diff --git a/chaind/eth/chain.py b/chaind/eth/chain.py
new file mode 100644
index 0000000..d9171cd
--- /dev/null
+++ b/chaind/eth/chain.py
@@ -0,0 +1,18 @@
+# external imports
+from chainlib.interface import ChainInterface
+from chainlib.eth.block import (
+        block_by_number,
+        Block,
+        )
+from chainlib.eth.tx import (
+        receipt,
+        Tx,
+        )
+
+class EthChainInterface(ChainInterface):
+
+    def __init__(self):
+        self._block_by_number = block_by_number
+        self._block_from_src = Block.from_src
+        self._tx_receipt = receipt
+        self._src_normalize = Tx.src_normalize
diff --git a/chaind/eth/data/config/config.ini b/chaind/eth/data/config/config.ini
new file mode 100644
index 0000000..879daa3
--- /dev/null
+++ b/chaind/eth/data/config/config.ini
@@ -0,0 +1,16 @@
+[session]
+socket_path =
+runtime_dir =
+id =
+data_dir =
+dispatch_delay = 0.01
+
+[database]
+engine =
+name = chaind
+driver =
+user =
+password =
+host =
+port =
+debug = 0
diff --git a/chaind/eth/runnable/syncer.py b/chaind/eth/runnable/syncer.py
new file mode 100644
index 0000000..81507bf
--- /dev/null
+++ b/chaind/eth/runnable/syncer.py
@@ -0,0 +1,115 @@
+# standard imports
+import os
+import logging
+
+# external imports
+import chainlib.eth.cli
+from chaind.setup import Environment
+from chaind.filter import StateFilter
+from chaind.adapters.fs import ChaindFsAdapter
+from chainlib.eth.block import block_latest
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.chain import ChainSpec
+from hexathon import strip_0x
+from chainsyncer.store.fs import SyncFsStore
+from chainsyncer.driver.chain_interface import ChainInterfaceDriver
+
+# local imports
+from chaind.eth.cache import EthCacheTx
+from chaind.eth.chain import EthChainInterface
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+env = Environment(domain='eth', env=os.environ)
+
+arg_flags = chainlib.eth.cli.argflag_std_read
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--data-dir', type=str, help='data directory')
+argparser.add_argument('--runtime-dir', type=str, help='runtime directory')
+argparser.add_argument('--session-id', dest='session_id', type=str, help='session identifier')
+argparser.add_argument('--dispatch-delay', dest='dispatch_delay', type=float, help='socket timeout before processing queue')
+argparser.add_argument('--offset', type=int, default=0, help='Start sync on this block')
+argparser.add_argument('--until', type=int, default=0, help='Terminate sync on this block')
+argparser.add_argument('--head', action='store_true', help='Start at current block height (overrides --offset, assumes --keep-alive)')
+argparser.add_argument('--keep-alive', action='store_true', dest='keep_alive', help='Continue to sync head after history sync complete')
+args = argparser.parse_args()
+extra_args = {
+    'runtime_dir': 'SESSION_RUNTIME_DIR',
+    'data_dir': 'SESSION_DATA_DIR',
+    'session_id': 'SESSION_ID', 
+    'dispatch_delay': 'SESSION_DISPATCH_DELAY',
+        }
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
+if config.get('SESSION_ID') == None:
+    config.add(env.session, 'SESSION_ID', exists_ok=True)
+if config.get('SESSION_RUNTIME_DIR') == None:
+    config.add(env.runtime_dir, 'SESSION_RUNTIME_DIR', exists_ok=True)
+if config.get('SESSION_DATA_DIR') == None:
+    config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
+if not config.get('SESSION_SOCKET_PATH'):
+    socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
+    config.add(socket_path, 'SESSION_SOCKET_PATH', True)
+config.add(args.keep_alive, '_KEEP_ALIVE', True)
+config.add(args.head, '_HEAD', True)
+config.add(args.offset, '_SYNC_OFFSET', True)
+
+logg.debug('config loaded:\n{}'.format(config))
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+conn = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
+
+
+def main():
+    o = block_latest()
+    r = conn.do(o)
+    block_offset = int(strip_0x(r), 16) + 1
+    logg.info('network block height is {}'.format(block_offset))
+
+    keep_alive = False
+    session_block_offset = 0
+    block_limit = 0
+    if args.head:
+        session_block_offset = block_offset
+        block_limit = -1
+        keep_alive = True
+    else:
+        session_block_offset = args.offset
+
+    if args.until > 0:
+        if not args.head and args.until <= session_block_offset:
+            raise ValueError('sync termination block number must be later than offset ({} >= {})'.format(session_block_offset, args.until))
+        block_limit = args.until
+    elif config.true('_KEEP_ALIVE'):
+        keep_alive=True
+        block_limit = -1
+
+    if session_block_offset == -1:
+        session_block_offset = block_offset
+    elif not config.true('_KEEP_ALIVE'):
+        if block_limit == 0:
+            block_limit = block_offset
+
+    queue_adapter = ChaindFsAdapter(
+        chain_spec,
+        config.get('SESSION_DATA_DIR'),
+        EthCacheTx,
+        None,
+        )
+    fltr = StateFilter(queue_adapter)
+    sync_store = SyncFsStore(config.get('SESSION_RUNTIME_DIR'), session_id=config.get('SESSION_ID'))
+    sync_store.register(fltr)
+
+    chain_interface = EthChainInterface()
+    drv = ChainInterfaceDriver(sync_store, chain_interface, offset=session_block_offset, target=block_limit)
+    drv.run(conn)
+   
+
+if __name__ == '__main__':
+    main()
diff --git a/chaind/eth/runnable/tasker.py b/chaind/eth/runnable/tasker.py
index 9a4f38b..3c52401 100644
--- a/chaind/eth/runnable/tasker.py
+++ b/chaind/eth/runnable/tasker.py
@@ -51,7 +51,6 @@ extra_args = {
     'session_id': 'SESSION_ID', 
     'dispatch_delay': 'SESSION_DISPATCH_DELAY',
         }
-#config = chainlib.eth.cli.Config.from_args(args, arg_flags, default_config_dir=config_dir, extend_base_config_dir=config_dir)
 config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
 
 logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
@@ -65,11 +64,6 @@ if not config.get('SESSION_SOCKET_PATH'):
     socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
     config.add(socket_path, 'SESSION_SOCKET_PATH', True)
 
-if config.get('DATABASE_ENGINE') == 'sqlite':
-    #config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
-    config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
-    
-config.censor('PASSWORD', 'DATABASE')
 logg.debug('config loaded:\n{}'.format(config))
 
 def process_outgoing(chain_spec, adapter, rpc, limit=100):
@@ -120,7 +114,12 @@ def main():
             ctrl.process(conn)
             continue
 
-        tx_hash = queue_adapter.put(r.hex())
+        try:
+            tx_hash = queue_adapter.put(r.hex())
+        except Exception as e:
+            logg.error('adapter rejected input {}: "{}"'.format(r.hex(), e))
+            continue
+
         queue_adapter.enqueue(tx_hash)