diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index ee8960d88fec..54416473aa4f 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -193,7 +193,7 @@ checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
 dependencies = [
  "cfg-if",
  "cipher",
- "cpufeatures",
+ "cpufeatures 0.2.17",
 ]
 
 [[package]]
@@ -449,7 +449,7 @@ dependencies = [
  "objc2-foundation",
  "parking_lot",
  "percent-encoding",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
  "wl-clipboard-rs",
  "x11rb",
 ]
@@ -781,7 +781,6 @@ dependencies = [
  "axum-core",
  "base64 0.22.1",
  "bytes",
- "form_urlencoded",
  "futures-util",
  "http 1.4.0",
  "http-body",
@@ -797,7 +796,6 @@ dependencies = [
  "serde_core",
  "serde_json",
  "serde_path_to_error",
- "serde_urlencoded",
  "sha1",
  "sync_wrapper",
  "tokio",
@@ -805,7 +803,6 @@ dependencies = [
  "tower",
  "tower-layer",
  "tower-service",
- "tracing",
 ]
 
 [[package]]
@@ -824,7 +821,6 @@ dependencies = [
  "sync_wrapper",
  "tower-layer",
  "tower-service",
- "tracing",
 ]
 
 [[package]]
@@ -1212,7 +1208,18 @@ checksum = "c3613f74bd2eac03dad61bd53dbe620703d4371614fe0bc3b9f04dd36fe4e818"
 dependencies = [
  "cfg-if",
  "cipher",
- "cpufeatures",
+ "cpufeatures 0.2.17",
+]
+
+[[package]]
+name = "chacha20"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f8d983286843e49675a4b7a2d174efe136dc93a18d69130dd18198a6c167601"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.0",
+ "rand_core 0.10.1",
 ]
 
 [[package]]
@@ -1222,7 +1229,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10cd79432192d1c0f4e1a0fef9527696cc039165d729fb41b3f4f4f354c2dc35"
 dependencies = [
  "aead",
- "chacha20",
+ "chacha20 0.9.1",
  "cipher",
  "poly1305",
  "zeroize",
@@ -1363,7 +1370,7 @@ checksum = "af491d569909a7e4dee0ad7db7f5341fef5c614d5b8ec8cf765732aba3cff681"
 dependencies = [
  "serde",
  "termcolor",
- "unicode-width 0.1.14",
+ "unicode-width 0.2.1",
 ]
 
