 
 [[package]]
-name = "byteorder"
-version = "1.5.0"
+name = "bumpalo"
+version = "3.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
-
-[[package]]
-name = "bytes"
-version = "0.4.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "206fdffcfa2df7cbe15601ef46c813fce0965eb3286db6b56c583b814b51c81c"
-dependencies = [
- "byteorder",
- "either",
- "iovec",
-]
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
 [[package]]
 name = "bytes"
@@ -99,12 +109,6 @@ version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d32a725bc159af97c3e629873bb9f88fb8cf8a4867175f76dc987815ea07c83b"
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -112,12 +116,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
-name = "cloudabi"
-version = "0.0.3"
+name = "chrono"
+version = "0.4.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
+checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
 dependencies = [
- "bitflags 1.3.2",
+ "android-tzdata",
+ "iana-time-zone",
+ "js-sys",
+ "num-traits",
+ "wasm-bindgen",
+ "windows-targets 0.52.4",
 ]
 
 [[package]]
@@ -136,54 +145,6 @@ version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
 
-[[package]]
-name = "crossbeam-deque"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c20ff29ded3204c5106278a81a38f4b482636ed4fa1e6cfbeef193291beb29ed"
-dependencies = [
- "crossbeam-epoch",
- "crossbeam-utils",
- "maybe-uninit",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
-dependencies = [
- "autocfg",
- "cfg-if 0.1.10",
- "crossbeam-utils",
- "lazy_static",
- "maybe-uninit",
- "memoffset",
- "scopeguard",
-]
-
-[[package]]
-name = "crossbeam-queue"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "774ba60a54c213d409d5353bda12d49cd68d14e45036a285234c8d6f91f92570"
-dependencies = [
- "cfg-if 0.1.10",
- "crossbeam-utils",
- "maybe-uninit",
-]
-
-[[package]]
-name = "crossbeam-utils"
-version = "0.7.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
-dependencies = [
- "autocfg",
- "cfg-if 0.1.10",
- "lazy_static",
-]
-
 [[package]]
 name = "ctor"
 version = "0.2.8"
@@ -204,12 +165,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "either"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dca9240753cf90908d7e4aac30f630662b02aebaa1b58a3cadabdb23385b58b"
-
 [[package]]
 name = "env_logger"
 version = "0.10.2"
@@ -266,28 +221,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
-[[package]]
-name = "fuchsia-zircon"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
-dependencies = [
- "bitflags 1.3.2",
- "fuchsia-zircon-sys",
-]
-
-[[package]]
-name = "fuchsia-zircon-sys"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-
-[[package]]
-name = "futures"
-version = "0.1.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a471a38ef8ed83cd6e40aa59c1ffe17db6855c18e3604d9c4ed8c08ebc28678"
-
 [[package]]
 name = "futures-channel"
 version = "0.3.30"
@@ -303,16 +236,6 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
 
-[[package]]
-name = "futures-cpupool"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
-dependencies = [
- "futures",
- "num_cpus",
-]
-
 [[package]]
 name = "futures-sink"
 version = "0.3.30"
@@ -343,9 +266,9 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
 ]
 
 [[package]]
@@ -354,49 +277,25 @@ version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
 
-[[package]]
-name = "h2"
-version = "0.1.26"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5b34c246847f938a410a03c5458c7fee2274436675e76d8b903c08efc29c462"
-dependencies = [
- "byteorder",
- "bytes 0.4.12",
- "fnv",
- "futures",
- "http 0.1.21",
- "indexmap 1.9.3",
- "log",
- "slab",
- "string",
- "tokio-io",
-]
-
 [[package]]
 name = "h2"
 version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "81fe527a889e1532da5c525686d96d4c2e74cdd345badf8dfef9f6b39dd5f5e8"
 dependencies = [
- "bytes 1.6.0",
+ "bytes",
  "fnv",
  "futures-core",
  "futures-sink",
  "futures-util",
- "http 0.2.12",
- "indexmap 2.2.6",
+ "http",
+ "indexmap",
  "slab",
- "tokio 1.37.0",
+ "tokio",
  "tokio-util",
  "tracing",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-
 [[package]]
 name = "hashbrown"
 version = "0.14.3"
@@ -409,49 +308,15 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
 
-[[package]]
-name = "http"
-version = "0.1.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6ccf5ede3a895d8856620237b2f02972c1bbc78d2965ad7fe8838d4a0ed41f0"
-dependencies = [
- "bytes 0.4.12",
- "fnv",
- "itoa 0.4.8",
-]
-
 [[package]]
 name = "http"
 version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "601cbb57e577e2f5ef5be8e7b83f0f63994f25aa94d673e54a92d5c516d101f1"
 dependencies = [
- "bytes 1.6.0",
+ "bytes",
  "fnv",
- "itoa 1.0.11",
-]
-
-[[package]]
-name = "http"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
-dependencies = [
- "bytes 1.6.0",
- "fnv",
- "itoa 1.0.11",
-]
-
-[[package]]
-name = "http-body"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6741c859c1b2463a423a1dbce98d418e6c3c3fc720fb0d45528657320920292d"
-dependencies = [
- "bytes 0.4.12",
- "futures",
- "http 0.1.21",
- "tokio-buf",
+ "itoa",
 ]
 
