xybern 2.0.1

Identity & authorisation infrastructure for AI agents — install once, discover every agent, authorise every action.

Xybern

Identity & authorisation infrastructure for AI agents. Install once — Xybern discovers every AI agent in your system, gives each a cryptographic identity, and (when you turn enforcement on) authorises every action before it executes.

pip install xybern
xybern login          # browser device-code flow (auto-links your workspace)

from xybern import auto
auto.connect()        # discovers frameworks + agents + tools, registers them, instruments them

✓ Detected frameworks: CrewAI, LangGraph, 2 MCP servers
✓ Found 12 agents · 48 tools
✓ Registered to workspace "Acme Corp" (each issued a cryptographic identity)
✓ Mode: OBSERVE — actions logged, nothing blocked yet

Where to add it

Add these two lines once, at your app's startup — before your agents run. That's the whole integration.

from xybern import auto
auto.connect()
# ... then your normal code: build agents, run the crew/graph, serve, etc.

Your setup	Where to put it
Agent script (CrewAI / LangChain / OpenAI Agents / LlamaIndex)	Top of your main file, before creating agents
FastAPI	Right after app = FastAPI()
Celery	In the Celery app module (runs in each worker)
MCP server	Top of the server entry, before serving tools
Django	An AppConfig.ready() or wsgi.py
Jupyter	First cell

Multi-process (gunicorn / multiple Celery workers): run it in the module each worker imports, so every process is covered.

What it does

• Auto-discovery — detects and instruments LangChain, CrewAI, OpenAI Agents SDK, MCP servers, LangGraph, AutoGen, Semantic Kernel, LlamaIndex (and FastAPI/Celery). No manual wiring; agents appear in your Xybern dashboard as your app creates them.
• Cryptographic identity — every discovered agent is registered and issued an identity, so its actions are attributable and signable.
• Authorisation before execution — each tool/agent action passes through Xybern's policy engine; allow / block / escalate.
• Observe-first & fail-open — default mode only logs (never blocks). When you switch to enforce, the SDK fails open if Xybern is unreachable, so it can't take your agents down.
• Privacy — sends content hashes by default, not raw payloads.

Modes

auto.connect()                 # OBSERVE (default): log + inventory, never blocks
auto.connect(mode="enforce")   # authorise actions (allow/block/escalate)

or persist it: xybern enforce on / xybern enforce off.

CLI

xybern login [--api-key xb_...]   # device-code flow, or paste a key / set XYBERN_API_KEY
xybern agents                     # dry-run: what would be discovered
xybern status
xybern enforce on|off
xybern logout

Auth options

1. Device code — xybern login opens a browser; approve + pick a workspace; a scoped key is minted and stored in ~/.xybern/credentials.json.
2. API key — xybern login --api-key xb_..., or export XYBERN_API_KEY=xb_..., or auto.connect(api_key="xb_...").

Configuration

Option	Default	Meaning
mode	observe	observe (log only) or enforce (act on decisions)
fail_open	True	allow actions through if Xybern is unreachable (enforce mode)
redact	True	send content hashes instead of raw content
frameworks	all	restrict to specific frameworks

Docs: https://docs.xybern.com/authorization/sdk