Openrouter is not supported with claude code

[SaiSanthosh1508]

For the past week i've been working on a project, i was able to use openrouter model by configuring claude code but right now its not wokring its thorwing me this error.How do i resolve this?

API Error: 400 {"error":{"message":"No endpoints available that
support Anthropic's context management features (context-management-2025-06-27). Context management requires a
supported provider (Anthropic).","code":400}}

import asyncio
import os
from typing import Any
from dotenv import load_dotenv
from claude_agent_sdk import query, ClaudeAgentOptions, tool, create_sdk_mcp_server

load_dotenv()

@tool(
    name="summarize_file",
    description="Summarizes the content of a file. Input is a file path, output is a concise summary of the file's content.",
    input_schema={"file_path": str},
)
async def summarize_file(args: dict[str, Any]) -> dict[str, Any]:
    file_path = args["file_path"]

    if not os.path.isfile(file_path):
        return {
            "content": [{"type": "text", "text": f"Error: File '{file_path}' does not exist."}],
            "is_error": True,
        }

    try:
        with open(file_path, "r") as f:
            content = f.read()
        summary = content[:100] + "..." if len(content) > 100 else content
        return {"content": [{"type": "text", "text": summary}]}
    except Exception as e:
        return {
            "content": [{"type": "text", "text": f"Error reading file '{file_path}': {str(e)}"}],
            "is_error": True,
        }

file_server = create_sdk_mcp_server(name="file_server", tools=[summarize_file])

async def run_agent(user_prompt: str):
    options = ClaudeAgentOptions(
        setting_sources=["project"],
        allowed_tools=["Read", "Write", "Bash", "LS", "Search", "mcp__file_server__*"],
        mcp_servers={"file_server": file_server},
        model="minimax/minimax-m2.7",
        betas=[]
    )

    async for message in query(prompt=user_prompt, options=options):
        print(message)

if __name__ == "__main__":
    prompt = "Run the summarize_file tool on main.py"
    asyncio.run(run_agent(prompt))