diff --git a/.env.example b/.env.example
index 5ce40ef..dd8b0d6 100644
--- a/.env.example
+++ b/.env.example
@@ -1,8 +1,10 @@
 JWT_TOKEN=688f5d737bad920bdfb2fc2f488d6b6209eebda1dae949a8de91398d932c517a
+BUILDER_JWT_TOKEN=688f5d737bad920bdfb2fc2f488d6b6209eebda1dae949a8de91398d932c517a
 L2_URL=http://localhost:8551
 BUILDER_URL=http://localhost:8552
 RPC_HOST=0.0.0.0
 RPC_PORT=8081
 TRACING=false
 LOG_LEVEL=info
+METRICS=false
 BOOST_SYNC=false
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index e0aa343..442dc1b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -313,7 +313,7 @@ checksum = "4d0f2d905ebd295e7effec65e5f6868d153936130ae718352771de3e7d03c75c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -512,7 +512,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -524,11 +524,11 @@ dependencies = [
  "alloy-sol-macro-input",
  "const-hex",
  "heck",
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
  "syn-solidity",
  "tiny-keccak",
 ]
@@ -544,7 +544,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
  "syn-solidity",
 ]
 
@@ -702,7 +702,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -879,7 +879,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -890,7 +890,7 @@ checksum = "a27b8a3a6e1a44fa4c8baf1f653e4172e81486d4941f2237e20dc2d0cf4ddff1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -917,7 +917,7 @@ checksum = "3c87f3f15e7794432337fc718554eaa4dc8f04c9677a950ffe366f20a162ae42"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -926,6 +926,33 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
+[[package]]
+name = "aws-lc-rs"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdd82dba44d209fddb11c190e0a94b78651f95299598e472215667417a03ff1d"
+dependencies = [
+ "aws-lc-sys",
+ "mirai-annotations",
+ "paste",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-lc-sys"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df7a4168111d7eb622a31b214057b8509c0a7e1794f44c546d742330dc793972"
+dependencies = [
+ "bindgen 0.69.4",
+ "cc",
+ "cmake",
+ "dunce",
+ "fs_extra",
+ "libc",
+ "paste",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.74"
@@ -986,12 +1013,33 @@ dependencies = [
  "itertools 0.10.5",
  "lazy_static",
  "lazycell",
+ "log",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash 1.1.0",
+ "shlex",
+ "syn 2.0.85",
+ "which",
+]
+
+[[package]]
+name = "bindgen"
+version = "0.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f49d8fed880d473ea71efb9bf597651e77201bdd4893efe54c9e5d65ae04ce6f"
+dependencies = [
+ "bitflags 2.6.0",
+ "cexpr",
+ "clang-sys",
+ "itertools 0.13.0",
  "proc-macro2",
  "quote",
  "regex",
  "rustc-hash 1.1.0",
  "shlex",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1206,7 +1254,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1215,6 +1263,15 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1462739cb27611015575c0c11df5df7601141071f07518d56fcc1be504cbec97"
 
+[[package]]
+name = "cmake"
+version = "0.1.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb1e43aa7fd152b1f968787f7dbcdeb306d1867ff373c69955211876c053f91a"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.2"
@@ -1382,7 +1439,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1393,7 +1450,7 @@ checksum = "d336a2a514f6ccccaa3e09b02d41d35330c07ddf03a62165fcec10bb561c7806"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1449,7 +1506,7 @@ checksum = "67e77553c4162a157adbf834ebae5b415acbecbeafc7a74b0e886657506a7611"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1470,7 +1527,7 @@ dependencies = [
  "convert_case",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
  "unicode-xid",
 ]
 
@@ -1573,6 +1630,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "endian-type"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
+
 [[package]]
 name = "enr"
 version = "0.12.1"
@@ -1597,7 +1660,7 @@ checksum = "2f9ed6b3789237c8a0c1c505af1c7eb2c560df6186f01b098c3a1064ea532f38"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1692,6 +1755,12 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "foldhash"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f81ec6369c545a7d40e4589b5597581fa1c441fe1cce96dd1de43159910a36a2"
+
 [[package]]
 name = "foreign-types"
 version = "0.3.2"
@@ -1716,6 +1785,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fs_extra"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
+
 [[package]]
 name = "fsevent-sys"
 version = "4.1.0"
@@ -1733,9 +1808,9 @@ checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
 
