mnki (Python)

pip install mnki            # verify, delegate, attest — no dependencies
pip install "mnki[signing]" # Agent-Proof signing with a local key

from mnki import AgentTrustClient, AgentIdentity

c = AgentTrustClient("https://mnki.com", api_key="at_verify_…")
d = c.verify({"agent": "invoice-agent", "action": "refund.create", "amount": 420, "currency": "EUR"})
print(d["decision"], [e["title"] for e in d["evidence"]])

Local mode (no account) runs the same pipeline as the control plane, in-process, validated against the conformance vectors:

from mnki import Guard, Denied, demo_world
g = Guard(world=demo_world(), agent="invoice-agent", action_prefix="", mode="observe")   # observe → warn → require_approval → enforce

@g.wrap("refund.create")
def refund(customer_id: str, amount: float, currency: str = "EUR"): ...

Framework adapters (the framework is imported lazily, never required): mnki.adapters.openai_agents, .langchain, .crewai, .pydantic_ai — each exposes guard_tools(guard, tools); refusals come back to the model as {"error": "denied", "reasons": [...], "evidence": [...]} or raise with on_refused="throw". Extras: pip install "mnki[openai-agents]", [langchain], [crewai], [pydantic-ai], [httpx].

agent_trust remains importable as a deprecated alias for one minor version. Apache-2.0.