Full-stack Web3 developer toolkit with embedded wallets, contract APIs, and bridging across 95+ chains
thirdweb provides Web3 developer infrastructure covering embedded wallets, pre-built smart contracts, account abstraction, and cross-chain routing. Its tools enable applications to onboard users through social logins, execute multi-chain swaps, and connect autonomous AI agents directly to blockchain networks across EVM-compatible chains and Solana.
Furqan Rydhan and Steven Bartlett founded thirdweb in 2021. The company raised a $5 million seed round in December 2021 with backing from Mark Cuban and Gary Vaynerchuk. In August 2022, thirdweb completed a $24 million Series A round at a $160 million valuation, led by Haun Ventures, Coinbase Ventures, and Shopify, bringing total funding to $29 million.
The platform delivers client SDKs in TypeScript, React, React Native, Unity, Unreal Engine, and .NET. Developers manage contracts and RPC endpoints through the thirdweb Dashboard or command-line interface. Embedded wallet tools provide non-custodial key generation authenticated via email, phone, or passkeys, alongside account abstraction features like gas sponsorship. Its bridging and payment layer, supporting over 95 chains, routes cross-chain swaps and integrates payments via the x402 protocol.
thirdweb offers a free Starter plan with standard credit limits. The Growth plan costs $99 per month and provides 48-hour response SLAs, engine cloud access, and server wallets. The Scale plan is $499 per month, adding 24-hour response SLAs, audit logs, and custom ecosystem wallet branding. Custom Pro enterprise tiers start at $1,499 per month and include dedicated account managers, 12-hour response SLAs, and uncapped rate limits.
By August 2022, thirdweb reported over 55,000 active developers using its toolkits. In April 2025, the team identified a front-running vulnerability affecting ERC20 approvals in its Bridge contracts. The active bridge contract was paused and patched immediately, but a legacy contract remained active. On December 10, 2025, unauthorized actors exploited the un-decommissioned legacy contract on Ethereum Mainnet against users holding open token approvals, prompting thirdweb to deploy a null implementation to stop exploitation.
Relying on thirdweb introduces infrastructure dependencies across managed RPC nodes and indexing pipelines. While client libraries and contracts are open source, developers face potential vendor lock-in around managed auth and ecosystem wallet services. Smart contract upgrade paths and token approvals also require careful tracking to avoid exposure to legacy contract vulnerabilities.
thirdweb provides full-stack Web3 developer tooling spanning wallets, contracts, and cross-chain payments, though unresolved legacy bridge contracts resulted in two security incidents in 2025.
thirdweb delivers an integrated development platform combining smart contract templates, embedded wallets, account abstraction, and managed RPC infrastructure. Its tooling supports EVM networks and Solana, eliminating the need to stitch together separate providers for authentication and node infrastructure. The platform also includes payment flows, bridging across 95+ chains, and tools for autonomous AI agents via Model Context Protocol (MCP) integrations.
Co-founded in 2021 by Furqan Rydhan and Steven Bartlett, the company raised $29 million across seed and Series A rounds from Haun Ventures, Coinbase Ventures, Shopify, Mark Cuban, and Gary Vaynerchuk. Pricing starts on a free starter tier, stepping up to paid plans: Growth at $99 per month with a 48-hour response guarantee, Scale at $499 per month with 24-hour response SLAs, and Pro starting at $1,499 per month for 12-hour response commitments.
Security history presents a notable operational trade-off. In April 2025, thirdweb uncovered a front-running vulnerability in its Bridge contracts that allowed unauthorized callers to abuse user ERC20 token approvals. While the primary Bridge contract was paused and fixed, a legacy contract remained active. In December 2025, unauthorized activity drained user funds from that un-decommissioned contract on Ethereum Mainnet, forcing an emergency upgrade to a null implementation.
The platform fits teams wanting an all-in-one stack to deploy smart contracts and generate in-app wallets without managing separate backends. Projects that require strict contract immutability or specialized high-throughput RPC clusters may prefer dedicated node operators like Alchemy or Infura.
| Services | Developer tooling, Wallet APIs, Account abstraction |
|---|---|
| Chains supported | 95 · unverified |
| Free tier | Yes |
| Pricing from | $99 / month · unverified |
| Enterprise SLA | Yes · unverified |
| Open source | Yes |
Not disclosed by the provider: Token, Uptime SLA, Free tier limits, Server regions.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Allows non-custodial user onboarding using email, phone numbers, passkeys, or social logins without manual seed phrase backups.
Supports ERC-4337 smart accounts and gas sponsorship through bundled relayer infrastructure across EVM networks.
Aggregates routing for cross-chain swaps across 95+ blockchains and supports x402 protocol payments.
Offers pre-built templates for ERC20, ERC721, and ERC1155 tokens alongside automated CLI deployment scripts.
Provides native integration libraries for TypeScript, React, React Native, Unity, Unreal Engine, and .NET.
Delivers globally distributed RPC endpoints and real-time blockchain data querying for application backends.
Cross-platform SDKs for TypeScript, React, React Native, Unity, Unreal Engine, and .NET to build onchain applications across EVM chains and Solana.
Embedded, ecosystem, and server wallets that support social login and passkeys alongside account abstraction and gas sponsorship.
Pre-built, audited smart contract templates and deployment workflows for ERC20, ERC721, and ERC1155 tokens.
APIs for cross-chain token swaps across 95+ chains, HTTP and agentic payments, and x402 protocol integration.
Global edge RPC gateways, data indexing, and IPFS storage pinning designed to route onchain reads and writes.
A crypto trading and swap application currently operating in beta.
User mentions primarily consist of links and promotional references to contracts or tools, with no substantial user reviews or distinct feedback themes identified.
Based on 14 Reddit posts and comments from the last 12 months, checked Oct 20, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
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Coinbase VenturesExchange ventures arm
Lead
HV Haun VenturesVenture capital
Lead
SH ShopifyVenture capital
Lead
thirdweb was founded in 2021 by Furqan Rydhan and Steven Bartlett. The company raised $29 million in total funding, including a Series A led by Haun Ventures, Coinbase Ventures, and Shopify.
thirdweb offers a free tier alongside three paid tiers: Growth at $99 per month, Scale at $499 per month, and Pro starting at $1,499 per month. Dedicated infrastructure add-ons and volume discounts are available on top tiers.
thirdweb supports Solana and all EVM-compatible chains. Its bridging tools support cross-chain token routing across more than 95 networks.
Yes, thirdweb faced two related bridge incidents in 2025. A front-running vulnerability was patched in April 2025, but an un-decommissioned legacy contract was exploited for user approvals in December 2025 before being replaced with a null implementation.
No, thirdweb does not have a native cryptocurrency token. It operates purely as a software and infrastructure service provider.
thirdweb provides embedded in-app wallets, ecosystem wallets, and server wallets. Users can authenticate through email, phone number, passkeys, or biometrics with account abstraction built in.
Recent public posts from @thirdweb, shown as published. Not reviewed or endorsed by CryptoReview.
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