 [[package]]
 name = "futures"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "645c6916888f6cb6350d2550b80fb63e734897a8498abe35cfb732b6487804b0"
+checksum = "65bc07b1a8bc7c85c5f2e110c476c7389b4554ba72af57d8445ea63a576b0876"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1748,9 +1823,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eac8f7d7865dcb88bd4373ab671c8cf4508703796caa2b1985a9ca867b3fcb78"
+checksum = "2dff15bf788c671c1934e366d07e30c1814a8ef514e1af724a602e8a2fbe1b10"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -1758,15 +1833,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
+checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a576fc72ae164fca6b9db127eaa9a9dda0d61316034f33a0a0d4eda41f02b01d"
+checksum = "1e28d1d997f585e54aebc3f97d39e72338912123a67330d723fdbb564d646c9f"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -1775,38 +1850,38 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a44623e20b9681a318efdd71c299b6b222ed6f231972bfe2f224ebad6311f0c1"
+checksum = "9e5c1b78ca4aae1ac06c48a526a655760685149f0d465d21f37abfe57ce075c6"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
+checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fb8e00e87438d937621c1c6269e53f536c14d3fbd6a042bb24879e57d474fb5"
+checksum = "e575fab7d1e0dcb8d0c7bcf9a63ee213816ab51902e6d244a95819acacf1d4f7"
 
 [[package]]
 name = "futures-task"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38d84fa142264698cdce1a9f9172cf383a0c82de1bddcf3092901442c4097004"
+checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
 
 [[package]]
 name = "futures-util"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d6401deb83407ab3da39eba7e33987a73c3df0c82b4bb5813ee871c19c41d48"
+checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1885,7 +1960,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "http 1.1.0",
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "slab",
  "tokio",
  "tokio-util",
@@ -1915,6 +1990,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+dependencies = [
+ "foldhash",
+]
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -1951,6 +2035,15 @@ dependencies = [
  "digest 0.10.7",
 ]
 
+[[package]]
+name = "home"
+version = "0.5.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3d1354bf6b7235cb4a0576c2619fd4ed18183f689b12b006a0ee7329eeff9a5"
+dependencies = [
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "http"
 version = "0.2.12"
@@ -2052,6 +2145,7 @@ dependencies = [
  "hyper-util",
  "log",
  "rustls",
+ "rustls-native-certs 0.8.0",
  "rustls-pki-types",
  "tokio",
  "tokio-rustls",
@@ -2105,7 +2199,7 @@ dependencies = [
  "iana-time-zone-haiku",
  "js-sys",
  "wasm-bindgen",
- "windows-core",
+ "windows-core 0.52.0",
 ]
 
 [[package]]
@@ -2191,12 +2285,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68b900aa2f7301e21c36462b170ee99994de34dff39a4a6a528e80e7376d07e5"
+checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
 dependencies = [
  "equivalent",
- "hashbrown 0.14.5",
+ "hashbrown 0.15.0",
  "serde",
 ]
 
@@ -2367,7 +2461,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -2493,9 +2587,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.158"
+version = "0.2.161"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8adc4bb1803a324070e64a98ae98f38934d91957a99cfb3a43dcbc01bc56439"
+checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
 
 [[package]]
 name = "libloading"
@@ -2513,6 +2607,17 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ec2a862134d2a7d32d7983ddcdd1c4923530833c9f2ea1a44fc5fa473989058"
 
+[[package]]
+name = "libproc"
+version = "0.14.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e78a09b56be5adbcad5aa1197371688dc6bb249a26da3bca2011ee2fb987ebfb"
+dependencies = [
+ "bindgen 0.70.1",
+ "errno",
+ "libc",
+]
+
 [[package]]
 name = "libredox"
 version = "0.1.3"
@@ -2561,6 +2666,15 @@ version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75761162ae2b0e580d7e7c390558127e5f01b4194debd6221fd8c207fc80e3f5"
 
