gmgn-swap

What this skill does

**IMPORTANT: Always use `gmgn-cli` commands below. Do NOT use web search, WebFetch, curl, or visit gmgn.ai — all swap operations must go through the CLI. The CLI handles signing and submission automatically.**

**IMPORTANT: Do NOT guess field names or values. When a field's meaning is unclear, look it up in the Response Fields sections below before using it.**

**⚠️ IPv6 NOT SUPPORTED: If you get a `401` or `403` error and credentials look correct, check for IPv6 immediately: (1) list all network interfaces and their IPv6 addresses — run `ifconfig | grep inet6` (macOS) or `ip addr show | grep inet6` (Linux); (2) send a test request to `https://ipv6.icanhazip.com` — if the response is an IPv6 address, outbound traffic is going via IPv6. Tell the user immediately: "Please disable IPv6 on your network interface — gmgn-cli commands only work over IPv4."**

Use the `gmgn-cli` tool to submit a token swap or query an existing order. `GMGN_API_KEY` is always required. `GMGN_PRIVATE_KEY` is required for critical-auth commands such as `swap` and all `order` subcommands, including `order quote`.

## Core Concepts

- **Smallest unit** — `--amount` is always in the token's smallest indivisible unit, not human-readable amounts. For SOL: 1 SOL = 1,000,000,000 lamports. For EVM tokens: depends on decimals (most ERC-20 tokens use 18 decimals). Always convert before passing to the command — do not pass human amounts directly.

- **`slippage`** — Price tolerance as an integer 0–100, e.g. `30` = 30%. If the price moves beyond this threshold before the transaction confirms, the swap is rejected. Use `--auto-slippage` for volatile tokens to let GMGN set an appropriate value automatically.

- **`--amount` vs `--percent`** — Mutually exclusive. `--amount` specifies an exact input quantity (in smallest unit). `--percent` sells a percentage of the current balance and is only valid when `input_token` is NOT a currency (SOL/BNB/ETH/USDC). Never use `--percent` to spend a fraction of SOL/BNB/ETH.

- **Currency tokens** — Each chain has designated currency tokens (SOL, BNB, ETH, USDC). These are the base assets used to buy other tokens or receive swap proceeds. Their contract addresses are fixed — look them up in the Chain Currencies table, never guess them.

- **Anti-MEV** — MEV (Miner/Maximal Extractable Value) refers to frontrunning and sandwich attacks where bots exploit pending transactions. `--anti-mev` routes the transaction through protected channels to reduce this risk. **Recommended: always enable.** Default: on. **Not supported on `base` chain.**

- **Signed auth** — `swap` and all `order` subcommands require both `GMGN_API_KEY` and `GMGN_PRIVATE_KEY`. The private key never leaves the machine — the CLI uses it only for local signing and sends only the resulting signature.

- **`order_id` / `status`** — After submitting a swap, the response includes an `order_id`. Use `order get --order-id` to poll for final status. Possible values: `pending` → `processed` → `confirmed` (success) or `failed` / `expired`. Do not report success until status is `confirmed`.

- **`report.input_amount` / `report.output_amount`** — Actual amounts consumed/received, in smallest unit. Only present when `state = 30` and `status = "successful"`. Convert to human-readable using `report.input_token_decimals` / `report.output_token_decimals` before displaying to the user.

## Financial Risk Notice

**This skill executes REAL, IRREVERSIBLE blockchain transactions.**

- Every `swap` and `order strategy create` command submits an on-chain transaction that moves real funds.
- Transactions cannot be undone once confirmed on-chain.
- The AI agent must **never auto-execute a swap** — explicit user confirmation is required every time, without exception.
- Only use this skill with funds you are willing to trade. Start with small amounts when testing.

