> For the complete documentation index, see [llms.txt](https://docs.autonos.vip/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.autonos.vip/4.-core-mechanisms-and-security-the-architecture-of-trust/4.2-the-simulate-before-broadcast-cycle.md).

# 4.2 The "Simulate-Before-Broadcast" Cycle

A critical innovation within AutonOS is the **Broadcast-before-Verification (BbV)** mechanism. In a manual environment, a user might accidentally sign a transaction that results in a failed state or significant loss due to high slippage. In the AutonOS environment, every transaction generated by an agent is treated as a "Candidate Transaction" until it passes a rigorous internal simulation.

When a Kernel Agent determines that a market condition has been met (e.g., a yield threshold on a lending protocol), the request is passed to the AutonOS Kernel. The Kernel then performs a local state-simulation, replaying the transaction against the most recent block head. The Kernel evaluates the outcome: Does this transaction result in the expected asset balance? Does it violate any of the risk policies defined in the Smart Container?

Only after the Kernel verifies that the simulated outcome matches the user’s intent does the transaction receive the final cryptographic signature for broadcast to the mempool. This creates a "Failure-Proof" execution loop where the agent's logic is checked by an independent security layer at every step.


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