crewai - 💡(How to fix) Fix Proposal: Tier-aware tool definitions for multi-model crews [1 comments, 1 participants]

from crewai.tools import tool

@tool("File Reader")
def file_read(path: str, encoding: str = "utf-8",
              line_numbers: bool = False, offset: int = 0) -> str:
    """Read file contents with line numbers, offset, and encoding control."""
    with open(path, encoding=encoding) as f:
        return f.read()

---

from crewai import Agent, Crew, Task
from yantrikos import BaseTool, Tier, TierRouter, register

@register
class FileReadTool(BaseTool):
    name = "file_read"
    category = "filesystem"
    descriptions = {
        Tier.S:  "Read file",
        Tier.M:  "Read a file from disk",
        Tier.L:  "Read file with encoding control",
        Tier.XL: "Read file with line numbers, offset, encoding",
    }
    parameters = {
        Tier.S:  {"path": str},
        Tier.M:  {"path": str, "encoding": str},
        Tier.L:  {"path": str, "encoding": str, "line_numbers": bool},
        Tier.XL: {"path": str, "encoding": str, "line_numbers": bool, "offset": int},
    }

# Each agent gets tools adapted to its model
researcher = Agent(
    role="Researcher",
    llm="gpt-4o",              # XL tier — gets full tool descriptions
    tools=TierRouter("gpt-4o").route("..."),
)

classifier = Agent(
    role="Classifier",
    llm="ollama/qwen2.5:1.5b", # S tier — gets minimal descriptions
    tools=TierRouter("qwen2.5:1.5b").route("..."),
)