 [[package]]
@@ -460,44 +325,11 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ceab25649e9960c0311ea418d17bee82c0dcec1bd053b5f9a66e265a693bed2"
 dependencies = [
- "bytes 1.6.0",
- "http 0.2.12",
+ "bytes",
+ "http",
  "pin-project-lite",
 ]
 
-[[package]]
-name = "http-body"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cac85db508abc24a2e48553ba12a996e87244a0395ce011e62b37158745d643"
-dependencies = [
- "bytes 1.6.0",
- "http 1.1.0",
-]
-
-[[package]]
-name = "http-body-util"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
-dependencies = [
- "bytes 1.6.0",
- "futures-core",
- "http 1.1.0",
- "http-body 1.0.0",
- "pin-project-lite",
-]
-
-[[package]]
-name = "http-connection"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f6080cea47f7371d4da9a46dd52787c598ce93886393e400bc178f9039bac27"
-dependencies = [
- "http 0.1.21",
- "tokio-tcp",
-]
-
 [[package]]
 name = "httparse"
 version = "1.8.0"
@@ -516,58 +348,28 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
-[[package]]
-name = "hyper"
-version = "0.12.36"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c843caf6296fc1f93444735205af9ed4e109a539005abb2564ae1d6fad34c52"
-dependencies = [
- "bytes 0.4.12",
- "futures",
- "futures-cpupool",
- "h2 0.1.26",
- "http 0.1.21",
- "http-body 0.1.0",
- "httparse",
- "iovec",
- "itoa 0.4.8",
- "log",
- "net2",
- "rustc_version",
- "time 0.1.45",
- "tokio 0.1.22",
- "tokio-buf",
- "tokio-executor",
- "tokio-io",
- "tokio-reactor",
- "tokio-tcp",
- "tokio-threadpool",
- "tokio-timer",
- "want 0.2.0",
-]
-
 [[package]]
 name = "hyper"
 version = "0.14.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf96e135eb83a2a8ddf766e426a841d8ddd7449d5f00d34ea02b41d2f19eef80"
 dependencies = [
- "bytes 1.6.0",
+ "bytes",
  "futures-channel",
  "futures-core",
  "futures-util",
- "h2 0.3.26",
- "http 0.2.12",
- "http-body 0.4.6",
+ "h2",
+ "http",
+ "http-body",
  "httparse",
  "httpdate",
- "itoa 1.0.11",
+ "itoa",
  "pin-project-lite",
  "socket2",
- "tokio 1.37.0",
- "tower-service 0.3.2",
+ "tokio",
+ "tower-service",
  "tracing",
- "want 0.3.1",
+ "want",
 ]
 
 [[package]]
@@ -576,21 +378,34 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
 dependencies = [
- "bytes 1.6.0",
- "hyper 0.14.28",
+ "bytes",
+ "hyper",
  "native-tls",
- "tokio 1.37.0",
+ "tokio",
  "tokio-native-tls",
 ]
 
 [[package]]
-name = "indexmap"
-version = "1.9.3"
+name = "iana-time-zone"
+version = "0.1.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+checksum = "e7ffbb5a1b541ea2561f8c41c087286cc091e21e556a4f09a8f6cbf17b69b141"
 dependencies = [
- "autocfg",
- "hashbrown 0.12.3",
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "windows-core",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
 ]
 
 [[package]]
@@ -600,16 +415,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
  "equivalent",
- "hashbrown 0.14.3",
-]
-
-[[package]]
-name = "iovec"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
-dependencies = [
- "libc",
+ "hashbrown",
 ]
 
 [[package]]
@@ -623,12 +429,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "itoa"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
-
 [[package]]
 name = "itoa"
 version = "1.0.11"
@@ -636,13 +436,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
 [[package]]
-name = "kernel32-sys"
-version = "0.2.2"
+name = "js-sys"
+version = "0.3.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
+checksum = "29c15563dc2726973df627357ce0c9ddddbea194836909d655df6a75d2cf296d"
 dependencies = [
- "winapi 0.2.8",
- "winapi-build",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -650,19 +449,18 @@ name = "kordophone"
 version = "0.1.0"
 dependencies = [
  "async-trait",
+ "base64",
+ "chrono",
  "ctor",
- "hyper 0.14.28",
+ "hyper",
  "hyper-tls",
  "log",
  "pretty_env_logger",
  "serde",
  "serde_json",
  "serde_plain",
- "time 0.3.36",
- "tokio 1.37.0",
- "tower",
- "tower-http",
- "tower-hyper",
+ "time",
+ "tokio",
  "uuid",
 ]
 
