CoilMakerStrategy

ELI5: Keep's favorite strategy — posts buy/sell orders on Coil as a market maker, earning spread and fee discounts regular traders don't get.

What you can do

Actor	Action
Vault	deposit / withdraw USDC to strategy
Strategy	Rest EIP-1271 signed intents on Coil
Solver	Fill batches including strategy intents

Priority 0 in vault queue — funded before fallbacks.

Flywheel fit

Closes the loop: Keep capital → Coil liquidity → fees → Keep.

flowchart LR
    Keep[Keep vault] --> CMS[CoilMakerStrategy]
    CMS -->|EIP-1271 intents| Coil[Coil DEX]
    Coil -->|fees keep_bps| Keep

Receives:

• Direct keep_bps from CoilFeeRouter
• Deployed USDC from vault rebalance
• TARE emission slice (via vault funding path)

Contract walkthrough

CoilMakerStrategy.vy:

• Implements IStrategy — vault-only deposits
• Signs intents authorized on-chain via EIP-1271
• Fill bound: not below pool EMA oracle floor
• Earns trading spread + protocol fee discount on Keep's own Coil activity

Bare USDC transfers to vault do not credit total_idle — CoilFeeRouter must use strategy deposit path (FLYWHEEL 2.0 fix).

Sepolia

Contract	Address
CoilMakerStrategy	0xEf5202aD48e204ADe372E0Ae578EA7A2CA8D3BaF

What can go wrong

Risks

• Low Coil flow → strategy idle; fallbacks activate.
• Solver trust — whitelisted solver submits batches.
• Market-making loss if fills adverse vs oracle floor.

See Coil solver.

Source: khomdev-keep/src/strategies/CoilMakerStrategy.vy