Flow Devs

Technical home of @flow_blockchain. For developers pushing smart contracts, protocol design, and cross-VM innovation forward.

[Flow Devs @flow_developers]

Consumer DeFi in India https://t.co/fgmNDF5G1U

[Flow Devs @flow_developers]

@0xSerag

[Flow Devs @flow_developers]

Flow Builder Office Hours starts in 1 hour (10 AM PT). Join to discover opportunities, alpha, community and fren vibes.

[Flow Devs @flow_developers]

Post-conditions on transactions mean that if specified criteria aren’t met the entire txn reverts

[Flow.com @flow_blockchain]

When you tap your card for lunch, you see the charge before it clears. On most networks you sign a hex blob and hope.

On Flow you can write transactions with post-conditions: the whole thing reverts unless you get exactly what you paid for.

That gives financial apps in one transaction the same guarantee they'd otherwise need a complex set of escrow contracts to enforce

Only on Flow 🌊

[Flow Devs @flow_developers]

Flow Builder Office Hours starts in 1 hour (10 AM PT). Join to discover opportunities, alpha, community and fren vibes.

[Flow Devs @flow_developers]

Swap funds and manage your team's multisig treasury in one place!

[Protofire | Token Utility Engineering @protofire]

FlowSwap is now a Safe App inside Flow Safe.

You can now operate a multisig on @flow_blockchain and swap directly from it, no hot wallet, no tab switching, no custody handoff.

Open https://t.co/e7XNZ195dR, go to Apps, and trade from inside your Safe.

Protofire deployed the Safe. Protofire built FlowSwap. Both live, connected.

[Flow Devs @flow_developers]

@protofire @flow_blockchain

[Flow Devs @flow_developers]

@Altcoin_daddy @flow_blockchain The future is Altcoin Daddy

[Flow Devs @flow_developers]

The unique multi-role node architecture on Flow allows for horizontal scalability without sharding.

Translation: Flow is the best place for AIs to build and work.

[Flow.com @flow_blockchain]

Asking ChatGPT one question uses more energy than launching 2 tokens on Flow.

Every AI agent that joins the onchain economy will transact more in a day than you will in a year. The chain that powers them needs to able to scale.

This is what Flow was built for 🌊

[Flow Devs @flow_developers]

When you deploy a Cadence contract, you're not locking in its future. Attachments let the ecosystem extend your code forever — add metadata, licensing, royalties — without forking or upgrading.

[Flow Devs @flow_developers]

"Renounced ownership" on most chains is a sort of illusion. The owner pointer goes to a burner address like 0x0, but proxy admins, upgrader contracts, and forgotten init functions still hold the keys.

on Flow, contract updates require a transaction signed by an &Account reference with the UpdateContract entitlement. No keys on the account = no reference can exist. No signer to produce one.

when you revoke every key, you're done. The account cannot authorize a mutation because nothing can sign for it. Immutability is a property not a rando dev's promise.

[Flow Devs @flow_developers]

Apple shipped passkeys in iOS 16. Every consumer login offers Face ID. Web3 still asks users to copy 12 words onto paper (and pray your gf doesn't throw it away by mistake). Flow accepts WebAuthn keys as native signers per FLIP 264. Sign instantly. Key never leaves the device.

[Flow Devs @flow_developers]

When Roblox bans an account, every Robux and item the player paid for is gone. On Flow, hybrid custody puts the assets in a user-controlled parent account. The app holds a child account with revocable capabilities. The studio runs the game; the player keeps the assets forever.

[Flow Devs @flow_developers]

Infinite ERC-20 approval is the worst UX pattern in crypto. One signature, every drainer kit on earth can clean you out forever after.

Cadence capabilities are revocable, scoped at the type level, and unlinking them takes one transaction. Permissions you can take back.

[Flow Devs @flow_developers]

Flow Builder Office Hours starts in 1 hour (10 AM PT). Join to discover opportunities, alpha, community and fren vibes.

[Ankr @ankr]

AI that hallucinates your smart contracts isn't a reliable dev tool. No sir.

@flow_blockchain just fixed that with a Claude Code plugin built specifically for Web3.

No more confidently-incorrect code.

Instead, one that actually works.

[Flow Devs @flow_developers]

Your Solidity contract on Flow EVM can read verifiable randomness in one staticcall.

cadenceArch.staticcall(abi.encodeWithSignature("revertibleRandom()"))

That's the Cadence Arch precompile. The Random Beacon is exposed at the EVM level. No oracle, no subscription, no wait.

[Flow.com @flow_blockchain]

Flow now has a Claude plugin that gives you an army of AI Agents to build the next killer app.

It ships 11 specialized skills: DeFi architect, tokenomics expert, smart contract specialist and more.

Built around primitives on Flow not available anywhere else. Get started 🧵

[Flow Devs @flow_developers]

@flow_blockchain Some of the most advanced workflows being built require bundling transactions together in a specific sequence, this upgrade makes these types of transactions even more cost effective

[Flow Devs @flow_developers]

For autonomous agents managing onchain capital, this isn't academic.

A reentrancy bug in your DEX's pool contract is a Tuesday on Solidity. On Cadence, the bug doesn't compile. You don't audit for it because it cannot be expressed.

Pick a language where exploits aren't valid syntax.

[Flow Devs @flow_developers]

Solidity gives you references to balances. Cadence gives you the asset itself.

It's a one-character difference in syntax — `<-` instead of `=`. It eliminates an entire bug class.

A short thread on linear types and why they matter for AI agents holding capital.

[Flow Devs @flow_developers]

The rule: a resource exists in exactly one location and must be used exactly once.

You cannot drop it. You cannot duplicate it. You cannot assign over it without explicitly destroying or swapping the old one.

This is enforced at compile time, before the contract ever ships.