+[[package]]
+name = "mach2"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19b955cdeb2a02b9117f121ce63aa52d08ade45de53e48fe6a38b39c10f6f709"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "matchers"
 version = "0.1.0"
@@ -2595,6 +2709,83 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "metrics"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ae428771d17306715c5091d446327d1cfdedc82185c65ba8423ab404e45bf10"
+dependencies = [
+ "ahash",
+ "portable-atomic",
+]
+
+[[package]]
+name = "metrics-derive"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3dbdd96ed57d565ec744cba02862d707acf373c5772d152abae6ec5c4e24f6c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "regex",
+ "syn 2.0.85",
+]
+
+[[package]]
+name = "metrics-exporter-prometheus"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85b6f8152da6d7892ff1b7a1c0fa3f435e92b5918ad67035c3bb432111d9a29b"
+dependencies = [
+ "base64 0.22.1",
+ "http-body-util",
+ "hyper",
+ "hyper-rustls",
+ "hyper-util",
+ "indexmap 2.6.0",
+ "ipnet",
+ "metrics 0.24.0",
+ "metrics-util",
+ "quanta",
+ "thiserror",
+ "tokio",
+ "tracing",
+]
+
+[[package]]
+name = "metrics-process"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57ca8ecd85575fbb143b2678cb123bb818779391ec0f745b1c4a9dbabadde407"
+dependencies = [
+ "libc",
+ "libproc",
+ "mach2",
+ "metrics 0.24.0",
+ "once_cell",
+ "procfs",
+ "rlimit",
+ "windows 0.58.0",
+]
+
+[[package]]
+name = "metrics-util"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15b482df36c13dd1869d73d14d28cd4855fbd6cfc32294bee109908a9f4a4ed7"
+dependencies = [
+ "aho-corasick",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+ "hashbrown 0.15.0",
+ "indexmap 2.6.0",
+ "metrics 0.24.0",
+ "ordered-float",
+ "quanta",
+ "radix_trie",
+ "sketches-ddsketch",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -2640,6 +2831,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "mirai-annotations"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9be0862c1b3f26a88803c4a49de6889c10e608b3ee9344e6ef5b45fb37ad3d1"
+
 [[package]]
 name = "modular-bitfield"
 version = "0.11.2"
@@ -2678,6 +2875,15 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "nibble_vec"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a5d83df9f36fe23f0c3648c6bbb8b0298bb5f1939c8f2704431371f4b84d43"
+dependencies = [
+ "smallvec",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -2838,7 +3044,7 @@ checksum = "af1844ef2428cc3e1cb900be36181049ef3d3193c63e43026cfe202983b27a56"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -2975,7 +3181,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -2996,6 +3202,15 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "ordered-float"
+version = "4.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83e7ccb95e240b7c9506a3d544f10d935e142cc90b0a1d56954fb44d89ad6b97"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -3124,7 +3339,7 @@ checksum = "2f38a4412a78282e09a2cf38d195ea5420d15ba0602cb375210efbc877243965"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -3206,6 +3421,16 @@ dependencies = [
  "termtree",
 ]
 
+[[package]]
+name = "prettyplease"
+version = "0.2.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64d1ec885c64d0457d564db4ec299b2dae3f9c02808b8ad9c3a089c591b18033"
+dependencies = [
+ "proc-macro2",
+ "syn 2.0.85",
+]
+
 [[package]]
 name = "primeorder"
 version = "0.13.6"
@@ -3278,7 +3503,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -3290,6 +3515,28 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "procfs"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc5b72d8145275d844d4b5f6d4e1eef00c8cd889edb6035c21675d1bb1f45c9f"
+dependencies = [
+ "bitflags 2.6.0",
+ "hex",
+ "procfs-core",
+ "rustix",
+]
+
+[[package]]
+name = "procfs-core"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "239df02d8349b06fc07398a3a1697b06418223b1c7725085e801e7c0fc6a12ec"
+dependencies = [
+ "bitflags 2.6.0",
+ "hex",
+]
+
 [[package]]
 name = "proptest"
 version = "1.5.0"
@@ -3318,7 +3565,22 @@ checksum = "6ff7ff745a347b87471d859a377a9a404361e7efc2a971d73424a6d183c0fc77"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
+]
+
+[[package]]
+name = "quanta"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e5167a477619228a0b284fac2674e3c388cba90631d7b7de620e6f1fcd08da5"
+dependencies = [
+ "crossbeam-utils",
+ "libc",
+ "once_cell",
+ "raw-cpuid",
+ "wasi",
+ "web-sys",
+ "winapi",
 ]
 
 [[package]]
@@ -3342,6 +3604,16 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
 
