Solana Easy Swap

Swap any Solana token from chat. Say "swap 1 SOL for USDC" and it handles everything — quoting, signing, sending, confirming. No API keys, no wallet extensions, no setup beyond a keypair. Powered by Jupiter.

Setup

First run: Install dependencies (automatic if install spec is supported, otherwise manual):

cd {baseDir} && npm install --production

Required env var:

• SOLANA_KEYPAIR_PATH — path to a Solana keypair JSON file (standard solana-keygen format). This skill reads your keypair to sign transactions. Only use with a keypair you trust this skill to access.

Optional env vars:

• SOLANA_RPC_URL — custom RPC endpoint (default: https://api.mainnet-beta.solana.com)
• OSS_DEFAULT_SLIPPAGE_BPS — default slippage in basis points (default: 100 = 1%)
• OSS_PRIORITY_FEE_FLOOR — minimum priority fee in lamports (default: 50000)

No API keys required. Jupiter is used unauthenticated.

Common Token Mints

| Token | Mint |

|---|---|

| SOL (wrapped) | So11111111111111111111111111111111111111112 |

| USDC | EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v |

| USDT | Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB |

For other tokens, ask the user for the mint address.

Flow

1. Prepare

node {baseDir}/scripts/swap.mjs prepare \
  --from So11111111111111111111111111111111111111112 \
  --to EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v \
  --amount 1000000000 \
  --slippage 100

Returns JSON:

{
  "prepareId": "abc123",
  "expectedOut": "150230000",
  "minOut": "148727700",
  "priceImpact": "0.01",
  "expiresAt": "2025-02-13T20:00:00Z",
  "summary": {
    "from": "1 SOL",
    "to": "~150.23 USDC",
    "minReceived": "148.73 USDC",
    "slippage": "1%",
    "priceImpact": "0.01%",
    "destination": "owner"
  }
}

Always show the summary to the user and wait for confirmation before executing.

If priceImpact > 1%, warn the user explicitly.

2. Execute

After user confirms:

node {baseDir}/scripts/swap.mjs execute --prepareId abc123

Returns JSON:

{
  "signature": "5UzV...",
  "submittedAt": "2025-02-13T19:58:12Z"
}

3. Status (poll until confirmed)

node {baseDir}/scripts/swap.mjs status --signature 5UzV...

Returns JSON:

{
  "state": "confirmed",
  "slot": 123456789,
  "confirmationStatus": "finalized"
}

States: submitted → confirmed | failed | expired | unknown

4. Receipt

node {baseDir}/scripts/swap.mjs receipt --signature 5UzV...

Returns JSON with actual amounts swapped, fees, and a Solscan link.

Error Handling

All commands return JSON with error field on failure:

{
  "error": {
    "code": "INSUFFICIENT_SOL",
    "message": "Not enough SOL for fees. Have 0.001, need ~0.006",
    "retryable": false
  }
}

Error codes and retry guidance:

| Code | Retry? | Action |

|---|---|---|

| INVALID_INPUT | No | Fix the input |

| INSUFFICIENT_SOL | No | Tell user they need more SOL |

| KEYPAIR_NOT_FOUND | No | Check SOLANA_KEYPAIR_PATH is set |

| KEYPAIR_INVALID | No | Check keypair file format |

| PREPARE_EXPIRED | Yes | Run prepare again, re-confirm with user |

| PREPARE_ALREADY_EXECUTED | No | This swap was already sent |

| BACKEND_UNAVAILABLE | Yes | Wait 3s, retry prepare up to 2x |

| BACKEND_QUOTE_FAILED | No | No route — tell user (bad pair or no liquidity) |

| TX_EXPIRED | Yes | Run prepare again, re-confirm with user |

| TX_BROADCAST_FAILED | Yes | Retry execute once (if not expired) |

| TX_FAILED_ONCHAIN | No | Swap failed (e.g., slippage). Do NOT retry. |

| RPC_UNAVAILABLE | Yes | Wait 3s, retry up to 2x |

Agent Guidelines

1. Always confirm before executing. Show the user the summary from prepare and wait for explicit "yes" / "go" / "confirm".
2. Never auto-retry failed onchain transactions. If TX_FAILED_ONCHAIN, the tx landed and failed — retrying sends a new tx.
3. Re-confirm on re-prepare. If you need to prepare again (expired quote), show the new summary — prices may have changed.
4. Handle amounts in base units. SOL = 9 decimals (1 SOL = 1000000000), USDC = 6 decimals (1 USDC = 1000000).
5. Ask for mint addresses if the user mentions a token you don't recognize. Don't guess.
6. Report the Solscan link after confirmation: https://solscan.io/tx/{signature}

Security

• This skill signs transactions using the configured keypair. It does NOT create, import, or manage keys.
• Keypair material is never logged, echoed, or included in any output.
• Third-party destinations require explicit --allowThirdParty flag.
• All swaps enforce slippage protection via minOut.
• Prepared swaps expire after 120 seconds by default.

Limitations (v1)

• Jupiter unauthenticated API — Token2022 and pump.fun tokens may not work.
• No best-price routing — takes whatever Jupiter returns.
• Receipt amounts are best-effort (derived from pre/post balance diffs).
• Solana mainnet only.