The web3 extension imports, and says what is missing

eth-account was declared nowhere, so importing the shipped extension
failed on a clean install and its tests took the suite's collection with
them. It is a web3 extra now, which dev names once.

web3_agent and web3_network are no longer exported: they are written
against an agent model this package does not have — InferenceResult,
State, Router, RouterFn, a network module, and two sibling modules that
do not exist either. Importing them from the package __init__ made all
of it unimportable, including the two modules that are sound. Whether
this SDK grows a network model is a decision, not a rename.

Co-authored-by: Hanzo Dev <[email protected]>

sdk/python/hanzo_agents/extensions/web3/__init__.py

@@ -1,6 +1,20 @@
 """Web3 integration for Hanzo agents.
 
-Provides wallet management, transaction handling, and Web3-enabled agents.
+Provides wallet management, transaction handling, and MPC custody.
+
+``web3_agent`` and ``web3_network`` are NOT exported here. They are written
+against an agent model this package does not have: they import
+``hanzo_agents.agent.InferenceResult``, ``hanzo_agents.execution_context.State``,
+``hanzo_agents.router.Router``/``RouterFn`` and ``hanzo_agents.network``, and
+none of those exist. An agent here serves reasoners and skills over HTTP; those
+two describe a router stepping a network of agents over shared state, which is
+a different design and not one this SDK can be made to satisfy by renaming
+imports.
+
+Importing either from this package's ``__init__`` made every module in it
+unimportable, including the four that are sound — and took the whole test
+suite's collection down with them. Whether this SDK grows a network model, or
+those two modules go, is a decision to make rather than a rename to guess at.
 """
 
 from .wallet import (
@@ -11,8 +25,6 @@ from .wallet import (
     derive_agent_wallet,
     generate_shared_mnemonic,
 )
-from .web3_agent import Web3Agent, Web3AgentConfig
-from .web3_network import Web3Network
 
 __all__ = [
     "AgentWallet",
@@ -21,7 +33,4 @@ __all__ = [
     "create_wallet_tool",
     "derive_agent_wallet",
     "generate_shared_mnemonic",
-    "Web3Agent",
-    "Web3AgentConfig",
-    "Web3Network",
 ]

sdk/python/pyproject.toml

@@ -51,7 +51,16 @@ include = ["hanzo_agents*"]
 exclude = ["tests*", "examples*"]
 
 [project.optional-dependencies]
+# The web3 extension imports eth_account at module scope, so importing
+# hanzo_agents.extensions.web3 from a clean install failed until this existed —
+# and its tests took the whole suite's collection down with them.
+web3 = [
+    "eth-account>=0.11,<1",
+]
 dev = [
+    # Named once, here, so the dev environment can run every test this project
+    # ships rather than most of them.
+    "hanzo-agents[web3]",
     "pytest>=7.4,<9",
     "pytest-asyncio>=0.21,<0.24",
     "pytest-cov>=4.1,<5",