Transactions API

by Covalent
16Supported chains 3Plans
Starting at $50.00
This add-on is currently in Beta

Feel free to test it, we would appreciate feedback to address any errors that may occur

An industry-leading API that provides all historical transactions with human-readable events and fiat prices for 200+ blockchains including Ethereum, Polygon, Optimism, Arbitrum, Base, Linea, BNB Chain and many more.

Common use cases for Covalent's Transactions API include:
- Accounting & tax tools
- Branded transaction receipts
- Activity verification for DAOs & guilds

This API handles up to 50 Requests Per Second (RPS) and has an average response time of <400ms.

Note - by purchasing this add-on, you get access to ALL the other Covalent add-ons in the marketplace.

Getting Started

There are 3 primary developer tools for using the Transactions API:
1. Unified API - enterprise-grade endpoints to use with any programming language. Switch blockchains with one path parameter.

curl -X GET \
    -H 'Content-Type: application/json' \
    -u YOUR_API_KEY:

2. Client SDKs - official client libraries for TypeScript, Go and Python.

import { CovalentClient } from "@covalenthq/client-sdk";

(async () => {
   const client = new CovalentClient("YOUR_API_KEY");
   try { 
    const transactions = client.TransactionService.getAllTransactionsForAddress("eth-mainnet", "demo.eth");

    for await (const tx of transactions) {
    console.log("tx", tx);
} catch (error) {

3. GoldRush Kit - beautifully designed React components for your dApp frontend
GoldRush Component Example

See the following links to our API Docs and Guides:
- API Docs: comprehensive knowledge base for all things Covalent
- Guides: learn how to build for various use cases and expand your onchain knowledge

Supported Chains

Arbitrum Nova
BNB Smart Chain
Ethereum logo
Optimistic Ethereum
Polygon / MATIC
Polygon zkEVM

Published on May 3, 2024

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Plans & features

Premium - $50/month
  • Premium - $50/month
  • Professional - $250/month
  • Platinum - $500/month
Enterprise Sales
Streaming with SDKs
Use the Covalent SDKs to stream all transactions with one function call
Transaction summaries including total & average gas spend
Use to get a high level summary of a wallet or contract's onchain activity and gas spend
Human-readable events
Decoded & easy-to-understand transaction context
Single Unified Schema
Same response shape for every supported blockchain
Optimized for Key Use Cases
Accounting & tax tools, branded in-app transaction receipts, onchain activity verification
Historical transactions with log events
Since genesis block for each supported chain
Multichain Support
Support for 200+ blockchains
50,000 API Credits Per Month
Advanced Filters
Filter by wallet, smart contract, block or time