diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 89c4009..8fda881 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -140,6 +140,31 @@ jobs:
             echo "CU usage has changed. Please run `cargo bench` and commit the new results.";
             exit 1;
           fi
+  
+  fd_conformance:
+    name: Builtin-BPF Conformance Test
+    runs-on: ubuntu-latest
+    needs: build_programs
+    steps:
+      - name: Git Checkout
+        uses: actions/checkout@v4
+      
+      - name: Setup Environment
+        uses: ./.github/actions/setup
+        with:
+          cargo-cache-key: cargo-program-conformance
+          cargo-cache-fallback-key: cargo-programs
+          solana: true
+      
+      - name: Restore Program Builds
+        uses: actions/cache/restore@v4
+        with:
+          path: ./**/*.so
+          key: ${{ runner.os }}-builds-${{ github.sha }}
+      
+      - name: Builtin-BPF Conformance Test
+        shell: bash
+        run: pnpm zx ./scripts/ci/fd-conformance.mjs
 
   ## SKIP: IDL is hand-cranked here for now.
   ##
diff --git a/.gitignore b/.gitignore
index 70487d2..74673ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@
 node_modules
 test-ledger
 dist
+solana-conformance
diff --git a/Cargo.toml b/Cargo.toml
index 8d32cda..020aeaa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,8 @@
 [workspace]
 resolver = "2"
 members = ["clients/rust", "program"]
+# Required for CI
+exclude = ["solana-conformance/impl/solfuzz-agave"]
 
 [workspace.metadata.cli]
 solana = "2.0.2"
diff --git a/scripts/ci/fd-conformance.mjs b/scripts/ci/fd-conformance.mjs
new file mode 100644
index 0000000..3ca7672
--- /dev/null
+++ b/scripts/ci/fd-conformance.mjs
@@ -0,0 +1,85 @@
+#!/usr/bin/env zx
+
+// Firedancer conformance testing of the Core BPF Config program against its
+// original builtin implementation.
+//
+// Note: This script can only be run on Ubuntu.
+
+import 'zx/globals';
+import { getProgramId, getProgramSharedObjectPath, workingDirectory } from '../utils.mjs';
+
+// Clone the conformance harness.
+const harnessPath = path.join(workingDirectory, 'solana-conformance');
+await $`git clone https://github.com/firedancer-io/solana-conformance.git`;
+
+// Clone the test vectors.
+const testVectorsPath = path.join(harnessPath, 'impl', 'test-vectors');
+await $`git clone https://github.com/firedancer-io/test-vectors.git ${testVectorsPath}`;
+
+// Remove the fixtures we want to skip.
+const fixturesPath = path.join(testVectorsPath, 'instr', 'fixtures', 'config');
+const skipFixtures = [
+    // These fixtures provide executable config accounts, which we know is a
+    // case that can't manifest under the Solana protocol.
+    '04a0b782cb1f4b1be044313331edda9dfb4696d6.fix',
+    'c7ec10c03d5faadcebd32dc5b9a4086abef892ca_3157979.fix',
+    '68e8dbf0f31de69a2bd1d2c0fe9af3ba676301d6_3157979.fix',
+    'f84b5ad44f7a253ebc8056d06396694370a7fa4c_3157979.fix',
+    '8bbe900444c675cfc3fbf0f80ae2eb061e536a09.fix',
+];
+for (const fixture of skipFixtures) {
+    await $`rm -f ${path.join(fixturesPath, fixture)}`;
+}
+
+// Clone the SolFuzz-Agave harness.
+const solFuzzAgavePath = path.join(harnessPath, 'impl', 'solfuzz-agave');
+await $`git clone -b agave-v2.1.0 http://github.com/firedancer-io/solfuzz-agave.git ${solFuzzAgavePath}`;
+
+// Fetch protobuf files.
+await $`make -j -C ${solFuzzAgavePath} fetch_proto`
+
+// Move into the conformance harness.
+cd(harnessPath);
+
+// Build the environment.
+await $`bash install_ubuntu_lite.sh`;
+
+const solFuzzAgaveManifestPath = path.join(solFuzzAgavePath, 'Cargo.toml');
+const solFuzzAgaveTargetPath = path.join(
+    solFuzzAgavePath,
+    'target',
+    'x86_64-unknown-linux-gnu',
+    'release',
+    'libsolfuzz_agave.so',
+);
+
+const testTargetsDir = path.join(harnessPath, 'impl', 'lib');
+await $`mkdir -p ${testTargetsDir}`;
+
+// Build the Agave target with the builtin version.
+const testTargetPathBuiltin = path.join(testTargetsDir, 'builtin.so');
+await $`cargo build --manifest-path ${solFuzzAgaveManifestPath} \
+        --lib --release --target x86_64-unknown-linux-gnu`;
+await $`mv ${solFuzzAgaveTargetPath} ${testTargetPathBuiltin}`;
+
+// Build the Agave target with the BPF version.
+const testTargetPathCoreBpf = path.join(testTargetsDir, 'core_bpf.so');
+await $`CORE_BPF_PROGRAM_ID=${getProgramId('program')} \
+        CORE_BPF_TARGET=${getProgramSharedObjectPath('program')} \
+        FORCE_RECOMPILE=true \
+        cargo build --manifest-path ${solFuzzAgaveManifestPath} \
+        --lib --release --target x86_64-unknown-linux-gnu --features core-bpf`;
+await $`mv ${solFuzzAgaveTargetPath} ${testTargetPathCoreBpf}`;
+
+// Run the tests.
+await $`source test_suite_env/bin/activate && \
+        solana-test-suite run-tests \
+        -i ${fixturesPath} -s ${testTargetPathBuiltin} -t ${testTargetPathCoreBpf}`;
+
+// Assert conformance.
+// There should be no fixtures in the `failed_protobufs` directory.
+if (fs.readdirSync('test_results/failed_protobufs').length > 0) {
+    throw new Error(`Error: mismatches detected.`);
+} else {
+    console.log('All tests passed.');
+}
diff --git a/scripts/utils.mjs b/scripts/utils.mjs
index 44ee564..77bba9a 100644
--- a/scripts/utils.mjs
+++ b/scripts/utils.mjs
@@ -70,6 +70,27 @@ export function getAllProgramFolders() {
   );
 }
 
+export function getProgramId(folder) {
+  return getCargoMetadata(folder)?.solana?.['program-id'];
+}
+
+export function getProgramName(folder) {
+  return getCargo(folder).package?.name;
+}
+
+export function getProgramSharedObjectName(folder) {
+  return `${getProgramName(folder).replace(/-/g, '_')}.so`;
+}
+
+export function getProgramSharedObjectPath(folder) {
+  return path.join(
+    workingDirectory,
+    'target',
+    'deploy',
+    getProgramSharedObjectName(folder),
+  );
+}
+
 export function getCargo(folder) {
   return parseToml(
     fs.readFileSync(