@@ -684,15 +482,6 @@ version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "01cda141df6706de531b6c46c3a33ecca755538219bd484262fa09410c13539c"
 
-[[package]]
-name = "lock_api"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4da24a77a3d8a6d4862d95f72e6fdb9c09a643ecdb402d754004a557f2bec75"
-dependencies = [
- "scopeguard",
-]
-
 [[package]]
 name = "lock_api"
 version = "0.4.11"
@@ -709,27 +498,12 @@ version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
-[[package]]
-name = "maybe-uninit"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
-
 [[package]]
 name = "memchr"
 version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
 
-[[package]]
-name = "memoffset"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "043175f069eda7b85febe4a74abbaeff828d9f8b448515d3151a14a3542811aa"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "miniz_oxide"
 version = "0.7.2"
@@ -739,25 +513,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "mio"
-version = "0.6.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4afd66f5b91bf2a3bc13fad0e21caedac168ca4c707504e75585648ae80e4cc4"
-dependencies = [
- "cfg-if 0.1.10",
- "fuchsia-zircon",
- "fuchsia-zircon-sys",
- "iovec",
- "kernel32-sys",
- "libc",
- "log",
- "miow",
- "net2",
- "slab",
- "winapi 0.2.8",
-]
-
 [[package]]
 name = "mio"
 version = "0.8.11"
@@ -765,22 +520,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4a650543ca06a924e8b371db273b2756685faae30f8487da1b56505a8f78b0c"
 dependencies = [
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "miow"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebd808424166322d4a38da87083bfddd3ac4c131334ed55856112eb06d46944d"
-dependencies = [
- "kernel32-sys",
- "net2",
- "winapi 0.2.8",
- "ws2_32-sys",
-]
-
 [[package]]
 name = "native-tls"
 version = "0.2.11"
@@ -799,23 +542,21 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "net2"
-version = "0.2.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b13b648036a2339d06de780866fbdfda0dde886de7b3af2ddeba8b14f4ee34ac"
-dependencies = [
- "cfg-if 0.1.10",
- "libc",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "num-conv"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.16.0"
@@ -848,7 +589,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
 dependencies = [
  "bitflags 2.5.0",
- "cfg-if 1.0.0",
+ "cfg-if",
  "foreign-types",
  "libc",
  "once_cell",
@@ -885,40 +626,14 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "parking_lot"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f842b1982eb6c2fe34036a4fbfb06dd185a3f5c8edfaacdf7d1ea10b07de6252"
-dependencies = [
- "lock_api 0.3.4",
- "parking_lot_core 0.6.3",
- "rustc_version",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
 dependencies = [
- "lock_api 0.4.11",
- "parking_lot_core 0.9.9",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bda66b810a62be75176a80873726630147a5ca780cd33921e0b5709033e66b0a"
-dependencies = [
- "cfg-if 0.1.10",
- "cloudabi",
- "libc",
- "redox_syscall 0.1.57",
- "rustc_version",
- "smallvec 0.6.14",
- "winapi 0.3.9",
+ "lock_api",
+ "parking_lot_core",
 ]
 
 [[package]]
@@ -927,10 +642,10 @@ version = "0.9.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c42a9226546d68acdd9c0a280d17ce19bfe27a46bf68784e4066115788d008e"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
- "redox_syscall 0.4.1",
- "smallvec 1.11.2",
+ "redox_syscall",
+ "smallvec",
  "windows-targets 0.48.5",
 ]
 
@@ -1022,12 +737,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.1.57"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
-
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -1072,15 +781,6 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-dependencies = [
- "semver",
-]
-
 [[package]]
 name = "rustix"
 version = "0.38.34"
@@ -1138,21 +838,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "semver"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
-dependencies = [
- "semver-parser",
-]
-
-[[package]]
-name = "semver-parser"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-
 [[package]]
 name = "serde"
 version = "1.0.198"
@@ -1179,7 +864,7 @@ version = "1.0.116"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e17db7126d17feb94eb3fad46bf1a96b034e8aacbc2e775fe81505f8b0b2813"
 dependencies = [
- "itoa 1.0.11",
+ "itoa",
  "ryu",
  "serde",
 ]
@@ -1211,15 +896,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "smallvec"
-version = "0.6.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97fcaeba89edba30f044a10c6a3cc39df9c3f17d7cd829dd1446cab35f890e0"
-dependencies = [
- "maybe-uninit",
-]
-
 [[package]]
 name = "smallvec"
 version = "1.11.2"
@@ -1236,15 +912,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "string"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d24114bfcceb867ca7f71a0d3fe45d45619ec47a6fbfa98cb14e14250bfa5d6d"
-dependencies = [
- "bytes 0.4.12",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.60"
@@ -1262,7 +929,7 @@ version = "3.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "fastrand",
  "rustix",
  "windows-sys 0.52.0",
@@ -1277,17 +944,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b797afad3f312d1c66a56d11d0316f916356d11bd158fbc6ca6389ff6bf805a"
-dependencies = [
- "libc",
- "wasi 0.10.0+wasi-snapshot-preview1",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "time"
 version = "0.3.36"
@@ -1318,24 +974,6 @@ dependencies = [
  "time-core",
 ]
 