 [[package]]
@@ -1411,7 +1418,7 @@ dependencies = [
  "http 1.4.0",
  "pretty_assertions",
  "regex-lite",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "tempfile",
@@ -1477,7 +1484,7 @@ dependencies = [
  "opentelemetry_sdk",
  "owo-colors",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "rmcp",
  "serde",
  "serde_json",
@@ -1626,7 +1633,7 @@ dependencies = [
  "codex-login",
  "codex-protocol",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
 ]
@@ -1727,7 +1734,7 @@ dependencies = [
  "opentelemetry_sdk",
  "pretty_assertions",
  "rand 0.9.2",
- "reqwest",
+ "reqwest 0.12.28",
  "rustls",
  "rustls-native-certs",
  "rustls-pki-types",
@@ -1788,7 +1795,7 @@ dependencies = [
  "owo-colors",
  "pretty_assertions",
  "ratatui",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "supports-color 3.0.2",
@@ -1972,7 +1979,7 @@ dependencies = [
  "pretty_assertions",
  "rand 0.9.2",
  "regex-lite",
- "reqwest",
+ "reqwest 0.12.28",
  "rmcp",
  "serde",
  "serde_json",
@@ -2289,7 +2296,7 @@ version = "0.0.0"
 dependencies = [
  "codex-core",
  "codex-model-provider-info",
- "reqwest",
+ "reqwest 0.12.28",
  "serde_json",
  "tokio",
  "tracing",
@@ -2322,7 +2329,7 @@ dependencies = [
  "pretty_assertions",
  "rand 0.9.2",
  "regex-lite",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "serial_test",
@@ -2489,7 +2496,7 @@ dependencies = [
  "codex-model-provider-info",
  "futures",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "semver",
  "serde_json",
  "tokio",
@@ -2517,7 +2524,7 @@ dependencies = [
  "opentelemetry_sdk",
  "os_info",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "strum_macros 0.28.0",
@@ -2569,7 +2576,7 @@ dependencies = [
  "landlock",
  "pretty_assertions",
  "quick-xml",
- "reqwest",
+ "reqwest 0.12.28",
  "schemars 0.8.22",
  "seccompiler",
  "serde",
@@ -2616,7 +2623,7 @@ dependencies = [
  "ctor 0.6.3",
  "libc",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "tiny_http",
@@ -2640,7 +2647,7 @@ dependencies = [
  "keyring",
  "oauth2",
  "pretty_assertions",
- "reqwest",
+ "reqwest 0.12.28",
  "rmcp",
  "serde",
  "serde_json",
@@ -2894,7 +2901,7 @@ dependencies = [
  "ratatui",
  "ratatui-macros",
  "regex-lite",
- "reqwest",
+ "reqwest 0.12.28",
  "rmcp",
  "serde",
  "serde_json",
@@ -3254,7 +3261,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3bb320cac8a0750d7f25280aa97b09c26edfe161164238ecbbb31092b079e735"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "proptest",
  "serde_core",
 ]
@@ -3383,7 +3390,7 @@ dependencies = [
  "opentelemetry_sdk",
  "pretty_assertions",
  "regex-lite",
- "reqwest",
+ "reqwest 0.12.28",
  "serde_json",
  "shlex",
  "tempfile",
@@ -3449,6 +3456,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc"
 version = "3.4.0"
@@ -3617,7 +3633,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "curve25519-dalek-derive",
  "fiat-crypto",
  "rustc_version",
@@ -4089,7 +4105,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users 0.5.2",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4334,7 +4350,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4864,11 +4880,25 @@ dependencies = [
  "cfg-if",
  "js-sys",
  "libc",
- "r-efi",
+ "r-efi 5.3.0",
  "wasip2",
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0de51e6874e94e7bf76d726fc5d13ba782deca734ff60d5bb2fb2607c7406555"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi 6.0.0",
+ "rand_core 0.10.1",
+ "wasip2",
+ "wasip3",
+]
+
 [[package]]
 name = "gif"
 version = "0.14.1"
@@ -4895,7 +4925,7 @@ dependencies = [
  "gobject-sys",
  "libc",
  "system-deps",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -5339,7 +5369,7 @@ dependencies = [
  "libc",
  "percent-encoding",
  "pin-project-lite",
- "socket2 0.5.10",
+ "socket2 0.6.2",
  "system-configuration",
  "tokio",
  "tower-service",
@@ -5425,7 +5455,7 @@ dependencies = [
  "js-sys",
  "log",
  "wasm-bindgen",
- "windows-core 0.58.0",
+ "windows-core 0.62.2",
 ]
 
 [[package]]
@@ -5585,6 +5615,12 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "id-arena"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
+
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -5845,7 +5881,7 @@ checksum = "3640c1c38b8e4e43584d8df18be5fc6b0aa314ce6ebf51b53313d4306cca8e46"
 dependencies = [
  "hermit-abi",
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6084,6 +6120,12 @@ dependencies = [
  "spin",
 ]
 
+[[package]]
+name = "leb128fmt"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
+
 [[package]]
 name = "libc"
 version = "0.2.182"
@@ -6691,7 +6733,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6872,7 +6914,7 @@ dependencies = [
  "getrandom 0.2.17",
  "http 1.4.0",
  "rand 0.8.5",
- "reqwest",
+ "reqwest 0.12.28",
  "serde",
  "serde_json",
  "serde_path_to_error",
@@ -7233,7 +7275,7 @@ dependencies = [
  "bytes",
  "http 1.4.0",
  "opentelemetry",
- "reqwest",
+ "reqwest 0.12.28",
 ]
 
