diff --git a/integration_tests/tests/indexer_ffi_state_consistency.rs b/integration_tests/tests/indexer_ffi_state_consistency.rs
index f84a3790..0a41c68c 100644
--- a/integration_tests/tests/indexer_ffi_state_consistency.rs
+++ b/integration_tests/tests/indexer_ffi_state_consistency.rs
@@ -8,7 +8,6 @@
 use std::time::Duration;
 
 use anyhow::{Context as _, Result};
-use indexer_ffi::Runtime;
 use indexer_service_protocol::Account;
 use integration_tests::{
     L2_TO_L1_TIMEOUT, TIME_TO_WAIT_FOR_BLOCK_SECONDS, private_mention, public_mention,
@@ -102,11 +101,8 @@ fn indexer_ffi_state_consistency() -> Result<()> {
     info!("Waiting for indexer to parse blocks");
     std::thread::sleep(L2_TO_L1_TIMEOUT);
 
-    // Safety: ctx runtime is valid for the lifetime of the returned Runtime
-    let runtime = unsafe { Runtime::from_borrowed(ctx.runtime()) };
     let acc1_ind_state_ffi = unsafe {
         indexer_ffi_helpers::query_account(
-            &raw const runtime,
             &raw const indexer_ffi,
             (&ctx.ctx().existing_public_accounts()[0]).into(),
         )
@@ -119,7 +115,6 @@ fn indexer_ffi_state_consistency() -> Result<()> {
 
     let acc2_ind_state_ffi = unsafe {
         indexer_ffi_helpers::query_account(
-            &raw const runtime,
             &raw const indexer_ffi,
             (&ctx.ctx().existing_public_accounts()[1]).into(),
         )
diff --git a/integration_tests/tests/indexer_ffi_state_consistency_with_labels.rs b/integration_tests/tests/indexer_ffi_state_consistency_with_labels.rs
index 34d5a4d7..fbc0b422 100644
--- a/integration_tests/tests/indexer_ffi_state_consistency_with_labels.rs
+++ b/integration_tests/tests/indexer_ffi_state_consistency_with_labels.rs
@@ -8,7 +8,6 @@
 use std::time::Duration;
 
 use anyhow::Result;
-use indexer_ffi::Runtime;
 use indexer_service_protocol::Account;
 use integration_tests::{L2_TO_L1_TIMEOUT, TIME_TO_WAIT_FOR_BLOCK_SECONDS, public_mention};
 use log::info;
@@ -75,11 +74,8 @@ fn indexer_ffi_state_consistency_with_labels() -> Result<()> {
     info!("Waiting for indexer to parse blocks");
     std::thread::sleep(L2_TO_L1_TIMEOUT);
 
-    // Safety: ctx runtime is valid for the lifetime of the returned Runtime
-    let runtime = unsafe { Runtime::from_borrowed(ctx.runtime()) };
     let acc1_ind_state_ffi = unsafe {
         indexer_ffi_helpers::query_account(
-            &raw const runtime,
             &raw const indexer_ffi,
             (&ctx.ctx().existing_public_accounts()[0]).into(),
         )
diff --git a/lez/indexer/ffi/indexer_ffi.h b/lez/indexer/ffi/indexer_ffi.h
index 06953e39..04d33b33 100644
--- a/lez/indexer/ffi/indexer_ffi.h
+++ b/lez/indexer/ffi/indexer_ffi.h
@@ -464,18 +464,18 @@ struct PointerResult_Runtime__OperationStatus new_runtime(void);
 enum OperationStatus stop_indexer(struct IndexerServiceFFI *indexer);
 
 /**
- * Initializes the FFI's logger.
+ * Initializes logging for the indexer at `level`.
  *
- * Wires up `env_logger`, so the library's `log::*` output is controlled by the
- * `RUST_LOG` environment variable (e.g. `RUST_LOG=info`). Without this, the
- * FFI's log calls go nowhere — and since failures are otherwise reported only
- * as numeric [`OperationStatus`](crate::errors::OperationStatus) codes, there
- * is no other way to see *why* a call failed.
+ * - `level` is a null-terminated string (`off`/`error`/`warn`/`info`/`debug`/ `trace`,
+ *   case-insensitive); null or unparseable falls back to `info`.
  *
- * Safe to call multiple times and from any consumer: if a global logger is
- * already set, the call is a no-op.
+ * Only the `indexer_ffi` and `indexer_core` targets are enabled!
+ *
+ * # Safety
+ * - `level` must be a valid null-terminated C string, or null.
+ * - First call to this function wins; subsequent calls are no-ops.
  */
-void init_logger(void);
+void init_logger(const char *level);
 
 /**
  * # Safety
diff --git a/lez/indexer/ffi/src/api/logging.rs b/lez/indexer/ffi/src/api/logging.rs
index 207d4b61..34bc5f76 100644
--- a/lez/indexer/ffi/src/api/logging.rs
+++ b/lez/indexer/ffi/src/api/logging.rs
@@ -1,14 +1,33 @@
-/// Initializes the FFI's logger.
+use std::ffi::{CStr, c_char};
+
+use log::LevelFilter;
+
+/// Initializes logging for the indexer at `level`.
 ///
-/// Wires up `env_logger`, so the library's `log::*` output is controlled by the
-/// `RUST_LOG` environment variable (e.g. `RUST_LOG=info`). Without this, the
-/// FFI's log calls go nowhere — and since failures are otherwise reported only
-/// as numeric [`OperationStatus`](crate::errors::OperationStatus) codes, there
-/// is no other way to see *why* a call failed.
+/// - `level` is a null-terminated string (`off`/`error`/`warn`/`info`/`debug`/ `trace`,
+///   case-insensitive); null or unparseable falls back to `info`.
 ///
-/// Safe to call multiple times and from any consumer: if a global logger is
-/// already set, the call is a no-op.
+/// Only the `indexer_ffi` and `indexer_core` targets are enabled!
+///
+/// # Safety
+/// - `level` must be a valid null-terminated C string, or null.
+/// - First call to this function wins; subsequent calls are no-ops.
 #[unsafe(no_mangle)]
-pub extern "C" fn init_logger() {
-    let _ignore_me = env_logger::try_init();
+pub unsafe extern "C" fn init_logger(level: *const c_char) {
+    let level = if level.is_null() {
+        LevelFilter::Info
+    } else {
+        unsafe { CStr::from_ptr(level) }
+            .to_str()
+            .ok()
+            .and_then(|s| s.parse().ok())
+            .unwrap_or(LevelFilter::Info)
+    };
+
+    env_logger::Builder::new()
+        .filter_level(LevelFilter::Off)
+        .filter_module("indexer_ffi", level)
+        .filter_module("indexer_core", level)
+        .try_init()
+        .ok();
 }