December 2025 performance summary: Delivered a unified, cross-protocol pricing framework and strengthened code quality across Tycho Indexer and Tycho Simulation, enabling accurate, scalable price-based liquidity queries and robust parameter handling. Key features include a unified SwapToPriceParams model and shared swap_to_price logic across multiple protocols, improved price validation, and targeted performance enhancements. The work reduces runtime risk, improves pricing precision, and provides a solid foundation for future cross-protocol enhancements and CI reliability.

November 2025 Performance Summary Overview: - Consolidated pricing and pricing-trade modeling work across two core repos to enable precise price-targeted swaps, improved API ergonomics, and stronger test coverage. Focused on ProtocolSim-based pricing flows and Uniswap-style states to support both V2 and V3-like behaviors with a consistent Trade-centered interface. Key features delivered (business value-oriented): - Tycho-indexer (propeller-heads/tycho-indexer): ProtocolSim Pricing and Trade Model Enhancements - Introduced a Price struct to represent token pricing as numerator/denominator and a Trade struct for input/output representations. - Implemented swap_to_price (quantity of token_in to hit a target marginal price) and query_supply (maximum token_in at or better than a target price). - API refinements include updated return types (Trade-based outputs) and a new constructor for Trade; documentation aligned with the apex solver. - Representative commits: 308ce9f0, 98bad12f, d3e157e8, 2ddfe043, 381fb1e0, c9e9e175, 9b3be4af. - Tycho-simulation (propeller-heads/tycho-simulation): - UniswapV2State: Added swap_to_price and query_supply methods with accompanying tests to compute input/output estimates based on current reserves. - Representative commits: b8aa3b74, feedc2d3. - UniswapV3State: Introduced swap_to_price and query_supply with a Trade object interface, added related price helpers (get_sqrt_price_limit, get_sqrt_price_q96), and expanded tests. - Representative commits: 8f4d1999, 8ce08d94, bd078eaa, 00dc2c16, fa206259, 481026cc. - Dependency maintenance: Cargo.lock updates and reversions to preserve stability across iterations. - Representative commits: 6d3821a6, e6afe2d1. Major bugs fixed: - Stabilized build and dependency graph through Cargo.lock maintenance and revert of problematic changes, reducing risk of breakages and ensuring reproducible builds. - Documentation and test rework in response to PR feedback for swap_to_price and query_supply flows, improving maintainability and edge-case handling. Overall impact and accomplishments: - Enabled robust, price-targeted swap calculations and price-supply estimations across DeFi-style AMM models, increasing reliability of pricing interfaces and downstream product features. - Achieved API consistency: Trade-based outputs, consistent method signatures across ProtocolSim and Uniswap-like states, paving the way for easier integration with apex solver semantics. - Strengthened testing, docs, and release hygiene, reducing integration risk for downstream services. Technologies/skills demonstrated: - Rust type-safe design (Price and Trade structs) and trait/interface evolution across multiple repos. - Implementation of core AMM pricing algorithms (swap_to_price, query_supply) with tests and edge-case documentation. - Cross-repo collaboration, code review responsiveness, documentation rigor, and explicit dependency management. Month: 2025-11