ExecutorToolNode breaks on langgraph-prebuilt >= 1.1.0: ToolNode._extract_state() missing required 'config' argument

[WilliamBenEmbarek]

Summary

ExecutorToolNode (which subclasses langgraph.prebuilt.ToolNode) calls the private
self._extract_state(input) with a single argument. In langgraph-prebuilt 1.1.0 the
signature changed to _extract_state(self, input, config) with config required, so
every tool execution now raises:

TypeError: ToolNode._extract_state() missing 1 required positional argument: 'config'

This breaks all mobile-use tasks the moment langgraph-prebuilt resolves to 1.1.0 or newer.

Environment

• minitap-mobile-use==3.6.3 (latest on PyPI)
• langgraph-prebuilt==1.1.0 (pulled transitively by langgraph>=1.2.4, e.g. via langchain>=1.3.9)
• Python 3.12

Your declared constraint is langgraph>=1.0.2,<2.0.0, which permits 1.1.x/1.2.x, so any
downstream project on a recent langchain/langgraph will hit this.

Root cause

minitap/mobile_use/agents/executor/tool_node.py, in _build_tool_runtime (~line 57):

def _build_tool_runtime(self, call, input, config, runtime):
    state = self._extract_state(input)          # <-- one arg
    return ToolRuntime(state=state, ..., config=config, ...)

In langgraph-prebuilt 1.0.x the base method was _extract_state(self, input) — this worked.

In 1.1.0 it became:

def _extract_state(self, input, config: RunnableConfig) -> ...:
    # config is now used to hydrate state from channels (CONFIG_KEY_READ)
    # when input is a list of ToolCall dicts (new Send payload shape)

So config is now both required and functionally used.

Reproduction

# with langgraph-prebuilt>=1.1.0 installed
from minitap.mobile_use.sdk.agent import Agent
# ... run any task; it fails inside ExecutorToolNode._build_tool_runtime

Suggested fix

_build_tool_runtime already receives config, so it can be forwarded directly:

state = self._extract_state(input, config)

To stay compatible with both 1.0.x and 1.1.x, a version-guarded call works:

import inspect

if "config" in inspect.signature(super()._extract_state).parameters:
    state = self._extract_state(input, config)
else:
    state = self._extract_state(input)

It's also worth reviewing the other private-API overrides in this class
(_afunc, _func, _parse_input, _run_one/_arun_one, _combine_tool_outputs)
against 1.1.0, and tightening the langgraph constraint (e.g. <1.1) until the class is
confirmed compatible, so downstream resolvers don't silently pull an incompatible version.

Workaround (for downstream users, until this is released)

Pin below the break:

langgraph-prebuilt<1.1
langgraph<1.1   # e.g. langgraph==1.0.10; also hold langchain<1.3 since langchain>=1.3.9 requires langgraph>=1.2.4

[samarth70]

Confirmed — verified against langgraph-prebuilt 1.1.0: ToolNode._extract_state now has signature (self, input, config), while ExecutorToolNode._build_tool_runtime calls self._extract_state(input), so every tool execution raises TypeError: ToolNode._extract_state() missing 1 required positional argument: 'config' once the floating langgraph>=1.0.2,<2.0.0 pin resolves to 1.1.x.

Since config is already a parameter of _build_tool_runtime, forwarding it is the minimal fix. Opening a PR with the one-line fix plus a regression test that reproduces the reported TypeError.