version: "1.0.0" name: eterna-solana-usdc description: > Use when the user wants to deposit official Solana USDC into Eterna from a wallet they sign, or withdraw Eterna USDC back to a Solana address. Triggers: "deposit USDC on Solana to Eterna", "fund Eterna from Phantom", "withdraw Eterna USDC to Solana". Do not use for generic Solana swaps or on-chain DEX perps. For orders after the deposit credits, use the eterna-mcp skill. license: MIT metadata: author: EternaHybridExchange version: "1.1.0"

Eterna Solana USDC

Move official Solana USDC between a user-signed wallet and Eterna. Trading after the credit is the eterna-mcp skill, not this one.

Custody

The user signs the Solana transfer. After Eterna credits it, the balance is on a managed trading account. It is not in the Solana wallet anymore. Say that before the user signs. Withdrawal is a later step, with its own confirmation.

When to use

• The wallet holds official Solana USDC, or the user will send it.
• The user wants that USDC on Eterna.
• The user wants USDC withdrawn to a Solana address.

When not to use

• The user wants a Solana swap and did not name Eterna. Use a Jupiter skill. If they hold SOL, swap to the official USDC mint there first.
• The user wants an on-chain perp (Drift and similar). This skill does not open those positions.
• The user wants to place an Eterna order. Switch to eterna-mcp once deposit status is success.

Never

• Ask for a seed phrase, private key, or keypair file.
• Put ETERNA_MCP_TOKEN or any bearer token in the chat or in a file you commit.
• Send any mint other than the official USDC mint in references/live-limits.md.
• Send on a chain other than Solana. Coin is USDC. Chain code is SOL.
• Add a memo when tagDeposit is empty. If tagDeposit is non-empty, stop and do not send.
• Pick an older deposit row because it is also on SOL. Match the signature.
• Withdraw to an address that starts with 0x.
• Promise the same USDC amount back. There is a live minimum and a fee.

Confirm before signing or withdrawing

Wait for an explicit yes:

1. SPL transfer: mint, destination, amount in USDC and in base units, chain Solana, and that the credited balance will sit on a managed Eterna account.
2. Withdrawal: coin USDC, chain SOL, destination, amount, live minimum, live fee. Do not submit if the amount is below the live minimum.

Steps

MCP connection and orders: skill eterna-mcp in this repo.

Demo size

At least 5 USDC if the user wants USDC back on Solana. Re-read references/live-limits.md before quoting a figure.