-[[package]]
-name = "tokio"
-version = "0.1.22"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a09c0b5bb588872ab2f09afa13ee6e9dac11e10a0ec9e8e3ba39a5a5d530af6"
-dependencies = [
- "bytes 0.4.12",
- "futures",
- "mio 0.6.23",
- "num_cpus",
- "tokio-current-thread",
- "tokio-executor",
- "tokio-io",
- "tokio-reactor",
- "tokio-threadpool",
- "tokio-timer",
-]
-
 [[package]]
 name = "tokio"
 version = "1.37.0"
@@ -1343,11 +981,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1adbebffeca75fcfd058afa480fb6c0b81e165a0323f9c9d39c9697e37c46787"
 dependencies = [
  "backtrace",
- "bytes 1.6.0",
+ "bytes",
  "libc",
- "mio 0.8.11",
+ "mio",
  "num_cpus",
- "parking_lot 0.12.1",
+ "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
  "socket2",
@@ -1355,48 +993,6 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "tokio-buf"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fb220f46c53859a4b7ec083e41dec9778ff0b1851c0942b211edb89e0ccdc46"
-dependencies = [
- "bytes 0.4.12",
- "either",
- "futures",
-]
-
-[[package]]
-name = "tokio-current-thread"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1de0e32a83f131e002238d7ccde18211c0a5397f60cbfffcb112868c2e0e20e"
-dependencies = [
- "futures",
- "tokio-executor",
-]
-
-[[package]]
-name = "tokio-executor"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb2d1b8f4548dbf5e1f7818512e9c406860678f29c300cdf0ebac72d1a3a1671"
-dependencies = [
- "crossbeam-utils",
- "futures",
-]
-
-[[package]]
-name = "tokio-io"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57fc868aae093479e3131e3d165c93b1c7474109d13c90ec0dda2a1bbfff0674"
-dependencies = [
- "bytes 0.4.12",
- "futures",
- "log",
-]
-
 [[package]]
 name = "tokio-macros"
 version = "2.2.0"
@@ -1415,79 +1011,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbae76ab933c85776efabc971569dd6119c580d8f5d448769dec1764bf796ef2"
 dependencies = [
  "native-tls",
- "tokio 1.37.0",
-]
-
-[[package]]
-name = "tokio-reactor"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09bc590ec4ba8ba87652da2068d150dcada2cfa2e07faae270a5e0409aa51351"
-dependencies = [
- "crossbeam-utils",
- "futures",
- "lazy_static",
- "log",
- "mio 0.6.23",
- "num_cpus",
- "parking_lot 0.9.0",
- "slab",
- "tokio-executor",
- "tokio-io",
- "tokio-sync",
-]
-
-[[package]]
-name = "tokio-sync"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edfe50152bc8164fcc456dab7891fa9bf8beaf01c5ee7e1dd43a397c3cf87dee"
-dependencies = [
- "fnv",
- "futures",
-]
-
-[[package]]
-name = "tokio-tcp"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98df18ed66e3b72e742f185882a9e201892407957e45fbff8da17ae7a7c51f72"
-dependencies = [
- "bytes 0.4.12",
- "futures",
- "iovec",
- "mio 0.6.23",
- "tokio-io",
- "tokio-reactor",
-]
-
-[[package]]
-name = "tokio-threadpool"
-version = "0.1.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df720b6581784c118f0eb4310796b12b1d242a7eb95f716a8367855325c25f89"
-dependencies = [
- "crossbeam-deque",
- "crossbeam-queue",
- "crossbeam-utils",
- "futures",
- "lazy_static",
- "log",
- "num_cpus",
- "slab",
- "tokio-executor",
-]
-
-[[package]]
-name = "tokio-timer"
-version = "0.2.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93044f2d313c95ff1cb7809ce9a7a05735b012288a888b62d4434fd58c94f296"
-dependencies = [
- "crossbeam-utils",
- "futures",
- "slab",
- "tokio-executor",
+ "tokio",
 ]
 
 [[package]]
@@ -1496,126 +1020,26 @@ version = "0.7.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5419f34732d9eb6ee4c3578b7989078579b7f039cbbb9ca2c4da015749371e15"
 dependencies = [
- "bytes 1.6.0",
+ "bytes",
  "futures-core",
  "futures-sink",
  "pin-project-lite",
- "tokio 1.37.0",
+ "tokio",
  "tracing",
 ]
 