 [[package]]
@@ -7248,7 +7290,7 @@ dependencies = [
  "opentelemetry-proto",
  "opentelemetry_sdk",
  "prost 0.14.3",
- "reqwest",
+ "reqwest 0.12.28",
  "serde_json",
  "thiserror 2.0.18",
  "tokio",
@@ -7335,7 +7377,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7d8fae84b431384b68627d0f9b3b1245fcf9f46f6c0e3dc902e9dce64edd1967"
 dependencies = [
  "libc",
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -7654,7 +7696,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8159bd90725d2df49889a078b54f4f79e87f1f8a8444194cdca81d38f5393abf"
 dependencies = [
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "opaque-debug",
  "universal-hash",
 ]
@@ -7994,7 +8036,7 @@ dependencies = [
  "quinn-udp",
  "rustc-hash 2.1.1",
  "rustls",
- "socket2 0.5.10",
+ "socket2 0.6.2",
  "thiserror 2.0.18",
  "tokio",
  "tracing",
@@ -8031,9 +8073,9 @@ dependencies = [
  "cfg_aliases 0.2.1",
  "libc",
  "once_cell",
- "socket2 0.5.10",
+ "socket2 0.6.2",
  "tracing",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -8051,6 +8093,12 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
+[[package]]
+name = "r-efi"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
+
 [[package]]
 name = "radix_trie"
 version = "0.2.1"
@@ -8402,6 +8450,17 @@ dependencies = [
  "rand_core 0.9.5",
 ]
 
+[[package]]
+name = "rand"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
+dependencies = [
+ "chacha20 0.10.0",
+ "getrandom 0.4.2",
+ "rand_core 0.10.1",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.3.1"
@@ -8440,6 +8499,12 @@ dependencies = [
  "getrandom 0.3.4",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
+
 [[package]]
 name = "rand_xorshift"
 version = "0.4.0"
@@ -8657,11 +8722,45 @@ dependencies = [
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
- "wasm-streams",
+ "wasm-streams 0.4.2",
  "web-sys",
  "webpki-roots 1.0.5",
 ]
 
+[[package]]
+name = "reqwest"
+version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62e0021ea2c22aed41653bc7e1419abb2c97e038ff2c33d0e1309e49a97deec0"
+dependencies = [
+ "base64 0.22.1",
+ "bytes",
+ "futures-core",
+ "futures-util",
+ "http 1.4.0",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "js-sys",
+ "log",
+ "percent-encoding",
+ "pin-project-lite",
+ "serde",
+ "serde_json",
+ "sync_wrapper",
+ "tokio",
+ "tokio-util",
+ "tower",
+ "tower-http",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-streams 0.5.0",
+ "web-sys",
+]
+
 [[package]]
 name = "resb"
 version = "0.1.1"
@@ -8694,12 +8793,11 @@ dependencies = [
 
 [[package]]
 name = "rmcp"
-version = "0.15.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bef41ebc9ebed2c1b1d90203e9d1756091e8a00bbc3107676151f39868ca0ee"
+checksum = "e12ca9067b5ebfbd5b3fcdc4acfceb81aa7d5ab2a879dff7cb75d22434276aad"
 dependencies = [
  "async-trait",
- "axum",
  "base64 0.22.1",
  "bytes",
  "chrono",
@@ -8711,8 +8809,8 @@ dependencies = [
  "pastey",
  "pin-project-lite",
  "process-wrap",
- "rand 0.9.2",
- "reqwest",
+ "rand 0.10.1",
+ "reqwest 0.13.3",
  "rmcp-macros",
  "schemars 1.2.1",
  "serde",
@@ -8730,9 +8828,9 @@ dependencies = [
 
