# Backend wallet policies

Policies let you control which signing operations your backend wallets can perform.
Define rules based on value limits, address allowlists, network restrictions, calldata constraints, and more — the policy engine evaluates every signing request before it executes.

For full documentation on policy structure, evaluation logic, criteria types, and examples, see the [policies reference](/docs/configuration/policies).

<HoverCardLayout>
  <HoverCardLink title="Policies overview" description="How policies work, scopes, evaluation algorithm, managing policies, and getting started." href="/configuration/policies" icon={BookOpen} />

  <HoverCardLink title="Rules reference" description="Policy structure, allowlist vs denylist patterns, pre-flight evaluation, and limits." href="/configuration/policies/rules-reference" icon={BookOpen} />

  <HoverCardLink title="Ethereum rules" description="Operations and criteria for Ethereum transaction signing, message signing, and typed data." href="/configuration/policies/ethereum-rules" icon={Cpu} />

  <HoverCardLink title="Solana rules" description="Operations and criteria for Solana transaction signing and message signing." href="/configuration/policies/solana-rules" icon={Sun} />
</HoverCardLayout>