Sunglasses is a filter that sits ahead of every agent in your CrewAI crew. Always ON. Every message an agent sends or receives — the filter scans first. This page walks through the CrewAI wiring.
Who this page is for
CrewAI devs running multi-agent crews where agents pass work to each other. Cross-agent injection, forged handoff tickets, and replayed approval receipts are real attack surfaces in A2A workflows. The filter sits between agents and scans every message before it becomes an action.
The command
from sunglasses.integrations.crewai import sunglasses_scan
Filter between every agent in the crew. Add the filter to your Task or Crew definition. Every message passing between agents — researcher to writer, planner to executor, any handoff — gets scanned before the downstream agent acts on it.
Benefit: A2A is the easy part. Trust is the hard part. The filter turns every inter-agent message into a scanned input, not an implicitly trusted one.
Full walkthrough coming next. This is an identity-first scaffold — the core command and wiring pattern are ready. The full step-by-step code walkthrough, integration examples, and troubleshooting section are being drafted now. Check back shortly.
Where this wiring fits
Sunglasses is one filter with four wiring options. This page covers the CrewAI path. Other wiring paths:
- Claude Code / Claude Desktop — MCP server registration
- LangChain — mandatory callback filter
- CrewAI — between-agent filter for multi-agent crews
- Custom Python agent — SDK middleware for any LLM call
Same filter underneath. Different wiring based on your stack.