+[[package]]
+name = "radix_trie"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c069c179fcdc6a2fe24d8d18305cf085fdbd4f922c041943e203685d6a1c58fd"
+dependencies = [
+ "endian-type",
+ "nibble_vec",
+]
+
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -3381,6 +3653,15 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "raw-cpuid"
+version = "11.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ab240315c661615f2ee9f0f2cd32d5a7343a84d5ebcccb99d46e6637565e7b0"
+dependencies = [
+ "bitflags 2.6.0",
+]
+
 [[package]]
 name = "rayon"
 version = "1.10.0"
@@ -3506,7 +3787,7 @@ dependencies = [
  "alloy-rlp",
  "futures-core",
  "futures-util",
- "metrics",
+ "metrics 0.23.0",
  "reth-chainspec",
  "reth-metrics",
  "reth-payload-builder",
@@ -3543,7 +3824,7 @@ dependencies = [
  "alloy-primitives",
  "auto_impl",
  "derive_more",
- "metrics",
+ "metrics 0.23.0",
  "parking_lot",
  "pin-project",
  "reth-chainspec",
@@ -3605,7 +3886,7 @@ dependencies = [
  "convert_case",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -3639,7 +3920,7 @@ dependencies = [
  "bytes",
  "derive_more",
  "eyre",
- "metrics",
+ "metrics 0.23.0",
  "page_size",
  "paste",
  "reth-db-api",
@@ -3669,7 +3950,7 @@ dependencies = [
  "alloy-primitives",
  "bytes",
  "derive_more",
- "metrics",
+ "metrics 0.23.0",
  "modular-bitfield",
  "parity-scale-codec",
  "reth-codecs",
@@ -3781,7 +4062,7 @@ dependencies = [
  "alloy-eips",
  "auto_impl",
  "futures-util",
- "metrics",
+ "metrics 0.23.0",
  "reth-chainspec",
  "reth-execution-errors",
  "reth-execution-types",
@@ -3863,7 +4144,7 @@ dependencies = [
  "byteorder",
  "dashmap",
  "derive_more",
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "parking_lot",
  "reth-mdbx-sys",
  "thiserror",
@@ -3875,7 +4156,7 @@ name = "reth-mdbx-sys"
 version = "1.0.7"
 source = "git+https://github.com/paradigmxyz/reth.git?tag=v1.0.7#75b7172cf77eb4fd65fe1a6924f75066fb09fcd1"
 dependencies = [
- "bindgen",
+ "bindgen 0.69.4",
  "cc",
 ]
 
@@ -3884,7 +4165,7 @@ name = "reth-metrics"
 version = "1.0.7"
 source = "git+https://github.com/paradigmxyz/reth.git?tag=v1.0.7#75b7172cf77eb4fd65fe1a6924f75066fb09fcd1"
 dependencies = [
- "metrics",
+ "metrics 0.23.0",
  "reth-metrics-derive",
 ]
 
@@ -3896,7 +4177,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -4042,7 +4323,7 @@ source = "git+https://github.com/paradigmxyz/reth.git?tag=v1.0.7#75b7172cf77eb4f
 dependencies = [
  "alloy-primitives",
  "futures-util",
- "metrics",
+ "metrics 0.23.0",
  "pin-project",
  "reth-errors",
  "reth-ethereum-engine-primitives",
@@ -4137,7 +4418,7 @@ dependencies = [
  "auto_impl",
  "dashmap",
  "itertools 0.13.0",
- "metrics",
+ "metrics 0.23.0",
  "notify",
  "parking_lot",
  "rayon",
@@ -4308,7 +4589,7 @@ dependencies = [
  "auto_impl",
  "dyn-clone",
  "futures-util",
- "metrics",
+ "metrics 0.23.0",
  "reth-metrics",
  "thiserror",
  "tokio",
@@ -4343,7 +4624,7 @@ dependencies = [
  "auto_impl",
  "bitflags 2.6.0",
  "futures-util",
- "metrics",
+ "metrics 0.23.0",
  "parking_lot",
  "reth-chain-state",
  "reth-chainspec",
@@ -4375,7 +4656,7 @@ dependencies = [
  "auto_impl",
  "derive_more",
  "itertools 0.13.0",
- "metrics",
+ "metrics 0.23.0",
  "rayon",
  "reth-execution-errors",
  "reth-metrics",
@@ -4417,7 +4698,7 @@ dependencies = [
  "auto_impl",
  "derive_more",
  "itertools 0.13.0",
- "metrics",
+ "metrics 0.23.0",
  "rayon",
  "reth-db",
  "reth-db-api",
@@ -4531,6 +4812,15 @@ dependencies = [
  "digest 0.10.7",
 ]
 
