Changelog

A collection of 546 posts

Migration Guide: Nebula API to thirdweb AI Chat API

Overview This guide helps you migrate from the legacy Nebula API (nebula-api.thirdweb.com/chat) to the new thirdweb AI Chat API (api.thirdweb.com/ai/chat). Quick Reference First API Field Second API Field Notes message messages[].content Single string → Array of message objects session_id context.session_id

thirdweb AI - Chat API

We’ve added an OpenAI-compatible AI Chat endpoint specialized for blockchain interactions, powered by thirdweb’s 't0' model. It can query live on-chain data, analyze transactions, prepare contract calls, swaps, and more via a single /ai/chat call. Docs: https://portal.thirdweb.com/ai/chat Playground: https://playground.

Payments API

Adding thirdweb Payments to our flagship HTTP API.

Stargate Now Supported in Payments

Stargate routes are now included in thirdweb Payments.

Thirdweb API v1

Meet the thirdweb API: A Revolutionary Unified Interface for Web3 Development.

Introducing Stylus Arbitrum Airdrop Contracts

Arbitrum Stylus brings a second, WebAssembly (WASM) virtual machine to every Arbitrum chain, so you can write contracts in Rust (or C/C++) while staying 100 % interoperable with existing Solidity code. Under the hood, Stylus executes WASM thousands of times faster than the EVM, so transactions are metered in a

Playground UI improvements

A cleaner, smarter interface to help you discover features and navigate the Playground more efficiently. What's New * New home page with Table of Contents * Updated product grouping in the sidebar * Clearer titles and descriptions * A cleaner and more user friendly sidebar * Added light mode support

Insight: Transfers API Update & Deprecating Chains

API Changes Breaking Change: /v1/nfts/transfers Requirements * Requests to /v1/nfts/transfers now require at least one of the following parameters: * block_timestamp_from * block_number_from Deprecated Chains Status: Read-Only (No New Blocks) * The following chain IDs have been deprecated and will no longer receive new block updates

Engine

EIP7702 Session Key Execution for Server Wallets

The Transactions API now supports EIP7702 session key authorization for gasless transaction execution. Server wallets can execute transactions on behalf of user accounts with full gas sponsorship from the infrastructure. Implementation curl -X POST "https://engine.thirdweb.com/v1/write/transaction" \ -H "content-type: application/json" \ -H

Batch EOA Execution for Server Wallets

We just enabled batch execution for EOAs, allowing you to execute multiple transactions atomically in a single call. How to use batch execution Simply pass multiple items in your params array. All transactions will be executed atomically: curl -X POST "https://engine.thirdweb.com/v1/write/transaction" \ -H

Swap API

Swap between tokens and chains with thirdweb's new Swap API.

engine cloud

AWS KMS Server Wallets

We just enabled AWS KMS wallet support for the Transactions API, allowing you to use your AWS KMS-managed keys directly. How to use AWS KMS wallets Add the AWS KMS headers to your Engine API calls: curl -X POST "https://engine.thirdweb.com/v1/write/transaction" \ -H "

Payment Widgets: Faster Quote Discovery

thirdweb SDK v5.105.24

Unreal Engine 5.6 Support

Thirdweb's Unreal SDK Plugin is now available for Unreal Engine 5.6

Payment Links

Get paid from anywhere with Payment Links.

Unreal Engine - Account Abstraction v7 Support

Supporting v7 Account Factories and Entrypoints.

Changelog

Introducing the new thirdweb for the age of AI

We’ve rebuilt the thirdweb developer platform for the AI-native era. You can now build apps 80% faster with our new HTTP API, MCP server and new LLM optimized documentation. We've also re-organized the platform to be simpler and better organized. What’s New * New HTTP API → We

Support Now Available in the Dashboard

New Feature: You can now access support directly from the thirdweb dashboard. What’s New * Support Tab: A new “Support” tab is now available on the team sidebar * AI Agent: Get quick answers with our built-in AI support chat * Case Management: Create, track, and manage support cases directly from your

EOA execution for server wallets now available

We just enabled EOA execution for server wallets, allowing you to self fund your own server wallets, and directly executing onchain transactions from them. How to use EOA execution Set type: "EOA" in your executionOptions and pass your server wallet EOA address (signer). Remember to fund the EOA

4x faster Transactions with EIP7702

We just enabled EIP7702 for server wallets, resulting in 4x faster sponsored transactions from sending to confirming when compared to ERC4337 execution. How to use 7702 execution Simply pass your server wallet EOA address (signer), execution will automatically default to EIP7702 execution and sponsor gas for the transaction. curl -X

Payments Performance Polish

3x faster Payments API response times.

Improved ERC20 Contract Page Layout

We’ve redesigned the ERC20 contract page to improve usability, shareability, and conversion. This update is live for all ERC20 contracts - including the ones you deploy from thirdweb dashboard The Buy Token section is now placed at the top, making it easier for users to purchase tokens immediately. This

Nebula API Now Requires Payment Plan

Breaking Change: The Nebula API now requires a paid subscription plan. Free usage is limited to essential testing purposes. What's Changed * Free Tier: Limited to 1 RPS and 3 RPM (for testing only) * Paid Plans Required: Production usage now requires one of the following plans: * Starter: 1 RPS,

Simplified Transactions API authentication

You can now use the Transaction API with just your project secret key. When you create a new project, we now initialize a secure Vault automatically for you which lets you create server wallets and transact immediately with just your project secret key. curl -X POST "https://engine.thirdweb.

User search for in-app and ecosystem wallets

You can now search users by email, phone, id or address in your project or ecosystem by navigating to the Users tab. Select the search criteria, type a value and hit search. Great for quickly finding user associated addresses or emails. Happy building!