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# Source code for langchain_community.agent_toolkits.json.base

    """Json agent."""
    from __future__ import annotations

    from typing import TYPE_CHECKING, Any, Dict, List, Optional

    from langchain_core.callbacks import BaseCallbackManager
    from langchain_core.language_models import BaseLanguageModel

    from langchain_community.agent_toolkits.json.prompt import JSON_PREFIX, JSON_SUFFIX
    from langchain_community.agent_toolkits.json.toolkit import JsonToolkit

    if TYPE_CHECKING:
        from langchain.agents.agent import AgentExecutor

    def create_json_agent(
        llm: BaseLanguageModel,
        toolkit: JsonToolkit,
        callback_manager: Optional[BaseCallbackManager] = None,
        prefix: str = JSON_PREFIX,
        suffix: str = JSON_SUFFIX,
        format_instructions: Optional[str] = None,
        input_variables: Optional[List[str]] = None,
        verbose: bool = False,
        agent_executor_kwargs: Optional[Dict[str, Any]] = None,
        **kwargs: Any,
    ) -> AgentExecutor:
        """Construct a json agent from an LLM and tools."""
        from langchain.agents.agent import AgentExecutor
        from langchain.agents.mrkl.base import ZeroShotAgent
        from langchain.chains.llm import LLMChain

        tools = toolkit.get_tools()
        prompt_params = (
            {"format_instructions": format_instructions}
            if format_instructions is not None
            else {}
        )
        prompt = ZeroShotAgent.create_prompt(
            tools,
            prefix=prefix,
            suffix=suffix,
            input_variables=input_variables,
            **prompt_params,
        )
        llm_chain = LLMChain(
            llm=llm,
            prompt=prompt,
            callback_manager=callback_manager,
        )
        tool_names = [tool.name for tool in tools]
        agent = ZeroShotAgent(llm_chain=llm_chain, allowed_tools=tool_names, **kwargs)
        return AgentExecutor.from_agent_and_tools(
            agent=agent,
            tools=tools,
            callback_manager=callback_manager,
            verbose=verbose,
            **(agent_executor_kwargs or {}),
        )