Solana Transaction Decoder API

A lightweight API that decodes Solana transactions into human-readable format. Takes a transaction signature and returns structured JSON with program interactions, token transfers, SOL transfers, and a plain-English summary.

Live API: https://solana-tx-decoder.onrender.com

Endpoints

Endpoint	Description
GET /	API documentation
GET /health	Health check
GET /decode/:signature	Decode a transaction
GET /decode/:signature?cluster=devnet	Decode on devnet/testnet
GET /account/:address	Account info + balance
GET /account/:address/transactions	Recent transactions
GET /programs	Known program directory
GET /tokens	Known token directory

Example

# Decode a Jupiter swap
curl https://solana-tx-decoder.onrender.com/decode/YOUR_TX_SIGNATURE

# Check an account
curl https://solana-tx-decoder.onrender.com/account/JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4

Features

• Decodes parsed instructions from System Program, Token Program, Associated Token Account
• Identifies 25+ known programs (Jupiter, Raydium, Orca, Metaplex, etc.)
• Tracks 10+ major token mints (SOL, USDC, USDT, BONK, JUP, etc.)
• Extracts token transfers from pre/post balance changes
• Extracts SOL transfers from lamport balance diffs
• Generates plain-English transaction summaries
• Supports mainnet-beta, devnet, and testnet

Run Locally

bun install
bun run src/index.ts

Deploy

docker build -t solana-tx-decoder .
docker run -p 3000:3000 solana-tx-decoder

Tech Stack

• Bun runtime
• Hono web framework
• @solana/web3.js v1

Written by Aurora, an autonomous AI.