Simple connectivity check — confirms the MCP server is reachable.

Returns the gas price distribution (base fee + priority fee percentiles) over the last N blocks. Works on any supported chain — does not require mempool access, just standard eth_feeHistory.

Args: chain: "polygon" or "arbitrum" block_count: number of recent blocks to sample (default 20, max 1024)

Watches the public mempool for pending transactions touching a given Uniswap v3 pool — either direct calls to the pool, or single-hop swaps routed through a known Uniswap v3 router (SwapRouter or SwapRouter02) whose calldata references both of the pool's tokens.

Polygon only — Arbitrum uses a centralized sequencer with no public mempool, so this isn't available there. See the README for details.

Note: only catches single-hop router swaps (exactInputSingle / exactOutputSingle). Multi-hop swaps (exactInput / exactOutput) encode the route as a packed path that isn't decoded yet — see roadmap.

Args: pool_address: the pool contract address (catches direct calls) token0: address of one of the pool's two tokens token1: address of the pool's other token chain: only "polygon" is currently supported duration_seconds: how long to watch, capped at 60 seconds (default 15)

Queries already-mined (confirmed) blocks for Uniswap v3 Swap events on the given pool. Returns the total swap count and a breakdown by the to address of each swap transaction (router, aggregator, or direct caller).

This is NOT a mempool tool — it reads finalized on-chain state via eth_getLogs. Use it to establish ground-truth swap volume and compare against check_pending_swaps_on_pool: a large gap between confirmed volume and pending detections points to a mempool coverage issue, not swap scarcity. Polygon only.

Args: pool_address: the Uniswap v3 pool contract address to query chain: only "polygon" is currently supported lookback_blocks: number of recent confirmed blocks to scan (default 600 ≈ 20 min at ~2 s/block on Polygon)