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

# Function: compilePolicies()

# Function: compilePolicies()

> **compilePolicies**(`policies`, `expiresAt`): `ScVal`

Defined in: [packages/accounts/src/policy/compile.ts:49](https://github.com/bucks-pay/buckspay-sdk/blob/43ad599d2776cb5d657043c36847b3318093ccf4/packages/accounts/src/policy/compile.ts#L49)

Compile the session policies into the on-chain `Policy` struct the contract account expects - ONE
struct combining the allowlist, spend cap, and expiry. A session MUST carry BOTH a `spendLimit` and a
non-empty `allowlist`: an unbounded delegation (no cap, or no target restriction) is refused, matching
the contract's own `EmptyPolicy` rejection. `expiresAt` is the session's on-chain expiry as a ledger
timestamp in seconds (compared against the ledger clock in `__check_auth`).

The struct's map keys are emitted in canonical sorted order
(`allowlist`, `expiration`, `spend_max`, `spend_period`, `spend_token`); enforcement is on-chain, so
the SDK's only job is to encode these rules exactly - pinned byte-for-byte by a golden test.

## Parameters

### policies

[`SessionPolicy`](/sdk-reference/accounts/src/policy/type-aliases/SessionPolicy)\[]

### expiresAt

`number` | `bigint`

## Returns

`ScVal`