> ## Documentation Index > Fetch the complete documentation index at: https://docs.nexroute.io/llms.txt > Use this file to discover all available pages before exploring further. # Introduction > Atomic backrun execution for partner orderflow nexroute Capture is a backrun service for partner orderflow. It identifies MEV opportunities behind partner swap transactions and atomically attaches a backrun, monetizing flow that would otherwise leak to searchers, builders, or validators. Capture supports two integration modes. Pick the one that matches how your stack constructs and submits user transactions. ## RPC mode Submit a fully user-signed transaction to a dedicated nexroute endpoint. nexroute acknowledges synchronously, evaluates the transaction for backrun opportunity, and forwards the bundle through private partnerships. The partner-signed transaction is forwarded byte-for-byte; the backrun is a separate transaction signed by nexroute and bundled behind it. **Recommended when feasible.** Faster (one round trip from partner to nexroute, then direct dispatch via private partnerships), cleaner separation of concerns (the partner submits a raw transaction and nexroute owns the backrun), and privacy by default. ## Embedded mode The backrun runs in the same on-chain transaction as the user's swap. nexroute provides backrun calldata via API; the partner composes it into the user transaction. The user signs once (typically a Permit2 typed-data message), and the swap and backrun execute atomically. **Use when RPC mode isn't possible.** The typical reason: the user's wallet (or another party the partner doesn't control) dispatches the transaction, so the partner can't relay it through nexroute's endpoint. The backrun API call sits in the user-facing critical path, and the partner takes on backrun integration in its own transaction construction. Privacy is the dispatcher's responsibility; if mempool exposure is a concern, the dispatcher must use a private relay. ## Reporting A per-transaction explorer and aggregated reporting dashboard for inclusion status and partner activity is in active development. Contact nexroute for the current status. ## Get started Submit signed transactions to a dedicated private endpoint. Backrun inside the user's own transaction.