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ParaLens is a free HTTP API that decodes any Ethereum transaction into a structured TxReport JSON object. Whether you’re building a transaction explorer, an AI agent that reasons about on-chain activity, a wallet history enricher, or a compliance triage tool — ParaLens gives you a clean, machine-readable breakdown covering intent classification, token flows, economics, DeFi position effects, structural motifs, and actor attribution. No signup. No API key. Just POST a hash and read the report.

Quick Start

Send your first /analyze request in under 5 minutes

API Reference

Full endpoint and schema documentation

Use Cases

See how teams use ParaLens in production

Integration Guides

Connect ParaLens to your app or agent

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How It Works

1

No signup needed

The API is free and requires no authentication today. Just pick a transaction hash and start querying.
2

POST a transaction hash to /analyze

Send a JSON body containing your chain and tx_hash to https://paralens-production.up.railway.app/analyze.
3

Read the TxReport

The response contains a full structured report: intent classification, token economics, actor attribution, and more.
4

Build your UI or feed the report to an LLM

Use the TxReport directly in your frontend, pipe it into an AI agent, or stream it into a compliance workflow.

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Feature Highlights

25+ Intent Kinds

Swap, Arbitrage, MEV, Liquidation, Bridge, Deposit, Withdrawal, and more — every transaction gets a label.

Actor Attribution

Identifies the true economic actor, even when the signer is a router, bot, or smart wallet.

Token Flow

Per-subject inventory deltas show exactly who sent what to whom and in which direction.

Realized PnL

Computes profit and loss for atomic, self-closing flows such as on-chain arbitrage.

DeFi Position Effects

Surfaces borrow, repay, collateral, and liquidity events from lending and AMM protocols.

Motif Proofs

Structural patterns like ProtocolSwap and ClosedValueFlow serve as auditable evidence behind every classification.