Getting started in 30 seconds

From the App

To get started, sign up and login to Root Signals app. Select an evaluator under Evaluators tab and Execute. You will get a score between 0 and 1 and the justification for the score.

Programmatically

Create your Root Signals API key under Settings > Developer.

In Python

pip install root-signals

Quick test

For the best experience, we encourage you to create an account. However, if you prefer to run quick tests at this point, please create a temporary API key here.

Root Signals provides over 30 evaluators or judges, which you can use to score any text based on a wealth of metrics. You can attach evaluators to an existing application with just a few lines of code.

from root import RootSignals

# Just a quick test?
# You can get a temporary API key from https://app.rootsignals.ai/demo-user 
client = RootSignals(api_key="my-developer-key")
client.evaluators.Politeness(
    response="You can find the instructions from our Careers page."
)
# {score=0.7, justification='The response is st...', execution_log_id=...}

• Python SDK Docs
• Python SDK GitHub Repo

Via REST API

You can execute evaluators in your favourite framework and tech stack via our REST API:

Root Signals MCP Server (for Agents)

Our Model Context Protocol (MCP) equips your AI agents with evaluation capabilities.

• Root Signals MCP Repo