-[[package]]
-name = "tower"
-version = "0.4.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
-dependencies = [
- "tower-layer 0.3.2",
- "tower-service 0.3.2",
- "tracing",
-]
-
-[[package]]
-name = "tower-http"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
-dependencies = [
- "bitflags 2.5.0",
- "bytes 1.6.0",
- "http 1.1.0",
- "http-body 1.0.0",
- "http-body-util",
- "pin-project-lite",
- "tower-layer 0.3.2",
- "tower-service 0.3.2",
- "tracing",
-]
-
-[[package]]
-name = "tower-http-util"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "442ba79e23bda499cdaa5ee52b3776bf08cb84a1d5ca6d3d82bfd4f12c1eefc3"
-dependencies = [
- "futures",
- "http 0.1.21",
- "http-body 0.1.0",
- "http-connection",
- "tokio-buf",
- "tokio-io",
- "tower-service 0.2.0",
-]
-
-[[package]]
-name = "tower-hyper"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cff60538bc14baa9cc84fbe4c040d498163daf23bc9846a9aef0e2e40dcc1d51"
-dependencies = [
- "futures",
- "http 0.1.21",
- "http-body 0.1.0",
- "http-connection",
- "hyper 0.12.36",
- "log",
- "tokio-buf",
- "tokio-executor",
- "tokio-io",
- "tower-http-util",
- "tower-service 0.2.0",
- "tower-util",
-]
-
-[[package]]
-name = "tower-layer"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ddf07e10c07dcc8f41da6de036dc66def1a85b70eb8a385159e3908bb258328"
-dependencies = [
- "futures",
- "tower-service 0.2.0",
-]
-
-[[package]]
-name = "tower-layer"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
-
-[[package]]
-name = "tower-service"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cc0c98637d23732f8de6dfd16494c9f1559c3b9e20b4a46462c8f9b9e827bfa"
-dependencies = [
- "futures",
-]
-
 [[package]]
 name = "tower-service"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
 
-[[package]]
-name = "tower-util"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4792342fac093db5d2558655055a89a04ca909663467a4310c7739d9f8b64698"
-dependencies = [
- "futures",
- "tower-layer 0.1.0",
- "tower-service 0.2.0",
-]
-
 [[package]]
 name = "tracing"
 version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
- "log",
  "pin-project-lite",
  "tracing-core",
 ]
@@ -1669,17 +1093,6 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
-[[package]]
-name = "want"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
-dependencies = [
- "futures",
- "log",
- "try-lock",
-]
-
 [[package]]
 name = "want"
 version = "0.3.1"
@@ -1689,12 +1102,6 @@ dependencies = [
  "try-lock",
 ]
 
-[[package]]
-name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -1702,32 +1109,58 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
-name = "winapi"
-version = "0.2.8"
+name = "wasm-bindgen"
+version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
-
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
 dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
+ "cfg-if",
+ "wasm-bindgen-macro",
 ]
 
 [[package]]
-name = "winapi-build"
-version = "0.1.1"
+name = "wasm-bindgen-backend"
+version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
 
 [[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
+name = "wasm-bindgen-macro"
+version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
 
 [[package]]
 name = "winapi-util"
@@ -1739,10 +1172,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
+name = "windows-core"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets 0.52.4",
+]
 
 [[package]]
 name = "windows-sys"
@@ -1875,13 +1311,3 @@ name = "windows_x86_64_msvc"
 version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
-
-[[package]]
-name = "ws2_32-sys"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
diff --git a/kordophone/Cargo.toml b/kordophone/Cargo.toml
index c527300..cc21210 100644
--- a/kordophone/Cargo.toml
+++ b/kordophone/Cargo.toml
@@ -7,6 +7,8 @@ edition = "2021"
 
 [dependencies]
 async-trait = "0.1.80"
+base64 = "0.22.1"
+chrono = "0.4.38"
 ctor = "0.2.8"
 hyper = { version = "0.14", features = ["full"] }
 hyper-tls = "0.5.0"
@@ -17,7 +19,4 @@ serde_json = "1.0.91"
 serde_plain = "1.0.2"
 time = { version = "0.3.17", features = ["parsing", "serde"] }
 tokio = { version = "1.37.0", features = ["full"] }
-tower = "0.4.13"
-tower-http = { version = "0.5.2", features = ["trace"] }
-tower-hyper = "0.1.1"
 uuid = { version = "1.6.1", features = ["v4", "fast-rng", "macro-diagnostics"] }
diff --git a/kordophone/src/api/http_client.rs b/kordophone/src/api/http_client.rs
index 96b5c91..c500715 100644
--- a/kordophone/src/api/http_client.rs
+++ b/kordophone/src/api/http_client.rs
@@ -1,24 +1,31 @@
 extern crate hyper;
 extern crate serde;
 
-use std::{path::PathBuf, str};
+use std::{borrow::Cow, default, path::PathBuf, str};
 use log::{error};
 