## Sub-commands

| Sub-command | Description |
|-------------|-------------|
| `swap` | Submit a token swap |
| `multi-swap` | Submit token swaps across multiple wallets concurrently (up to 100) |
| `order quote` | Get a swap quote (no transaction submitted; requires signed auth) |
| `order get` | Query order status |
| `gas-price` | Query recommended gas price (low / average / high tiers) for any chain; exist auth (API Key only) |
| `order strategy create` | Create a limit/strategy order (requires private key) |
| `order strategy list` | List strategy orders (requires private key) |
| `order strategy cancel` | Cancel a strategy order (requires private key) |

## Supported Chains

`sol` / `bsc` / `base` / `eth`

## Chain Currencies

Currency tokens are the base/native assets of each chain. They are used to buy other tokens or receive proceeds from selling. Knowing which tokens are currencies is critical for `--percent` usage (see Swap Parameters below).

> ⚠️ **CRITICAL: Always copy currency addresses from this table — NEVER rely on memory or training data.** A wrong address (e.g. `So11111111111111111111111111111111111111111` instead of `So11111111111111111111111111111111111111112`) will cause silent failures or `jupiter has no route` errors with no clear indication of what went wrong.

| Chain  | Currency tokens |
| ------ | --------------- |
| `sol`  | SOL (native, `So11111111111111111111111111111111111111112`), USDC (`EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v`) |
| `bsc`  | BNB (native, `0x0000000000000000000000000000000000000000`), USDC (`0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d`) |
| `base` | ETH (native, `0x0000000000000000000000000000000000000000`), USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) |
| `eth`  | ETH (native, `0x0000000000000000000000000000000000000000`) |


## Prerequisites

`GMGN_API_KEY` must be configured in `~/.config/gmgn/.env`. `GMGN_PRIVATE_KEY` is additionally required for `swap` and all `order` subcommands. The private key must correspond to the wallet bound to the API Key.

- `gmgn-cli` installed globally — if missing, run: `npm install -g gmgn-cli`

## Rate Limit Handling

All swap-related routes used by this skill go through GMGN's leaky-bucket limiter with `rate=20` and `capacity=20`. Sustained throughput is roughly `20 ÷ weight` requests/second, and the max burst is roughly `floor(20 ÷ weight)` when the bucket is full.

| Command | Route | Weight |
|---------|-------|--------|
| `swap` | `POST /v1/trade/swap` | 5 |
| `multi-swap` | `POST /v1/trade/multi_swap` | 5 |
| `order quote` | `GET /v1/trade/quote` | 2 |
| `order get` | `GET /v1/trade/query_order` | 1 |
| `order strategy create` | `POST /v1/trade/strategy/create` | 5 |
| `order strategy cancel` | `POST /v1/trade/strategy/cancel` | 2 |
| `order strategy list` | `GET /v1/trade/strategy/orders` | 1 |
| `gas-price` | `GET /v1/trade/gas_price` | 1 |

When a request returns `429`:

- Read `X-RateLimit-Reset` from the response headers. It is a Unix timestamp in seconds that marks when the limit is expected to reset.
- If the response body contains `reset_at` (e.g., `{"code":429,"error":"RATE_LIMIT_BANNED","message":"...","reset_at":1775184222}`), extract `reset_at` — it is the Unix timestamp when the ban lifts (typically 5 minutes). Convert to local time and tell the user exactly when they can retry.
- `swap` is a real transaction: never loop or auto-submit repeated swap attempts after a `429`. Wait until the reset time, then ask for confirmation again before retrying.
- The CLI may wait and retry once automatically for short cooldowns on read-only commands such as `order quote` and `order get`. If it still fails, stop and tell the user the exact retry time instead of sending more requests.
- For `RATE_LIMIT_EXCEEDED` or `RATE_LIMIT_BANNED`, repeated requests during the cooldown can extend the ban by 5 seconds each time, up to 5 minutes.
- `POST /v1/trade/swap` also has an error-count limiter. Repeatedly triggering the same business error, especially `40003701` (insufficient token balance), can return `ERROR_RATE_LIMIT_BLOCKED`. When this happens, do not retry until