 [[package]]
 name = "rmcp-macros"
-version = "0.15.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e88ad84b8b6237a934534a62b379a5be6388915663c0cc598ceb9b3292bbbfe"
+checksum = "7caa6743cc0888e433105fe1bc551a7f607940b126a37bc97b478e86064627eb"
 dependencies = [
  "darling 0.23.0",
  "proc-macro2",
@@ -8875,7 +8973,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.11.0",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -9239,7 +9337,7 @@ checksum = "2f925d575b468e88b079faf590a8dd0c9c99e2ec29e9bab663ceb8b45056312f"
 dependencies = [
  "httpdate",
  "native-tls",
- "reqwest",
+ "reqwest 0.12.28",
  "sentry-actix",
  "sentry-backtrace",
  "sentry-contexts",
@@ -9551,7 +9649,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
@@ -9568,7 +9666,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
@@ -10334,7 +10432,7 @@ dependencies = [
  "getrandom 0.3.4",
  "once_cell",
  "rustix 1.1.3",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -11493,6 +11591,15 @@ dependencies = [
  "wit-bindgen",
 ]
 
+[[package]]
+name = "wasip3"
+version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
+dependencies = [
+ "wit-bindgen",
+]
+
 [[package]]
 name = "wasite"
 version = "0.1.0"
@@ -11558,6 +11665,28 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "wasm-encoder"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
+dependencies = [
+ "leb128fmt",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
+dependencies = [
+ "anyhow",
+ "indexmap 2.13.0",
+ "wasm-encoder",
+ "wasmparser",
+]
+
 [[package]]
 name = "wasm-streams"
 version = "0.4.2"
@@ -11571,6 +11700,31 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "wasm-streams"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d1ec4f6517c9e11ae630e200b2b65d193279042e28edd4a2cda233e46670bbb"
+dependencies = [
+ "futures-util",
+ "js-sys",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
+dependencies = [
+ "bitflags 2.10.0",
+ "hashbrown 0.15.5",
+ "indexmap 2.13.0",
+ "semver",
+]
+
 [[package]]
 name = "wayland-backend"
 version = "0.3.12"
@@ -11726,7 +11880,7 @@ dependencies = [
  "anyhow",
  "fs2",
  "regex",
- "reqwest",
+ "reqwest 0.12.28",
  "scratch",
  "semver",
  "zip 0.6.6",
@@ -11815,7 +11969,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -12412,6 +12566,88 @@ name = "wit-bindgen"
 version = "0.51.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
+dependencies = [
+ "wit-bindgen-rust-macro",
+]
+
+[[package]]
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+checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
+dependencies = [
+ "anyhow",
+ "heck 0.5.0",
+ "wit-parser",
+]
+
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+ "anyhow",
+ "heck 0.5.0",
+ "indexmap 2.13.0",
+ "prettyplease",
+ "syn 2.0.114",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
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+
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+ "anyhow",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+ "wit-bindgen-core",
+ "wit-bindgen-rust",
+]
+
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+ "anyhow",
+ "bitflags 2.10.0",
+ "indexmap 2.13.0",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
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+ "indexmap 2.13.0",
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+]
 
 [[package]]
 name = "wl-clipboard-rs"
diff --git a/codex-rs/Cargo.toml b/codex-rs/Cargo.toml
index 32ae50bfb71e..63b8e25fb851 100644
--- a/codex-rs/Cargo.toml
+++ b/codex-rs/Cargo.toml
@@ -277,7 +277,7 @@ ratatui-macros = "0.6.0"
 regex = "1.12.3"
 regex-lite = "0.1.8"
 reqwest = "0.12"
-rmcp = { version = "0.15.0", default-features = false }
+rmcp = { version = "1.4.0", default-features = false }
 runfiles = { git = "https://github.com/dzbarsky/rules_rust", rev = "b56cbaa8465e74127f1ea216f813cd377295ad81" }
 rustls = { version = "0.23", default-features = false, features = [
     "ring",