-use hyper::{Body, Client, Method, Request, Uri};
-use tower::{ServiceBuilder};
+use hyper::{client::ResponseFuture, Body, Client, Method, Request, Uri};
 
 use async_trait::async_trait;
-use serde::de::DeserializeOwned;
+use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
-use crate::{APIInterface, model::Conversation};
+use crate::{model::{Conversation, JwtToken}, APIInterface};
 
 type HttpClient = Client<hyper::client::HttpConnector>;
 
-pub struct HTTPClient {
+pub struct HTTPAPIClient {
     pub base_url: Uri,
+    credentials: Option<Credentials>,
+    auth_token: Option<JwtToken>,
     client: HttpClient,
 }
 
+#[derive(Clone, Serialize, Deserialize, Debug)]
+pub struct Credentials {
+    pub username: String,
+    pub password: String,
+}
+
 #[derive(Debug)]
 pub enum Error {
     ClientError(String),
@@ -39,29 +46,65 @@ impl From <serde_json::Error> for Error {
     }
 }
 
+trait AuthBuilder {
+    fn with_auth(self, token: &Option<JwtToken>) -> Self;
+}
+
+impl AuthBuilder for hyper::http::request::Builder {
+    fn with_auth(self, token: &Option<JwtToken>) -> Self {
+        if let Some(token) = &token {
+            self.header("Authorization", token.to_header_value())
+        } else { self }
+    }
+}
+
+trait AuthSetting {
+    fn authenticate(&mut self, token: &Option<JwtToken>);
+}
+
+impl<B> AuthSetting for hyper::http::Request<B> {
+    fn authenticate(&mut self, token: &Option<JwtToken>) {
+        if let Some(token) = &token {
+            self.headers_mut().insert("Authorization", token.to_header_value());
+        }
+    }
+}
+
 #[async_trait]
-impl APIInterface for HTTPClient {
+impl APIInterface for HTTPAPIClient {
     type Error = Error;
 
-    async fn get_version(&self) -> Result<String, Self::Error> {
+    async fn get_version(&mut self) -> Result<String, Self::Error> {
         let version: String = self.request("/version", Method::GET).await?;
         Ok(version)
     }
 
-    async fn get_conversations(&self) -> Result<Vec<Conversation>, Self::Error> {
+    async fn get_conversations(&mut self) -> Result<Vec<Conversation>, Self::Error> {
         let conversations: Vec<Conversation> = self.request("/conversations", Method::GET).await?;
         Ok(conversations)
     }
+
+    async fn authenticate(&mut self, credentials: Credentials) -> Result<JwtToken, Self::Error> {
+        #[derive(Deserialize, Debug)]
+        struct AuthResponse {
+            jwt: String,
+        }
+
+        let body = || -> Body { serde_json::to_string(&credentials).unwrap().into() };
+        let token: AuthResponse = self.request_with_body_retry("/authenticate", Method::POST, body, false).await?;
+        let token = JwtToken::new(&token.jwt).map_err(|_| Error::DecodeError)?;
+        self.auth_token = Some(token.clone());
+        Ok(token)
+    }
 }
 
-impl HTTPClient {
-    pub fn new(base_url: Uri) -> HTTPClient {
-        let client = ServiceBuilder::new()
-            .service(Client::new());
-
-        HTTPClient { 
-            base_url,
-            client, 
+impl HTTPAPIClient {
+    pub fn new(base_url: Uri, credentials: Option<Credentials>) -> HTTPAPIClient {
+        HTTPAPIClient { 
+            base_url: base_url,
+            credentials: credentials,
+            auth_token: Option::None,
+            client: Client::new(),
         }
     }
 
@@ -74,29 +117,67 @@ impl HTTPClient {
         Uri::try_from(parts).unwrap()
     }
 
-    async fn request<T: DeserializeOwned>(&self, endpoint: &str, method: Method) -> Result<T, Error> {
-        self.request_with_body(endpoint, method, Body::empty()).await
+    async fn request<T: DeserializeOwned>(&mut self, endpoint: &str, method: Method) -> Result<T, Error> {
+        self.request_with_body(endpoint, method, || { Body::empty() }).await
     }
 
-    async fn request_with_body<T: DeserializeOwned>(&self, endpoint: &str, method: Method, body: Body) -> Result<T, Error> {
+    async fn request_with_body<T, B>(&mut self, endpoint: &str, method: Method, body_fn: B) -> Result<T, Error> 
+        where T: DeserializeOwned, B: Fn() -> Body 
+    {
+        self.request_with_body_retry(endpoint, method, body_fn, true).await
+    }
+
+    async fn request_with_body_retry<T, B>(
+        &mut self, 
+        endpoint: &str, 
+        method: Method, 
+        body_fn: B, 
+        retry_auth: bool) -> Result<T, Error>
+    where 
+        T: DeserializeOwned, 
+        B: Fn() -> Body
+    {
+        use hyper::StatusCode;
+
         let uri = self.uri_for_endpoint(endpoint);
-        let request = Request::builder()
-            .method(method)
-            .uri(uri)
-            .body(body)
-            .unwrap();
+        let build_request = move |auth: &Option<JwtToken>| {
+            let body = body_fn();
+            Request::builder()
+                .method(&method)
+                .uri(&uri)
+                .with_auth(auth)
+                .body(body)
+                .expect("Unable to build request")
+        };
 
