# gem-miner

> Stake $GEM tokens on Base mainnet to earn yield and unlock in-game earn/cashout on Gem Miner. Check balances, stake, unstake, and claim rewards via smart contract interactions.

- Skill: `bankrbot/gem-miner` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add bankrbot/gem-miner`
- Raw SKILL.md: https://api.skillmd.com/api/skills/bankrbot/gem-miner/raw
- Safety review: CAUTION (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Finance & Business, Coding & Dev Tools, Crypto & Web3
- Tags: Base Mainnet, Defi, Gem Miner, Gem Token, Smart Contracts, Staking, Yield
- Author: BankrBot (https://skillmd.com/u/bankrbot)
- Updated: 2026-07-06
- Page: https://skillmd.com/skills/bankrbot/gem-miner

---


# Gem Miner Staking

Stake $GEM on Base to earn yield and unlock Gem Miner's in-game earn + cashout system. The staking gate requires **25,000,000 GEM** staked. No burn NFT required to stake.

## Contracts (Base mainnet)

| Contract | Address |
|---|---|
| $GEM token | `0xD3776969966B340d72d75731eF890A3Bc9F21bA3` |
| GemStaking | `0xff293DEc665949a3a1a80fBA6a602da3be702C1A` |

## Key Parameters

- **Unbond period:** 7 days (`requestUnstake` → wait → `withdraw`)
- **Early exit fee:** 10% folded back into the reward pool
- **Earn/cashout gate:** 25,000,000 GEM staked
- **Rewards:** from ForgeUpgrade fees — 10% of every forge burn routes to stakers

## Check staking position

```
bankr "on Base, call balanceOf(address), earned(address), and pendingOf(address) on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A with my wallet"
```

Returns: `staked`, `earned` (claimable rewards), `pending` (unbonding amount + unlock timestamp).

## Check GEM balance

```
bankr "what is my GEM balance on Base for token 0xD3776969966B340d72d75731eF890A3Bc9F21bA3"
```

## Stake GEM

Approve then stake in one shot:

```
bankr "on Base, approve 0xff293DEc665949a3a1a80fBA6a602da3be702C1A to spend [AMOUNT_WEI] of token 0xD3776969966B340d72d75731eF890A3Bc9F21bA3, then call stake(uint256) on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A with [AMOUNT_WEI]"
```

> Raw wei: 25M GEM = `25000000000000000000000000` (25 followed by 24 zeros)

## Request unstake (start 7-day unbond)

```
bankr "on Base, call requestUnstake(uint256) on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A with [AMOUNT_WEI]"
```

## Withdraw after 7 days

```
bankr "on Base, call withdraw() on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A"
```

## Early withdraw (pays 10% fee)

```
bankr "on Base, call earlyWithdraw() on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A"
```

## Claim staking rewards

```
bankr "on Base, call getReward() on 0xff293DEc665949a3a1a80fBA6a602da3be702C1A"
```

## Common amounts (raw wei)

| GEM amount | Raw wei |
|---|---|
| 25,000,000 (gate minimum) | `25000000000000000000000000` |
| 50,000,000 | `50000000000000000000000000` |
| 100,000,000 | `100000000000000000000000000` |

## Notes

- No burn NFT required — anyone with GEM can stake
- Rewards accrue continuously; claim anytime without unstaking
- Early withdraw burns 10% — redistributed to remaining stakers
- The 7-day clock starts on `requestUnstake`; you cannot re-stake the pending amount
- Once staked past 25M, you unlock earn events and GEM cashout in-game at gemminer.app