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We design, build, and operate web applications, AI agents, smart contracts, data systems, and internal tools.

Mutative is a software studio in Paris. We build our own products and help teams build theirs.

Who we work with

Current client

Stake DAO

VisitGitHub

We help Stake DAO build and operate its DeFi protocol.

Onchain
Contracts and cross-chain infrastructure
Offchain
Indexers, internal tools, interfaces, and docs

Products

One live. More coming.

multisig.sh

Agent-built Safe transactions.

Open
multisig.shDemo
Request in Claude

“Pay the infrastructure invoice from Operations.”

multisig.sh OutboxDecoded
Send USDC → 0x7C3F…9A21

Nothing sent onchain

AgentRead and draft
PeopleReview, propose, sign, execute

Writing

Technical notes.

Contracts, infrastructure, internal tools, and interfaces.

Open the library
Latest · 10 minEthereum Storage ProofsDerive, request, and verify authenticated Ethereum state.

Team

Three generalists building across product, design, engineering, and operations. Our work overlaps; each of us brings a different center of gravity.

WarrenTurns ideas into product direction and system architecture, then works through the implementation.Lao0niTurns requirements into back-end systems, internal tools, and operational workflows.OxVeTurns product intent into clear interfaces and carries the interaction details through implementation.