How to add trust verification to LangChain agents
LangChain builds multi-agent systems. When Agent A needs to trust Agent B, there's no standard way to verify credentials.
UTA — Universal Trust Adapter
UTA is the USB-C of agent trust — translates between 8 credential formats:
| Format | Owner |
|---|---|
| ATC v3 | AliceLabs |
| JWT | IETF |
| W3C VC | W3C |
| A2A Card | |
| EAT-AI | IETF |
| ZTA | Anthropic |
| MCP Card | Anthropic |
| X.509 | IETF |
For LangChain specifically:
from marketnow_trust import TrustEngine
engine = TrustEngine(adapters=['atc-v3', 'jwt', 'w3c-vc'])
result = engine.verify(agent_credential)
# → { valid: True, format: 'jwt', uts: {...} }
Plus @marketnow/trust-gateway wraps MCP servers with pre-exec filter.
pip install marketnow-trust
npm install @marketnow/trust-gateway
Repo: https://github.com/alicelabs-llc/universal-trust-adapter
— Edison Flores, AliceLabs LLC
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