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API Reference

Base URL: http://localhost:3000

Pagination

All list endpoints support pagination:

Parameter Default Max Description
page 1 - Page number
limit 20 100 Items per page

Response format:

{
  "data": [...],
  "page": 1,
  "limit": 20,
  "total": 1000,
  "total_pages": 50
}

Endpoints

Status

Method Path Description
GET /api/height Current block height and indexer timestamp (lightweight, safe to poll frequently)
GET /api/status Full chain status: chain ID, chain name, block height, total transactions, total addresses
GET /health Health check (returns "OK")

/api/status response:

{
  "chain_id": 1,
  "chain_name": "My Chain",
  "block_height": 1000000,
  "total_transactions": 5000000,
  "total_addresses": 200000,
  "indexed_at": "2026-01-01T00:00:00+00:00"
}

chain_name is set via the CHAIN_NAME environment variable.

Blocks

Method Path Description
GET /api/blocks List blocks (newest first)
GET /api/blocks/:number Get block by number
GET /api/blocks/:number/transactions Get transactions in block

Transactions

Method Path Description
GET /api/transactions List transactions (newest first)
GET /api/transactions/:hash Get transaction details
GET /api/transactions/:hash/logs Get event logs
GET /api/transactions/:hash/logs/decoded Get decoded event logs with signatures
GET /api/transactions/:hash/erc20-transfers Get ERC-20 transfers in transaction
GET /api/transactions/:hash/nft-transfers Get NFT transfers in transaction

Addresses

Method Path Parameters Description
GET /api/addresses is_contract, from_block, to_block, address_type List addresses
GET /api/addresses/:address - Get address details
GET /api/addresses/:address/transactions - Get address transactions
GET /api/addresses/:address/transfers transfer_type (erc20/nft) Get all transfers
GET /api/addresses/:address/nfts - Get NFTs owned
GET /api/addresses/:address/tokens - Get ERC-20 balances
GET /api/addresses/:address/logs topic0 Get event logs
GET /api/addresses/:address/label - Get address with label

Address Types: eoa, contract, erc20, nft

NFT Collections

Method Path Description
GET /api/nfts/collections List NFT collections
GET /api/nfts/collections/:address Get collection details
GET /api/nfts/collections/:address/tokens List tokens in collection
GET /api/nfts/collections/:address/transfers Get collection transfers
GET /api/nfts/collections/:address/tokens/:token_id Get token details
GET /api/nfts/collections/:address/tokens/:token_id/transfers Get token transfer history

ERC-20 Tokens

Method Path Description
GET /api/tokens List ERC-20 tokens
GET /api/tokens/:address Get token details (includes holder/transfer counts)
GET /api/tokens/:address/holders Get token holders with balances
GET /api/tokens/:address/transfers Get token transfers

Event Logs

Method Path Parameters Description
GET /api/logs topic0 (required) Filter logs by event signature

Address Labels

Method Path Parameters Description
GET /api/labels tag, search List labels
GET /api/labels/:address - Get label for address
GET /api/labels/tags - Get all tags with counts
POST /api/labels Body: {address, name, tags[]} Create/update label
POST /api/labels/bulk Body: {labels: [...]} Bulk import labels
DELETE /api/labels/:address - Delete label

Contract Verification

Method Path Description
GET /api/contracts/:address/abi Get verified ABI
GET /api/contracts/:address/source Get verified source code
POST /api/contracts/verify Verify contract source

Verification Body:

{
  "address": "0x...",
  "source_code": "...",
  "contract_name": "MyContract",
  "compiler_version": "v0.8.19+commit.7dd6d404",
  "optimization_enabled": true,
  "optimization_runs": 200,
  "constructor_args": "0x...",
  "evm_version": "paris",
  "license_type": "MIT",
  "is_standard_json": false
}

Proxy Contracts

Method Path Description
GET /api/proxies List detected proxy contracts
GET /api/contracts/:address/proxy Get proxy info
GET /api/contracts/:address/combined-abi Get merged proxy + implementation ABI
POST /api/contracts/:address/detect-proxy Trigger proxy detection

Proxy Types: eip1967, eip1822, transparent, custom

Search

Method Path Parameters Description
GET /api/search q (required) Universal search

Searches across:

  • Block numbers
  • Transaction hashes
  • Addresses
  • Contract/token names

Etherscan-Compatible API

For tooling compatibility, the following Etherscan-style endpoints are supported:

Account Module

GET /api?module=account&action=balance&address=0x...
GET /api?module=account&action=balancemulti&address=0x...,0x...
GET /api?module=account&action=txlist&address=0x...
GET /api?module=account&action=txlistinternal&address=0x...
GET /api?module=account&action=tokentx&address=0x...
GET /api?module=account&action=tokenbalance&address=0x...&contractaddress=0x...

Contract Module

GET /api?module=contract&action=getabi&address=0x...
GET /api?module=contract&action=getsourcecode&address=0x...
POST /api?module=contract&action=verifysourcecode

Transaction Module

GET /api?module=transaction&action=gettxreceiptstatus&txhash=0x...

Block Module

GET /api?module=block&action=getblockreward&blockno=123

Proxy Module (RPC)

GET /api?module=proxy&action=eth_blockNumber
GET /api?module=proxy&action=eth_getBlockByNumber&tag=0x...&boolean=true
GET /api?module=proxy&action=eth_getTransactionByHash&txhash=0x...

Notes

  • All address parameters accept with or without 0x prefix
  • Addresses are case-insensitive (normalized to lowercase)
  • Transaction hashes accept with or without 0x prefix