# Bundles (Backruns)

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Bundle Format</strong></td><td>A FastLane bundle consists of two transactions..</td><td><a href="bundles-backruns/bundle-format">bundle-format</a></td></tr><tr><td><strong>submitFlashBid</strong></td><td>FastLane Searcher transactions are calls to the FastLane Auction Handler's <code>submitFlashBid</code> function..</td><td><a href="bundles-backruns/bid-submission">bid-submission</a></td></tr><tr><td><strong>BundleRequirements</strong></td><td>The <code>type</code> (legacy, type 2) of the searcher's transaction must be the same as the opportunity-creating transaction..</td><td><a href="bundles-backruns/bundle-requirements">bundle-requirements</a></td></tr><tr><td><strong>Full Example</strong></td><td>in Javascript and Python</td><td><a href="bundles-backruns/full-example">full-example</a></td></tr><tr><td>Atlas <strong>ISolverContract Interface</strong></td><td>Test</td><td><a href="bundles-backruns">bundles-backruns</a></td></tr></tbody></table>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://fastlane-labs.gitbook.io/polygon-fastlane/searcher-guides/bundles-backruns.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.