Vext Labs · open source

Check the work. Build on it.

Vext Labs runs open-core. The spec, the verifier, and the agent SDK are public so anyone can check what we claim and build on what we ship. The model fleet and the training recipe stay ours. Three packages below, all real, all installable today.

Open core

The spec, the verifier, and the agent SDK are open. Check the work yourself. The model fleet and the training recipe stay ours.

Open sourceon npm today

Three packages. All real, all today.

Everything below is published, versioned, and installable right now. No waitlist, no beta gate.

@vextlabs/stoa-verifier Apache-2.0

The neutral receipt verifier. Check a signed Stoa record offline. The verifier is not us, so you do not have to trust us.

npx @vextlabs/stoa-verifier
v0.1.1 npm ↗
@vextlabs/theron-cli Apache-2.0

The command-line client. An agentic terminal loop that runs post-turn checks on the files it touched, then self-corrects.

npm i -g @vextlabs/theron-cli
theron
v0.6.1 npm ↗
@vextlabs/theron-agent-sdk MIT

The open agent SDK. Build any agent, against any model, with the same Council pattern and verifier kernels JUWEL runs on.

npm i @vextlabs/theron-agent-sdk
v0.4.1 npm ↗

all three ship under the @vextlabs npm scope · the long version of why the verifier isn’t us: note 07, receipts, not logs