How does Farcaster integration work with Thirdweb Engine via B3OS?

B3OS connects Farcaster events, such as new casts or follows, to Thirdweb Engine via Neynar's SIWN. This allows you to trigger automated blockchain transactions or smart contract calls immediately following social interactions.

Do I need to manage my own private keys for these workflows?

No. By using Neynar's Signer (SIWN) for Farcaster and Thirdweb Engine for blockchain operations, your sensitive keys are managed securely within their respective environments, reducing the risk of key exposure in your automation scripts.

Can I use a self-hosted Thirdweb Engine instance?

Yes, B3OS is designed to connect to your self-hosted Thirdweb Engine instance, giving you full control over your backend wallet management and smart contract execution while benefiting from automated Farcaster triggers.

What kind of social actions can trigger a blockchain transaction?

You can automate workflows based on various Farcaster activities, including casting a specific keyword, liking a post, or following a profile, which then instructs Thirdweb Engine to execute a predefined smart contract function.

Farcaster + Thirdweb Engine Integration

Overview

Automate your social-to-onchain workflows by bridging Farcaster engagement with Thirdweb Engine's powerful backend infrastructure. Seamlessly trigger smart contract interactions and wallet management based on social signals using Neynar-managed signers and self-hosted execution engines.

Supported triggers and actions

Follow Farcaster User

Action

Follow a Farcaster user via Neynar API. Requires a connected Farcaster account with signer. Specify the target user by FID. Ideal for: community growth automation, follow-back workflows, onboarding flows.

React to Farcaster Cast

Action

Like or recast a Farcaster cast via Neynar API. Requires a connected Farcaster account with signer. Supports 'like' and 'recast' reaction types. Ideal for: engagement automation, community interaction, content curation, appreciation bots.

Delete Farcaster Cast

Action

Delete a Farcaster cast via Neynar API. Requires a connected Farcaster account with signer. Only the cast author can delete it. Ideal for: content moderation, automated cleanup, removing outdated announcements.

Post Farcaster Cast

Action

Post a cast (message) to Farcaster via Neynar API. Use this to share updates, announcements, or engage with the Farcaster community. Supports channels, threading (replies), and embeds (max 2 URLs). Max 1024 characters. Ideal for: price alerts, milestone announcements, community updates, automated social posts.

Thirdweb Engine: Create Backend Wallet

Action

Create a new backend wallet in your Thirdweb Engine instance. Returns the new wallet address, status, and type. Ideal for: provisioning wallets for automated transactions, setting up new signing wallets.

Thirdweb Engine: Send Transaction

Action

Send a raw transaction via your Thirdweb Engine. Takes pre-encoded calldata, destination address, and value. Queues the transaction and returns a queueId. Ideal for: arbitrary contract interactions, value transfers, custom calldata not covered by write-contract.

Create workflows with Farcaster integrations

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Overview

Supported triggers and actions

Create workflows with Farcaster integrations

FAQs about Farcaster

Overview

Supported triggers and actions

Create workflows with Farcaster integrations

FAQs about Farcaster