diff --git a/protobufs/integrity.proto b/protobufs/integrity.proto
deleted file mode 100644
index fa2c2fc..0000000
--- a/protobufs/integrity.proto
+++ /dev/null
@@ -1,50 +0,0 @@
-syntax = "proto3";
-
-package arbiter.integrity;
-
-import "google/protobuf/timestamp.proto";
-
-message IntegrityTransactionRateLimit {
-  uint32 count = 1;
-  int64 window_secs = 2;
-}
-
-message IntegrityVolumeRateLimit {
-  bytes max_volume = 1; // U256 as fixed-width 32-byte little-endian bytes
-  int64 window_secs = 2;
-}
-
-message IntegritySharedGrantSettings {
-  int32 wallet_access_id = 1;
-  uint64 chain_id = 2;
-  optional google.protobuf.Timestamp valid_from = 3;
-  optional google.protobuf.Timestamp valid_until = 4;
-  optional bytes max_gas_fee_per_gas = 5; // U256 as fixed-width 32-byte little-endian bytes
-  optional bytes max_priority_fee_per_gas = 6; // U256 as fixed-width 32-byte little-endian bytes
-  optional IntegrityTransactionRateLimit rate_limit = 7;
-}
-
-message IntegrityEtherTransferSettings {
-  repeated bytes targets = 1; // sorted list of 20-byte addresses
-  IntegrityVolumeRateLimit limit = 2;
-}
-
-message IntegrityTokenTransferSettings {
-  bytes token_contract = 1; // 20-byte address
-  optional bytes target = 2; // 20-byte address
-  repeated IntegrityVolumeRateLimit volume_limits = 3; // sorted by (window_secs, max_volume)
-}
-
-message IntegritySpecificGrant {
-  oneof grant {
-    IntegrityEtherTransferSettings ether_transfer = 1;
-    IntegrityTokenTransferSettings token_transfer = 2;
-  }
-}
-
-message IntegrityEvmGrantPayloadV1 {
-  int32 basic_grant_id = 1;
-  IntegritySharedGrantSettings shared = 2;
-  IntegritySpecificGrant specific = 3;
-  optional google.protobuf.Timestamp revoked_at = 4;
-}
diff --git a/server/crates/arbiter-proto/build.rs b/server/crates/arbiter-proto/build.rs
index 28a8048..657066c 100644
--- a/server/crates/arbiter-proto/build.rs
+++ b/server/crates/arbiter-proto/build.rs
@@ -13,7 +13,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 format!("{}/user_agent.proto", PROTOBUF_DIR),
                 format!("{}/client.proto", PROTOBUF_DIR),
                 format!("{}/evm.proto", PROTOBUF_DIR),
-                format!("{}/integrity.proto", PROTOBUF_DIR),
             ],
             &[PROTOBUF_DIR.to_string()],
         )
diff --git a/server/crates/arbiter-server/src/integrity/evm.rs b/server/crates/arbiter-server/src/integrity/evm.rs
index 4f8e44b..8a82c34 100644
--- a/server/crates/arbiter-server/src/integrity/evm.rs
+++ b/server/crates/arbiter-server/src/integrity/evm.rs
@@ -1,9 +1,4 @@
 use alloy::primitives::Address;
-use arbiter_proto::proto::integrity::{
-    IntegrityEtherTransferSettings, IntegrityEvmGrantPayloadV1, IntegritySharedGrantSettings,
-    IntegritySpecificGrant, IntegrityTokenTransferSettings, IntegrityTransactionRateLimit,
-    IntegrityVolumeRateLimit, integrity_specific_grant,
-};
 use chrono::{DateTime, Utc};
 use diesel::sqlite::Sqlite;
 use diesel::{ExpressionMethods as _, OptionalExtension as _, QueryDsl, SelectableHelper as _};
@@ -19,6 +14,88 @@ use crate::{
 
 pub const EVM_GRANT_ENTITY_KIND: &str = "evm_grant";
 
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegrityVolumeRateLimit {
+    #[prost(bytes, tag = "1")]
+    pub max_volume: Vec<u8>,
+    #[prost(int64, tag = "2")]
+    pub window_secs: i64,
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegrityTransactionRateLimit {
+    #[prost(uint32, tag = "1")]
+    pub count: u32,
+    #[prost(int64, tag = "2")]
+    pub window_secs: i64,
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegritySharedGrantSettings {
+    #[prost(int32, tag = "1")]
+    pub wallet_access_id: i32,
+    #[prost(uint64, tag = "2")]
+    pub chain_id: u64,
+    #[prost(message, optional, tag = "3")]
+    pub valid_from: Option<::prost_types::Timestamp>,
+    #[prost(message, optional, tag = "4")]
+    pub valid_until: Option<::prost_types::Timestamp>,
+    #[prost(bytes, optional, tag = "5")]
+    pub max_gas_fee_per_gas: Option<Vec<u8>>,
+    #[prost(bytes, optional, tag = "6")]
+    pub max_priority_fee_per_gas: Option<Vec<u8>>,
+    #[prost(message, optional, tag = "7")]
+    pub rate_limit: Option<IntegrityTransactionRateLimit>,
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegrityEtherTransferSettings {
+    #[prost(bytes, repeated, tag = "1")]
+    pub targets: Vec<Vec<u8>>,
+    #[prost(message, optional, tag = "2")]
+    pub limit: Option<IntegrityVolumeRateLimit>,
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegrityTokenTransferSettings {
+    #[prost(bytes, tag = "1")]
+    pub token_contract: Vec<u8>,
+    #[prost(bytes, optional, tag = "2")]
+    pub target: Option<Vec<u8>>,
+    #[prost(message, repeated, tag = "3")]
+    pub volume_limits: Vec<IntegrityVolumeRateLimit>,
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegritySpecificGrant {
+    #[prost(oneof = "integrity_specific_grant::Grant", tags = "1, 2")]
+    pub grant: Option<integrity_specific_grant::Grant>,
+}
+
+pub mod integrity_specific_grant {
+    use super::*;
+
+    #[derive(Clone, PartialEq, ::prost::Oneof)]
+    pub enum Grant {
+        #[prost(message, tag = "1")]
+        EtherTransfer(IntegrityEtherTransferSettings),
+        #[prost(message, tag = "2")]
+        TokenTransfer(IntegrityTokenTransferSettings),
+    }
+}
+
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct IntegrityEvmGrantPayloadV1 {
+    #[prost(int32, tag = "1")]
+    pub basic_grant_id: i32,
+    #[prost(message, optional, tag = "2")]
+    pub shared: Option<IntegritySharedGrantSettings>,
+    #[prost(message, optional, tag = "3")]
+    pub specific: Option<IntegritySpecificGrant>,
+    #[prost(message, optional, tag = "4")]
+    pub revoked_at: Option<::prost_types::Timestamp>,
+}
+
 #[derive(Debug, Clone)]
 pub struct SignedEvmGrant {
     pub basic_grant_id: i32,