-        let future = self.client.request(request);
-        let res = future.await?;
-        let status = res.status();
+        let request = build_request(&self.auth_token);
+        let mut response = self.client.request(request).await?;
+        match response.status() {
+            StatusCode::OK => { /* cool */ },
 
-        if status != hyper::StatusCode::OK {
-            let message = format!("Request failed ({:})", status);
-            return Err(Error::ClientError(message));
+            // 401: Unauthorized. Token may have expired or is invalid. Attempt to renew. 
+            StatusCode::UNAUTHORIZED => {
+                if !retry_auth {
+                    return Err(Error::ClientError("Unauthorized".into()));
+                }
+
+                if let Some(credentials) = &self.credentials {
+                    self.authenticate(credentials.clone()).await?;
+
+                    let request = build_request(&self.auth_token);
+                    response = self.client.request(request).await?;
+                }
+            },
+
+            // Other errors: bubble up. 
+            _ => {
+                let message = format!("Request failed ({:})", response.status());
+                return Err(Error::ClientError(message));    
+            }
         }
 
         // Read and parse response body
-        let body = hyper::body::to_bytes(res.into_body()).await?;
+        let body = hyper::body::to_bytes(response.into_body()).await?;
         let parsed: T = match serde_json::from_slice(&body) {
             Ok(result) => Ok(result),
             Err(json_err) => {
@@ -121,13 +202,18 @@ mod test {
         log::set_max_level(log::LevelFilter::Trace);
     }
 
-    fn local_mock_client() -> HTTPClient {
+    fn local_mock_client() -> HTTPAPIClient {
         let base_url = "http://localhost:5738".parse().unwrap();
-        HTTPClient::new(base_url)
+        let credentials = Credentials { 
+            username: "test".to_string(),
+            password: "test".to_string(),
+        };
+
+        HTTPAPIClient::new(base_url, credentials.into())
     }
 
     async fn mock_client_is_reachable() -> bool {
-        let client = local_mock_client();
+        let mut client = local_mock_client();
         let version = client.get_version().await;
 
         match version {
@@ -146,7 +232,7 @@ mod test {
             return;
         }
 
-        let client = local_mock_client();
+        let mut client = local_mock_client();
         let version = client.get_version().await.unwrap();
         assert!(version.starts_with("KordophoneMock-"));
     }
@@ -158,7 +244,7 @@ mod test {
             return;
         }
 
-        let client = local_mock_client();
+        let mut client = local_mock_client();
         let conversations = client.get_conversations().await.unwrap();
         assert!(!conversations.is_empty());
     }
diff --git a/kordophone/src/api/mod.rs b/kordophone/src/api/mod.rs
index da28032..0cd5c99 100644
--- a/kordophone/src/api/mod.rs
+++ b/kordophone/src/api/mod.rs
@@ -1,17 +1,23 @@
 use async_trait::async_trait;
 pub use crate::model::Conversation;
+use crate::model::JwtToken;
 
 pub mod http_client;
-pub use http_client::HTTPClient;
+pub use http_client::HTTPAPIClient;
+
+use self::http_client::Credentials;
 
 #[async_trait]
 pub trait APIInterface {
     type Error;
 
     // (GET) /version
-    async fn get_version(&self) -> Result<String, Self::Error>;
+    async fn get_version(&mut self) -> Result<String, Self::Error>;
     
     // (GET) /conversations
-    async fn get_conversations(&self) -> Result<Vec<Conversation>, Self::Error>;
+    async fn get_conversations(&mut self) -> Result<Vec<Conversation>, Self::Error>;
+
+    // (POST) /authenticate
+    async fn authenticate(&mut self, credentials: Credentials) -> Result<JwtToken, Self::Error>;
 }
 
