FabricBloc
Agent-native onchain platform, wallets, tokens, NFTs and vaults as APIs
Published September 17, 2026
The problem
A team building a wallet-backed product, a game, a loyalty programme, a fintech app, a marketplace, faces the same assembly problem every time. Embedded wallets come from one vendor. Token issuance from another. NFT infrastructure from a third. RPC from a fourth. Each arrives with its own authentication model, its own SDK and its own billing relationship, and the integration surface becomes the product team's problem.
Underneath that sits a harder constraint. Non-custodial wallets traditionally mean seed phrases, and asking a mainstream user to safeguard twelve words before they have received any value ends most consumer use cases before they start.
What we built
Wallet infrastructure
Embedded non-custodial wallets in both MPC and EOA form. MPC threshold signing splits key material so no single party ever holds a complete key. ERC-4337 account abstraction sits on top, with a transaction bundler built in-house. Gas sponsorship means a new user can transact without first acquiring native tokens.
Contract deployment
Factory contracts with proxy patterns, so issuing a token or deploying an NFT collection is an API call rather than a Solidity engagement. Supports ERC-20, ERC-721 and ERC-1155.
Blockchain indexer
Built as a shared service rather than per-client, wired into the platform's own internal infrastructure while exposing APIs clients can call directly. One ingestion pipeline serves both.
Agent access
A production MCP server in Node/TypeScript exposing wallet operations as native tools for AI agents. Clean Architecture, MPC threshold signing, OAuth 2.0 + PKCE, and SSE streaming reporting key-generation ceremony progress in real time.
Outcome
- Five point-solution vendors consolidated into one API surface and one authentication model
- Seed-phrase-free onboarding for end users, with custody remaining non-custodial
- Gas sponsorship removes the acquire-native-tokens step before a user's first transaction
- Token and NFT deployment reduced from a Solidity engagement to an API call
- A single indexing pipeline serving both platform-internal state and client-facing data APIs
- Agent-native access to onchain operations, still uncommon in this category
