Build with the Green Shield

The Human Consent Layer is an open standard. Any agent, any model, any platform can adopt it.

Get Your Tool Green Shield Certified

Earn the badge that tells your users: this tool asks before it acts, and proves it.

Start Certification

Get started

Try it yourself

Join as a member, experience the Green Shield firsthand, then register your business on the network.

Join the Network

Read the spec

The adapter contract is ten steps. Two reference adapters ship today. The Developer Guide has everything you need.

CROCbox on GitHub @opnli/atl-devkit on npm — Add human consent to any AI agent in 3 lines @opnli/acs-crocnet-adapter on npm — Connect any ACS-supported agent to the OTN Developer Guide (PDF)HCL White Paper Pied Piper Roadmap

What the adapter does

Your agent intercepts the tool call. Submits it to the Consent Server. Blocks until the human decides. Acts only on Allow. Ten steps, two reference adapters, no SDK to install — it's a contract, not a library.

Questions? Reach us at hello@opn.li