diff --git a/kordophone/src/model/jwt.rs b/kordophone/src/model/jwt.rs
new file mode 100644
index 0000000..6810c2e
--- /dev/null
+++ b/kordophone/src/model/jwt.rs
@@ -0,0 +1,112 @@
+use std::error::Error;
+
+use base64::{
+    engine::{self, general_purpose},
+    Engine,
+};
+
+use chrono::{DateTime, Utc};
+use hyper::http::HeaderValue;
+use serde::Deserialize;
+
+#[derive(Deserialize, Debug, Clone)]
+struct JwtHeader {
+    alg: String,
+    typ: String,
+}
+
+#[derive(Deserialize, Debug, Clone)]
+enum ExpValue {
+    Integer(i64),
+    String(String),
+}
+
+#[derive(Deserialize, Debug, Clone)]
+struct JwtPayload {
+    exp: serde_json::Value,
+    iss: Option<String>,
+    user: Option<String>,
+}
+
+#[derive(Debug, Clone)]
+pub struct JwtToken {
+    header: JwtHeader,
+    payload: JwtPayload,
+    signature: Vec<u8>,
+    expiration_date: DateTime<Utc>,
+    token: String,
+}
+
+impl JwtToken {
+    fn decode_token_using_engine(
+        token: &str,
+        engine: engine::GeneralPurpose,
+    ) -> Result<Self, Box<dyn Error + Send + Sync>> {
+        let mut parts = token.split('.');
+        let header = parts.next().unwrap();
+        let payload = parts.next().unwrap();
+        let signature = parts.next().unwrap();
+
+        let header = engine.decode(header)?;
+        let payload = engine.decode(payload)?;
+        let signature = engine.decode(signature)?;
+
+        // Parse jwt header
+        let header: JwtHeader = serde_json::from_slice(&header)?;
+
+        // Parse jwt payload
+        let payload: JwtPayload = serde_json::from_slice(&payload)?;
+
+        // Parse jwt expiration date
+        // Annoyingly, because of my own fault, this could be either an integer or string.
+        let exp: i64 = payload.exp.as_i64().unwrap_or_else(|| {
+            let exp: String = payload.exp.as_str().unwrap().to_string();
+            exp.parse().unwrap()
+        });
+
+        let timestamp = chrono::NaiveDateTime::from_timestamp_opt(exp, 0).unwrap();
+        let expiration_date = DateTime::<Utc>::from_utc(timestamp, Utc);
+
+        Ok(JwtToken {
+            header,
+            payload,
+            signature,
+            expiration_date,
+            token: token.to_string(),
+        })
+    }
+
+    pub fn new(token: &str) -> Result<Self, Box<dyn Error + Send + Sync>> {
+        // STUPID: My mock server uses a different encoding than the real server, so we have to
+        // try both encodings here.
+
+        Self::decode_token_using_engine(token, general_purpose::STANDARD).or(
+            Self::decode_token_using_engine(token, general_purpose::URL_SAFE_NO_PAD),
+        )
+    }
+
+    pub fn dummy() -> Self {
+        JwtToken {
+            header: JwtHeader {
+                alg: "none".to_string(),
+                typ: "JWT".to_string(),
+            },
+            payload: JwtPayload {
+                exp: serde_json::Value::Null,
+                iss: None,
+                user: None,
+            },
+            signature: vec![],
+            expiration_date: Utc::now(),
+            token: "".to_string(),
+        }
+    }
+
+    pub fn is_valid(&self) -> bool {
+        self.expiration_date > Utc::now()
+    }
+
+    pub fn to_header_value(&self) -> HeaderValue {
+        format!("Bearer {}", self.token).parse().unwrap()
+    }
+}
diff --git a/kordophone/src/model/mod.rs b/kordophone/src/model/mod.rs
index 291ac75..92607cd 100644
--- a/kordophone/src/model/mod.rs
+++ b/kordophone/src/model/mod.rs
@@ -1,3 +1,5 @@
-
 pub mod conversation;
 pub use conversation::Conversation;
+
+pub mod jwt;
+pub use jwt::JwtToken;
\ No newline at end of file
diff --git a/kordophone/src/tests/mod.rs b/kordophone/src/tests/mod.rs
index b4e065a..43f21ef 100644
--- a/kordophone/src/tests/mod.rs
+++ b/kordophone/src/tests/mod.rs
@@ -9,7 +9,7 @@ pub mod api_interface {
     
     #[tokio::test]
     async fn test_version() {
-        let client = TestClient::new();
+        let mut client = TestClient::new();
         let version = client.get_version().await.unwrap();
         assert_eq!(version, client.version);
     }
diff --git a/kordophone/src/tests/test_client.rs b/kordophone/src/tests/test_client.rs
index e38882e..455dff8 100644
--- a/kordophone/src/tests/test_client.rs
+++ b/kordophone/src/tests/test_client.rs
@@ -1,7 +1,7 @@
 use async_trait::async_trait;
 
 pub use crate::APIInterface;
-use crate::model::Conversation;
+use crate::{api::http_client::Credentials, model::{Conversation, JwtToken}};
 
 pub struct TestClient {
     pub version: &'static str,
@@ -24,11 +24,15 @@ impl TestClient {
 impl APIInterface for TestClient {
     type Error = TestError;
 
-    async fn get_version(&self) -> Result<String, Self::Error> {
+    async fn authenticate(&mut self, credentials: Credentials) -> Result<JwtToken, Self::Error> {
+        Ok(JwtToken::dummy())
+    }
+
+    async fn get_version(&mut self) -> Result<String, Self::Error> {
         Ok(self.version.to_string())
     }
 
-    async fn get_conversations(&self) -> Result<Vec<Conversation>, Self::Error> {
+    async fn get_conversations(&mut self) -> Result<Vec<Conversation>, Self::Error> {
         Ok(self.conversations.clone())
     }
 }