Sim IDX templates let you bootstrap fully-featured indexing apps in minutes. Each template ships with a production-ready listener contract, events, and REST API logic so you can focus on your custom business logic instead of boilerplate.

Contract Decoder

Quickly decode and index data emitted by any smart contract. The template scaffolds a listener that listens to function calls and events (pre-configured for the Uniswap V3 Factory) and surfaces the decoded results via an API.

sim init --template=contract-decoder

Uniswap V3 In-Range LPs

Index Uniswap V3 liquidity provision events and query which positions are in-range at any block. The template exposes an /lp-snapshot endpoint that returns all active LP positions for a given pool.

sim init --template=univ3-lp