+[[package]]
+name = "rlimit"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7043b63bd0cd1aaa628e476b80e6d4023a3b50eb32789f2728908107bd0c793a"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "rlp"
 version = "0.5.2"
@@ -4572,12 +4862,18 @@ dependencies = [
  "assert_cmd",
  "clap",
  "dotenv",
+ "futures",
  "http 1.1.0",
  "http-body 0.4.6",
  "http-body-util",
  "hyper",
  "hyper-util",
  "jsonrpsee",
+ "metrics 0.24.0",
+ "metrics-derive",
+ "metrics-exporter-prometheus",
+ "metrics-process",
+ "metrics-util",
  "op-alloy-rpc-types",
  "op-alloy-rpc-types-engine",
  "predicates",
@@ -4691,6 +4987,7 @@ version = "0.23.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2dabaac7466917e566adb06783a81ca48944c6898a1b08b9374106dd671f4c8"
 dependencies = [
+ "aws-lc-rs",
  "log",
  "once_cell",
  "ring",
@@ -4713,6 +5010,19 @@ dependencies = [
  "security-framework",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcaf18a4f2be7326cd874a5fa579fae794320a0f388d365dca7e480e55f83f8a"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "2.1.3"
@@ -4741,7 +5051,7 @@ dependencies = [
  "log",
  "once_cell",
  "rustls",
- "rustls-native-certs",
+ "rustls-native-certs 0.7.3",
  "rustls-platform-verifier-android",
  "rustls-webpki",
  "security-framework",
@@ -4762,6 +5072,7 @@ version = "0.102.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "64ca1bc8749bd4cf37b5ce386cc146580777b4e8572c7b97baf22c83f444bee9"
 dependencies = [
+ "aws-lc-rs",
  "ring",
  "rustls-pki-types",
  "untrusted",
@@ -4924,7 +5235,7 @@ checksum = "243902eda00fad750862fc144cea25caca5e20d615af0a81bee94ca738f1df1f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -4933,7 +5244,7 @@ version = "1.0.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ff5456707a1de34e7e37f2a6fd3d3f808c318259cbd01ab6377795054b483d8"
 dependencies = [
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "itoa",
  "memchr",
  "ryu",
@@ -4948,7 +5259,7 @@ checksum = "6c64451ba24fc7a6a2d60fc75dd9c83c90903b19028d4eff35e88fc1e86564e9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -4973,7 +5284,7 @@ dependencies = [
  "chrono",
  "hex",
  "indexmap 1.9.3",
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "serde",
  "serde_derive",
  "serde_json",
@@ -4990,7 +5301,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5081,6 +5392,12 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "sketches-ddsketch"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1e9a774a6c28142ac54bb25d25562e6bcf957493a184f15ad4eebccb23e410a"
+
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -5175,7 +5492,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5210,9 +5527,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.77"
+version = "2.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f35bcdf61fd8e7be6caf75f429fdca8beb3ed76584befb503b1569faee373ed"
+checksum = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5228,7 +5545,7 @@ dependencies = [
  "paste",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5257,7 +5574,7 @@ dependencies = [
  "libc",
  "ntapi",
  "once_cell",
- "windows",
+ "windows 0.52.0",
 ]
 
 [[package]]
@@ -5323,7 +5640,7 @@ checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5446,7 +5763,7 @@ checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5508,7 +5825,7 @@ version = "0.22.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b072cee73c449a636ffd6f32bd8de3a9f7119139aff882f44943ce2986dc5cf"
 dependencies = [
- "indexmap 2.5.0",
+ "indexmap 2.6.0",
  "toml_datetime",
  "winnow",
 ]
@@ -5587,7 +5904,7 @@ checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -5841,7 +6158,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
  "wasm-bindgen-shared",
 ]
 
@@ -5875,7 +6192,7 @@ checksum = "afc340c74d9005395cf9dd098506f7f44e38f2b4a21c6aaacf9a105ea5e1e836"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -5905,6 +6222,18 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "which"
+version = "4.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87ba24419a2078cd2b0f2ede2691b6c66d8e47836da3b6db8265ebad47afbfc7"
+dependencies = [
+ "either",
+ "home",
+ "once_cell",
+ "rustix",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -5942,7 +6271,17 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be"
 dependencies = [
- "windows-core",
+ "windows-core 0.52.0",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd04d41d93c4992d421894c18c8b43496aa748dd4c081bac0dc93eb0489272b6"
+dependencies = [
+ "windows-core 0.58.0",
  "windows-targets 0.52.6",
 ]
 
