> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Solution guides

> Solution guides that sequence the OP Stack documentation into one paved path per real operator or developer goal.

Each page in this section is a **solution guide**: one goal that in practice
spans several components, sequenced as a single in-site path. A solution
guide links each stop to its canonical page and states what to take from it,
adds the decision logic that no single component page can own, and leaves
the site only through curated, working exits. If your goal is listed here,
start here instead of assembling the path yourself.

<CardGroup cols={2}>
  <Card title="Tune batcher costs" href="/use-cases/tune-batcher-costs">
    Cut what your chain spends posting data to L1, and recover what you do
    spend through your fee parameters.
  </Card>

  <Card title="Run a fault-proof challenger" href="/use-cases/run-a-fault-proof-challenger">
    Stand up an op-challenger that defends your chain, from bond budgeting
    through configuration and monitoring.
  </Card>

  <Card title="Implement a custom deposit flow" href="/use-cases/implement-a-custom-deposit-flow">
    Build an L1 to L2 deposit path, choosing the right contract entry point
    and handling gas, aliasing, and failures.
  </Card>

  <Card title="Looking for something else?" href="/">
    Browse the documentation by role — app developers, chain operators, node
    operators, and protocol readers.
  </Card>
</CardGroup>