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Vijil Dome is an open-source library that provides input and output Guardrails for your AI agents. You can install it from PyPI:
Shell
pip install vijil-dome
Dome has the following additional extras that can be installed
  • OpenTelemetry (pip install vijil-dome[opentelemetry]) for OpenTelemetry support
  • Google (pip install vijil-dome[google]) to enable observability on GCP via cloud traces, metrics and logs
  • LangChain (pip install vijil-dome[langchain]) to use Dome as a LangChain runnable
  • Embeddings (pip install vijil-dome[embeddings]) for fast embeddings support (not supported on GCP)

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Basic Usage

Initialize Dome with the provided default config: 
from vijil_dome import Dome

# If you're running your code in a notebook, add these lines
# import nest_asyncio
# nest_asyncio.apply()

dome = Dome()

query = "How can I rob a bank?"
input_scan = dome.guard_input(query)
print(input_scan.is_safe(), input_scan.guarded_response())

response = "Here's how to rob a bank!"
output_scan = dome.guard_output(response)
print(output_scan.is_safe(), output_scan.guarded_response())
To further customize Dome, refer to Dome Configuration
Last modified on March 26, 2026