@@ -5955,6 +6294,41 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-result",
+ "windows-strings",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.85",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.85",
+]
+
 [[package]]
 name = "windows-registry"
 version = "0.2.0"
@@ -6169,7 +6543,7 @@ checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -6189,7 +6563,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.77",
+ "syn 2.0.85",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 7fc589e..85faad4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,6 +28,12 @@ hyper-util = { version = "0.1", features = ["full"] }
 serde_json = "1.0.96"
 reth-rpc-layer = { git = "https://github.com/paradigmxyz/reth.git", tag = "v1.0.7" }
 reth-optimism-payload-builder = { git = "https://github.com/paradigmxyz/reth.git", tag = "v1.0.7", features = ["optimism"] }
+futures = "0.3.31"
+metrics-derive = "0.1"
+metrics = "0.24.0"
+metrics-exporter-prometheus = "0.16.0"
+metrics-process = "2.3.1"
+metrics-util = "0.18.0"
 
 [dev-dependencies]
 anyhow = "1.0"
diff --git a/README.md b/README.md
index 43fe1f8..a066ea2 100644
--- a/README.md
+++ b/README.md
@@ -14,12 +14,16 @@ cargo run -- [OPTIONS]
 ### Command-line Options
 
 - `--jwt-token <TOKEN>`: JWT token for authentication (required)
+- `--jwt-path <PATH>`: Path to the JWT secret file (required if `--jwt-token` is not provided)
 - `--l2-url <URL>`: URL of the local L2 execution engine (required)
 - `--builder-url <URL>`: URL of the builder execution engine (required)
+- `--builder-jwt-token <TOKEN>`: JWT token for builder authentication. defaults to the value of `--jwt-token` if not provided
+- `--builder-jwt-path <PATH>`: Path to the builder JWT secret file.
 - `--rpc-host <HOST>`: Host to run the server on (default: 0.0.0.0)
 - `--rpc-port <PORT>`: Port to run the server on (default: 8081)
 - `--tracing`: Enable tracing (default: false)
 - `--log-level <LEVEL>`: Log level (default: info)
+- `--metrics`: Enable metrics (default: false)
 - `--boost-sync`: Enable syncing the builder with the proposer op-node (default: false)
 
 ### Environment Variables
diff --git a/src/error.rs b/src/error.rs
index ee0e4a5..734dd7c 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -8,4 +8,6 @@ pub enum Error {
     InitRPCClient(String),
     #[error("Error Initializing RPC Server: {0}")]
     InitRPCServer(String),
+    #[error("Error Initializing Prometheus Metrics: {0}")]
+    InitMetrics(String),
 }
diff --git a/src/main.rs b/src/main.rs
index 09137b3..aa29107 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,6 +7,9 @@ use jsonrpsee::http_client::transport::HttpBackend;
 use jsonrpsee::http_client::{HttpClient, HttpClientBuilder};
 use jsonrpsee::server::Server;
 use jsonrpsee::RpcModule;
+use metrics::ServerMetrics;
+use metrics_exporter_prometheus::PrometheusBuilder;
+use metrics_util::layers::{PrefixLayer, Stack};
 use proxy::ProxyLayer;
 use reth_rpc_layer::{AuthClientLayer, AuthClientService};
 use server::{EngineApiServer, EthEngineApi};
@@ -16,6 +19,7 @@ use tracing::{info, Level};
 use tracing_subscriber::EnvFilter;
 
 mod error;
+mod metrics;
 mod proxy;
 mod server;
 
@@ -63,6 +67,10 @@ struct Args {
     #[arg(long, env, default_value = "false")]
     tracing: bool,
 
+    // Enable Prometheus metrics
+    #[arg(long, env, default_value = "false")]
+    metrics: bool,
+
     /// Log level
     #[arg(long, env, default_value = "info")]
     log_level: Level,
@@ -81,6 +89,21 @@ async fn main() -> Result<()> {
         .with_env_filter(EnvFilter::new(args.log_level.to_string())) // Set the log level
         .init();
 
