diff --git a/python/eth_accounts_index/registry.py b/python/eth_accounts_index/registry.py
index 19bfc0d..f42984e 100644
--- a/python/eth_accounts_index/registry.py
+++ b/python/eth_accounts_index/registry.py
@@ -72,6 +72,10 @@ class AccountRegistry:
         return r != 0
 
 
+    def get_index(self, i):
+        return self.contract.functions.accounts(i).call()
+
+
     def last(self, n):
         c = self.count()
         lo = c - n - 1
diff --git a/python/eth_accounts_index/runnable/add.py b/python/eth_accounts_index/runnable/add.py
index d1fbfde..d44f237 100644
--- a/python/eth_accounts_index/runnable/add.py
+++ b/python/eth_accounts_index/runnable/add.py
@@ -16,6 +16,7 @@ import web3
 from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
 from crypto_dev_signer.keystore import DictKeystore
 from crypto_dev_signer.eth.helper import EthTxExecutor
+from chainlib.chain import ChainSpec
 
 logging.basicConfig(level=logging.WARNING)
 logg = logging.getLogger()
@@ -59,8 +60,8 @@ if args.y != None:
     logg.debug('now have key for signer address {}'.format(signer_address))
 signer = EIP155Signer(keystore)
 
-chain_pair = args.i.split(':')
-chain_id = int(chain_pair[1])
+chain_spec = ChainSpec.from_chain_str(args.i)
+chain_id = chain_spec.network_id()
 
 helper = EthTxExecutor(
         w3,
diff --git a/python/eth_accounts_index/runnable/deploy.py b/python/eth_accounts_index/runnable/deploy.py
index 2e560a2..74c1231 100644
--- a/python/eth_accounts_index/runnable/deploy.py
+++ b/python/eth_accounts_index/runnable/deploy.py
@@ -16,6 +16,7 @@ import web3
 from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
 from crypto_dev_signer.keystore import DictKeystore
 from crypto_dev_signer.eth.helper import EthTxExecutor
+from chainlib.chain import ChainSpec
 
 logging.basicConfig(level=logging.WARNING)
 logg = logging.getLogger()
@@ -59,8 +60,8 @@ if args.y != None:
     logg.debug('now have key for signer address {}'.format(signer_address))
 signer = EIP155Signer(keystore)
 
-chain_pair = args.i.split(':')
-chain_id = int(chain_pair[1])
+chain_spec = ChainSpec.from_chain_str(args.i)
+chain_id = chain_spec.network_id()
 
 helper = EthTxExecutor(
         w3,
diff --git a/python/requirements.txt b/python/requirements.txt
index 1ef2087..24b729d 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,2 +1,3 @@
-confini==0.3.4
+confini~=0.3.6rc1
 web3==5.12.2
+chainlib~=0.0.1a16
diff --git a/python/setup.cfg b/python/setup.cfg
index abe0eb6..93356d2 100644
--- a/python/setup.cfg
+++ b/python/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = eth-accounts-index
-version = 0.0.10a7
+version = 0.0.10a10
 description = Accounts index evm contract tooling with permissioned writes
 author = Louis Holbrook
 author_email = dev@holbrook.no
@@ -30,6 +30,7 @@ install_requires =
 	confini~=0.3.6a1
 	web3==5.12.2
 	crypto-dev-signer~=0.4.13rc2
+	chainlib~=0.0.1a16
 tests_require = 
 	pytest==6.0.1
 	eth-tester==0.5.0b2