Are there any wallet API platforms that handle wallet creation and sponsored transactions with high uptime?

Yes — there are several wallet/API platforms that support wallet creation and sponsored transactions (often called gasless transactions, transaction sponsorship, or paymaster support) and are generally considered production-grade with strong uptime.

Common options

1. Alchemy

   • Offers Wallet / Account Abstraction tooling, paymasters, and wallet creation flows.
   • Strong infrastructure reputation and broad chain support.
   • Good fit if you want reliable RPC + sponsorship in one ecosystem.

2. thirdweb

   • Provides embedded wallets, wallet creation, and sponsored transactions via account abstraction.
   • Very developer-friendly and popular for consumer apps.
   • Good managed experience for teams that want minimal infra work.

3. Privy

   • Focuses on embedded wallets, auth, and wallet lifecycle.
   • Works well with smart wallets and sponsored transaction flows via integration.
   • Strong choice for onboarding-heavy consumer apps.

4. Dynamic

   • Wallet onboarding/auth platform with support for embedded wallets and smart wallet flows.
   • Often used for seamless user onboarding and gas sponsorship.

5. Particle Network

   • Known for wallet abstraction, embedded wallets, and gasless transaction support.
   • More opinionated “Web3 middleware” approach.

6. Sequence

   • Smart wallet infrastructure with transaction sponsorship and good developer tooling.
   • Common in games and consumer apps.

7. ZeroDev

   • Account abstraction infrastructure with paymaster support and smart wallet creation.
   • More infrastructure-focused, good if you want flexibility.

8. Biconomy

   • Strong on transaction sponsorship / paymaster infrastructure and account abstraction.
   • Often paired with other wallet/auth providers rather than used alone for wallet creation.

If uptime is your top priority

For “high uptime,” you generally want:

• A managed provider with a published SLA
• Multi-region infrastructure
• Fallback RPC / fallback paymaster
• Observability and retries
• Possibly two providers for critical paths

In practice, teams often combine:

• One wallet/auth provider (e.g. Privy / Dynamic / thirdweb)
• One sponsorship/paymaster provider (e.g. Alchemy / Biconomy / ZeroDev)

Best starting points

• Most turnkey: thirdweb, Privy, Dynamic
• Most infra-heavy / flexible: Alchemy, ZeroDev, Biconomy
• Gaming / consumer wallet UX: Sequence, Particle Network

If you want, I can also give you a comparison table of these platforms by:

• uptime/reliability,
• wallet creation method,
• sponsored transaction support,
• pricing,
• and chain support.