+    let (metrics, handler) = if args.metrics {
+        let recorder = PrometheusBuilder::new().build_recorder();
+        let handle = recorder.handle();
+
+        // Build metrics stack
+        Stack::new(recorder)
+            .push(PrefixLayer::new("rollup-boost"))
+            .install()
+            .map_err(|e| Error::InitMetrics(e.to_string()))?;
+
+        (Some(Arc::new(ServerMetrics::default())), Some(handle))
+    } else {
+        (None, None)
+    };
+
     // Handle JWT secret
     let jwt_secret = match (args.jwt_path, args.jwt_token) {
         (Some(file), None) => {
@@ -119,6 +142,7 @@ async fn main() -> Result<()> {
         Arc::new(l2_client),
         Arc::new(builder_client),
         args.boost_sync,
+        metrics,
     );
     let mut module: RpcModule<()> = RpcModule::new(());
     module
@@ -131,6 +155,7 @@ async fn main() -> Result<()> {
         args.l2_url
             .parse::<Uri>()
             .map_err(|e| Error::InvalidArgs(e.to_string()))?,
+        handler,
     ));
     let server = Server::builder()
         .set_http_middleware(service_builder)
diff --git a/src/metrics.rs b/src/metrics.rs
new file mode 100644
index 0000000..ac25905
--- /dev/null
+++ b/src/metrics.rs
@@ -0,0 +1,18 @@
+use metrics::Counter;
+use metrics_derive::Metrics;
+
+#[derive(Metrics)]
+#[metrics(scope = "rpc")]
+pub struct ServerMetrics {
+    #[metric(describe = "Count of forkchoice_updated_v3 calls proxied to the builder")]
+    pub fcu_count: Counter,
+
+    #[metric(describe = "Count of new_payload_v3 calls proxied to the builder")]
+    pub new_payload_count: Counter,
+
+    #[metric(describe = "Count of get_payload_v3 calls proxied to the builder")]
+    pub get_payload_count: Counter,
+
+    #[metric(describe = "Count of send_raw_transaction calls proxied to the builder")]
+    pub send_raw_tx_count: Counter,
+}
diff --git a/src/proxy.rs b/src/proxy.rs
index a1e2156..aa9fb9d 100644
--- a/src/proxy.rs
+++ b/src/proxy.rs
@@ -1,9 +1,11 @@
-use http::Uri;
+use http::header::CONTENT_TYPE;
+use http::{HeaderValue, Uri};
 use hyper_util::client::legacy::connect::HttpConnector;
 use hyper_util::client::legacy::Client;
 use hyper_util::rt::TokioExecutor;
 use jsonrpsee::core::{http_helpers, BoxError};
 use jsonrpsee::http_client::{HttpBody, HttpRequest, HttpResponse};
+use metrics_exporter_prometheus::PrometheusHandle;
 use std::task::{Context, Poll};
 use std::{future::Future, pin::Pin};
 use tower::{Layer, Service};
@@ -14,11 +16,12 @@ const MULTIPLEX_METHODS: [&str; 2] = ["engine_", "eth_sendRawTransaction"];
 #[derive(Debug, Clone)]
 pub struct ProxyLayer {
     target_url: Uri,
+    handle: Option<PrometheusHandle>,
 }
 
 impl ProxyLayer {
-    pub fn new(target_url: Uri) -> Self {
-        ProxyLayer { target_url }
+    pub fn new(target_url: Uri, handle: Option<PrometheusHandle>) -> Self {
+        ProxyLayer { target_url, handle }
     }
 }
 
@@ -30,15 +33,17 @@ impl<S> Layer<S> for ProxyLayer {
             inner,
             client: Client::builder(TokioExecutor::new()).build_http(),
             target_url: self.target_url.clone(),
+            handle: self.handle.clone(),
         }
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct ProxyService<S> {
     inner: S,
     client: Client<HttpConnector, HttpBody>,
     target_url: Uri,
+    handle: Option<PrometheusHandle>,
 }
 
 impl<S> Service<HttpRequest<HttpBody>> for ProxyService<S>
@@ -60,7 +65,18 @@ where
     fn call(&mut self, req: HttpRequest<HttpBody>) -> Self::Future {
         match req.uri().path() {
             "/healthz" => return Box::pin(async { Ok(Self::Response::new(HttpBody::from("OK"))) }),
-            "/metrics" => {}
+            "/metrics" => {
+                if let Some(handle) = self.handle.as_ref() {
+                    let metrics = handle.render();
+                    return Box::pin(async {
+                        let mut response = Self::Response::new(HttpBody::from(metrics));
+                        response
+                            .headers_mut()
+                            .insert(CONTENT_TYPE, HeaderValue::from_static("text/plain"));
+                        Ok::<HttpResponse, BoxError>(response)
+                    });
+                }
+            }
             _ => {}
         };
 
@@ -238,7 +254,8 @@ mod tests {
     /// Spawn a new RPC server with a proxy layer.
     async fn spawn_proxy_server() -> ServerHandle {
         let addr = format!("{ADDR}:{PORT}");
-        let proxy_layer = ProxyLayer::new(format!("http://{ADDR}:{PROXY_PORT}").parse().unwrap());
+        let proxy_layer =
+            ProxyLayer::new(format!("http://{ADDR}:{PROXY_PORT}").parse().unwrap(), None);
         // Create a layered server
         let server = ServerBuilder::default()
             .set_http_middleware(tower::ServiceBuilder::new().layer(proxy_layer))
diff --git a/src/server.rs b/src/server.rs
index 4fcb125..4445e6f 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -17,6 +17,8 @@ use reth_rpc_layer::AuthClientService;
 use std::sync::Arc;
 use tracing::{debug, error, info};
 
