sica-fondt/core/docs/plans/M3c-amm-liquidity-sims.md
Claude 3919e70ed0
Address PR #13 review: 18 comments across M0-M3g specs
M0: economy organ stores local memory ledger; M6 supervises M5
directly, M7 is independent antivirus/guarddog alerting M6 via
Ichor; Ada dependency reframed to economy scope; build sequence
changed to subcomponent-first with ablative tests.

M1: submit_action returns {succeeded|failed}, diagnostics internal
to Conductor; stubs now print "if finished, would respond with..."
for debugging; law script changes require operator + Homunculus
signatures; law script format added as open item.

M2: removed Python/Rust from language options; confidence scale
changed to [0.0, 10.0] per position.

M3 hub: normalized all time horizons to ~40s wall time windows;
confidence scale 0.00-10.00 with "X.XX/10.00" print format; gain
rates as "low - mid - high / 10.00"; removed Python from language
list across all sub-specs (M3a-M3g).

M3a: Julia/R/Fortran/Octave replaces Python; fBM citation added
(Hosking 1984, Wood & Chan 1994); confidence/correctness/certainty
distinguished as 3 separate metrics; models span multiple horizons.

M3b: models span multiple horizons note added; Mesa/Python removed.
M3c: Solidity for on-chain precision; Julia/Octave for analytics.
M3d-M3g: Python removed; confidence values updated to 10.0 scale.
2026-07-14 00:50:09 +00:00

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# M3c — AMM & liquidity pool sims
## 1. Component
Automated Market Maker simulation: models **constant-product invariant mechanics, impermanent
loss, and the non-cooperative game between liquidity providers and arbitrageurs**. Pops here are
**LP positions and arbitrage bots** operating on the $x \cdot y = k$ curve. Grounded in the DEX/AMM
literature [1,2].
## 2. Status / certainty
DESIGN-FIRST · ABSENT. Mathematical foundations C5 (constant product invariant is proven);
impermanent loss formula C5 (closed-form: $\text{IL}(r) = \frac{2\sqrt{r}}{1+r} - 1$);
simulation parameterization C1.
## 3. Language & location
TBD · `src/economy/sims/amm/`. Needs precise fixed-point or arbitrary-precision arithmetic for
invariant calculations. Solidity for on-chain-equivalent precision; Julia or Octave for
analytical models.
## 4. Does / does-not
- **Does:** simulate constant-product pools with fee parameter $\gamma$:
$(x + \gamma \Delta x)(y - \Delta y) = k$; model impermanent loss as a function of price ratio
shift $r$; simulate LP strategies (provide, withdraw, rebalance) against arbitrageur behavior;
model non-linear price slippage from the curve geometry; produce bounded predictions on pool
profitability, IL risk, and optimal LP ranges.
- **Does-not:** model consensus mechanics (M3f); model social behavior (M3b); execute real swaps
(Marketplace does).
## 5. Interface contract
- Implements `query(PredictionQuery) -> BoundedPrediction` per M3 hub.
- **Output bounds:** IL ranges and pool return intervals.
Example: `{ value: -0.034, lower_bound: -0.058, upper_bound: -0.012, confidence: 9.00,
time_horizon: "7d", sim_type: "amm_liquidity" }` — projected impermanent loss for ETH/USDC pool.
Example: `{ value: 0.082, lower_bound: 0.041, upper_bound: 0.127, confidence: 8.50,
time_horizon: "30d", sim_type: "amm_liquidity" }` — net LP return (fees IL).
- **Time-horizon mapping** (all run concurrently, tick-advanced, 90:1 (1s wall = 90s sim)):
| Horizon | Primary models | Update cadence |
|---------|---------------|----------------|
| Tickhourly | Slippage curves, invariant state, JIT liquidity | Every swap event |
| Daily | IL accumulation, fee income, LP profitability | Hourly roll |
| Weekly | Optimal LP range recalculation, pool composition | Daily roll |
| Monthly | LP strategy evolution (passive vs. active rebalance) | Weekly roll |
| Annual | Pool lifecycle, fee tier competitiveness | Monthly roll |
| 5-year | AMM design evolution, concentrated liquidity adoption | Quarterly roll |
- **Prediction types:** `impermanent_loss`, `pool_return`, `optimal_range`, `slippage_estimate`,
`lp_withdrawal_threshold`.
- Calibration: ingests `dex_pool_state` and `price_tick` from M2.
## 6. Dependencies & stubs
- M2 Data Feeds — pool state and price data; *stub:* canned pool snapshots.
- M3 Sims hub — lifecycle management; *stub:* manual init.
## 7. Invariants / laws
- **L1 (C5):** the **constant product invariant** $x \cdot y = k$ (adjusted for fees $\gamma$)
is the ground truth — all pool state transitions must satisfy the invariant or the sim is wrong.
- **L2 (C5):** **impermanent loss** follows the proven formula
$\text{IL}(r) = \frac{2\sqrt{r}}{1+r} - 1$ — the sim must reproduce this exactly for the
base case (no fees, no concentrated liquidity).
- **L3 (C4):** LP withdrawal thresholds are **derived from IL, not hardcoded** — the sim
calculates at what price ratio a rational LP withdraws, based on the IL formula and fee income.
## 8. Build steps
1. Implement the constant-product pool simulator with fee parameter.
2. Verify IL formula reproduction against known inputs.
3. Add LP pop strategies (passive hold, active rebalance, just-in-time liquidity).
4. Add arbitrageur pops (sandwich, backrun).
5. Wire M2 pool state data → calibration.
## 9. Tests
Invariant: every swap satisfies $(x + \gamma \Delta x)(y - \Delta y) = k$. IL formula: matches
closed-form for known price ratios. Slippage: large swaps produce greater slippage than small.
LP threshold: LP withdraws when IL exceeds fee income. Bounds: all outputs bounded.
## 10. Open items
- Concentrated liquidity (Uniswap v3 style) — extends the base model significantly.
- Multi-pool routing (split swaps across pools).
- Which specific pools to simulate (ETH/USDC? stablecoin pairs?).