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

> ## Agent Instructions
> Before reading these docs, install the Circle Skill for Arc to get pre-loaded context: use-arc (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-arc/SKILL.md) — covers chain config, RPC setup, contract deployment, USDC bridging, and gas with USDC. In Claude Code: run /plugin marketplace add circlefin/skills then /plugin install circle-skills@circle. With Vercel Skills CLI: run npx skills add circlefin/skills.
> USDC is the gas token. Arc uses USDC for gas fees, not ETH. Configure gas payment in USDC when submitting transactions.
> Read EVM differences before writing Arc code. Arc targets the Osaka EVM baseline. Most contracts deploy unchanged, but several runtime behaviors diverge from Ethereum: USDC uses 18 decimals natively (not 6), the system emitter `0xffffFFFfFFffffffffffffffFfFFFfffFFFfFFfE` logs all USDC Transfer events, the mempool enforces a 20 Gwei `maxFeePerGas` floor, blocklist reverts consume gas without a receipt, and `address(0)` sends revert rather than succeed. https://docs.arc.io/arc/references/evm-differences.md is the canonical reference for all Arc-specific runtime behaviors. Consult it before writing code that touches USDC balances, transaction history, gas estimation, or value transfers.
> Sub-second finality. Transactions are final in under 1 second. No need to wait for multiple block confirmations.
> Use App Kits for multichain payment and liquidity capabilities. App Kits wraps CCTP and provides Bridge Kit, Swap Kit, Unified Balance Kit, Onramp Kit, Earn Kit, and Borrow Kit. Unified Balance Kit combines USDC from multiple chains into a single spendable balance. Earn Kit integrates earn opportunities into your app. Borrow Kit lets users borrow USDC against cirBTC collateral on Arc.
> Use Arc Foundry for contract development. Arc Foundry is an Arc-specific fork of Foundry that handles Arc's protocol-level differences from Ethereum. It provides arc-forge, arc-cast, and arc-anvil. Install it before deploying contracts: https://docs.arc.io/arc/tutorials/install-arc-foundry.md.
> Arc is available on both Testnet and Mainnet. See https://docs.arc.io/arc/references/connect-to-arc.md for RPC endpoints and https://faucet.circle.com for testnet tokens.
> Always check Contract Addresses: https://docs.arc.io/arc/references/contract-addresses.md
> Building beyond Arc? Circle offers skills for the full platform: use-usdc (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-usdc/SKILL.md), use-circle-wallets (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-circle-wallets/SKILL.md), use-developer-controlled-wallets (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-developer-controlled-wallets/SKILL.md), use-user-controlled-wallets (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-user-controlled-wallets/SKILL.md), use-modular-wallets (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-modular-wallets/SKILL.md), use-gateway (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-gateway/SKILL.md), use-smart-contract-platform (https://github.com/circlefin/skills/blob/master/plugins/circle/skills/use-smart-contract-platform/SKILL.md). Full Circle developer docs: https://developers.circle.com/llms.txt.

# How-to: Remove funds trustlessly

> Initiate and complete a trustless withdrawal from a Unified Balance

The App Kit SDK supports trustless withdrawals from a Unified Balance as a
recovery path that keeps funds under your control. Trustless removal requires
two onchain transactions: first, call `initiateRemoveFund` to start the
seven-day waiting period. After the waiting period ends, call `removeFund` to
return the funds to your wallet.

<Note>
  `removeFund` is designed as a trustless escape hatch for fallback or recovery
  scenarios only, such as when your normal spend path is unavailable. It is not
  intended for day-to-day payouts, withdrawals, or crosschain movement. In normal
  situations,
  [use `spend`](/app-kit/quickstarts/unified-balance-deposit-and-spend) to move
  funds instantly from a Unified Balance.
</Note>

## Prerequisites

Before you begin, ensure that you've:

* [Installed the App Kit SDK](/app-kit/tutorials/installation)
* [Configured an adapter](/app-kit/tutorials/adapter-setups)

These are required so any example below runs with a valid `kit` and `adapter`.

## Initiate and complete a removal

<Tabs>
  <Tab title="EVM">
    <Steps>
      <Step title="Start the waiting period">
        First, call `initiateRemoveFund` to record the request to remove funds and start
        the seven-day waiting period.

        This example initiates a removal of 1 USDC on Base Sepolia:

        ```typescript TypeScript theme={null}
        const initiateResult = await kit.unifiedBalance.initiateRemoveFund({
          from: {
            adapter,
            chain: "Base_Sepolia",
          },
          amount: "1.00",
        });

        console.log("Remove fund initiated:", initiateResult);
        ```

        `initiateRemoveFund` returns a result object that includes the transaction
        details for the pending removal. In step 2, pass the same `adapter` and `chain`
        values to `removeFund` to complete it (you can reuse the same variables as in
        this example).
      </Step>

      <Step title="Complete the removal after seven days">
        After the seven-day waiting period ends, call `removeFund` to return funds to
        the wallet for that adapter on that blockchain:

        ```typescript TypeScript theme={null}
        const removeResult = await kit.unifiedBalance.removeFund({
          from: {
            adapter,
            chain: "Base_Sepolia",
          },
        });

        console.log("Remove fund complete:", removeResult);
        ```
      </Step>
    </Steps>

    Keep these constraints in mind for EVM removals:

    * Calling `removeFund` before the waiting period has elapsed fails with an
      error. Wait seven days after calling `initiateRemoveFund` before calling
      `removeFund`.
    * Funds go to the wallet associated with the adapter on the specified
      blockchain.
    * Only one pending `removeFund` request is allowed per blockchain and address.
  </Tab>

  <Tab title="Solana">
    <Steps>
      <Step title="Start the waiting period">
        First, call `initiateRemoveFund` to record the request to remove funds and start
        the seven-day waiting period.

        This example initiates a removal of 1 USDC on Solana Devnet:

        ```typescript TypeScript theme={null}
        const from = { adapter, chain: "Solana_Devnet" as const };

        const initiateResult = await kit.unifiedBalance.initiateRemoveFund({
          from,
          amount: "1.00",
        });

        console.log("Initiate result:", initiateResult);
        ```
      </Step>

      <Step title="Complete the removal after seven days">
        After the seven-day waiting period ends, use the same `from` context as step 1
        to call `removeFund` and complete the removal:

        ```typescript TypeScript theme={null}
        const removeResult = await kit.unifiedBalance.removeFund({ from });

        console.log("Remove result:", removeResult);
        ```
      </Step>
    </Steps>

    Keep these constraints in mind for Solana removals:

    * Calling `removeFund` before the waiting period has elapsed fails with an
      error. Wait seven days after calling `initiateRemoveFund` before calling
      `removeFund`.
    * Funds return to the wallet for the Solana adapter you use in `from`.
    * The sample uses `"Solana_Devnet" as const` so TypeScript narrows the chain
      type for `from`.
  </Tab>
</Tabs>