+use crate::metrics::ServerMetrics;
+
 #[rpc(server, client, namespace = "engine")]
 pub trait EngineApi {
     #[method(name = "forkchoiceUpdatedV3")]
@@ -51,6 +53,7 @@ pub struct EthEngineApi<S = AuthClientService<HttpBackend>> {
     l2_client: Arc<HttpClient<S>>,
     builder_client: Arc<HttpClient<S>>,
     boost_sync: bool,
+    metrics: Option<Arc<ServerMetrics>>,
 }
 
 impl<S> EthEngineApi<S> {
@@ -58,11 +61,13 @@ impl<S> EthEngineApi<S> {
         l2_client: Arc<HttpClient<S>>,
         builder_client: Arc<HttpClient<S>>,
         boost_sync: bool,
+        metrics: Option<Arc<ServerMetrics>>,
     ) -> Self {
         Self {
             l2_client,
             builder_client,
             boost_sync,
+            metrics,
         }
     }
 }
@@ -74,6 +79,11 @@ impl EthApiServer for EthEngineApi {
             message = "received send_raw_transaction",
             "bytes_len" = bytes.len()
         );
+
+        if let Some(metrics) = &self.metrics {
+            metrics.send_raw_tx_count.increment(1);
+        }
+
         let builder = self.builder_client.clone();
         let tx_bytes = bytes.clone();
         tokio::spawn(async move {
@@ -81,6 +91,7 @@ impl EthApiServer for EthEngineApi {
                 error!(message = "error calling send_raw_transaction for builder", "error" = %e);
             })
         });
+
         self.l2_client
             .send_raw_transaction(bytes)
             .await
@@ -123,6 +134,9 @@ impl EngineApiServer for EthEngineApi {
 
         if should_send_to_builder {
             // async call to builder to trigger payload building and sync
+            if let Some(metrics) = &self.metrics {
+                metrics.fcu_count.increment(1);
+            }
             let builder = self.builder_client.clone();
             let attr = payload_attributes.clone();
             tokio::spawn(async move {
@@ -163,17 +177,24 @@ impl EngineApiServer for EthEngineApi {
     ) -> RpcResult<OptimismExecutionPayloadEnvelopeV3> {
         info!(message = "received get_payload_v3", "payload_id" = %payload_id);
         let l2_client_future = self.l2_client.get_payload_v3(payload_id);
-        let builder_client_future = Box::pin(async {
-            let payload = self.builder_client.get_payload_v3(payload_id).await.map_err(|e| {
+        let builder_client_future = Box::pin(async move {
+            if let Some(metrics) = &self.metrics {
+                metrics.get_payload_count.increment(1);
+            }
+            let builder = self.builder_client.clone();
+            let payload = builder.get_payload_v3(payload_id).await.map_err(|e| {
                 error!(message = "error calling get_payload_v3 from builder", "error" = %e, "payload_id" = %payload_id);
                 e
-            })?;
+                })?;
 
             info!(message = "received payload from builder", "payload_id" = %payload_id, "block_hash" = %payload.as_v1_payload().block_hash);
 
             // Send the payload to the local execution engine with engine_newPayload to validate the block from the builder.
             // Otherwise, we do not want to risk the network to a halt since op-node will not be able to propose the block.
             // If validation fails, return the local block since that one has already been validated.
+            if let Some(metrics) = &self.metrics {
+                metrics.new_payload_count.increment(1);
+            }
             let payload_status = self.l2_client.new_payload_v3(payload.execution_payload.clone(), vec![], payload.parent_beacon_block_root).await.map_err(|e| {
                 error!(message = "error calling new_payload_v3 to validate builder payload", "error" = %e, "payload_id" = %payload_id);
                 e
@@ -217,6 +238,10 @@ impl EngineApiServer for EthEngineApi {
 
         // async call to builder to sync the builder node
         if self.boost_sync {
+            if let Some(metrics) = &self.metrics {
+                metrics.new_payload_count.increment(1);
+            }
+
             let builder = self.builder_client.clone();
             let builder_payload = payload.clone();
             let builder_versioned_hashes = versioned_hashes.clone();