In this session of the Cardano Developer Office Hours, Raul Rosa and Matteo Coppola explore two key topics shaping the Cardano developer ecosystem: decentralized oracles and sponsored transactions, also known as Babel fees. They compare oracle architectures such as Charlie3, Artifacx, and Fluid Tokens’ proxy model, examine how these designs influence smart contract development, and introduce Aquarium, an open-source protocol enabling users to pay fees in custom tokens instead of ADA, covering UTXO trade-offs, fee abstraction, and more.

In this session of the Cardano Developer Office Hours, Fabian Bormann and Max Grützmacher share the latest progress on improving wallet connections across the Cardano ecosystem. They explore new connection flows, deep-linking with CIP-158, early design considerations behind CIP-144, and how updated standards and tools aim to deliver smoother mobile and desktop interactions, more consistent dApp–wallet communication, lessons from CIP-45 adoption challenges, PeerJS-based desktop-to-mobile flows, and more.

In this session of the Cardano Developer Office Hours, Giovanni Gargiulo introduces CIP-113, a proposal that brings programmable tokens to Cardano through a powerful and flexible new standard. He explores how CIP-113 enables advanced token logic, on-chain rule enforcement, and secure state transitions, unlocking enterprise-grade assets, compliance workflows, and next-generation dApps, while explaining its core design, practical use cases, and why programmable tokens matter for builders, and more.

In this session of the Cardano Developer Office Hours, Fergal O’Connor and Jaime Caso Onzain introduce Veridian, a new identity framework developed by the Cardano Foundation to enable secure, verifiable, and interoperable digital identity on Cardano. They explore how Veridian supports credential issuance, verification, and lifecycle management through open standards, privacy-preserving design, and a flexible architecture, including its approach to decentralized credentials, system components such as issuers, holders, verifiers, registries, and more.

In this session of the Cardano Developer Office Hours, Satya Ranjan presents Yaci DevKit, a comprehensive toolset designed to simplify and accelerate Cardano development. He covers setting up a local devnet in minutes, building and testing smart contracts and dApps, exploring integration workflows, and more.

In this session of the Cardano Developer Office Hours, the High Assurance Lab (HAL) team presents Moog and MPFS, two components designed to bring reliable, blockchain-native stress testing to Cardano and beyond. They explore how Moog leverages the Merkle Patricia Forestry smart-contract library to coordinate access to Antithesis, enabling large-scale distributed testing with on-chain auditability, traceability, secure access control, insights into the Layer Hackathon, and more.

In this session of the Cardano Developer Office Hours, Marungsha Brahma presents LW3’s Hydra-powered Digital Product Passport platform, built for the EV supply chain and aligned with upcoming European DPP requirements. He explores how LW3 leverages Cardano Layer 1 and Hydra Layer 2 to tokenize EV batteries using CIP-68, enable high-frequency, real-time operational updates, and balance privacy with transparency at industrial level, covering compliance, asset movement to Hydra, and more.

In this session of the Cardano Developer Office Hours, Santiago Carmuega from TxPipe and Darlisa Consoni from the Cardano Foundation present Tx3, a new domain-specific language for Cardano transactions. They cover how it simplifies UTxO abstraction, enables reusable interfaces for dApps, and explore associated tools like tx3app, trixs, tx3.land, and more.

In this session of the Cardano Developer Office Hours, Matthias Benkort from the Cardano Foundation presents the latest Ogmios 6.14.0 release and the 2025 Developer Ecosystem Survey. He covers new node integrations, improved query capabilities, and how the survey gathers privacy-first, multilingual feedback to shape future developer tools and ecosystem direction, and more.

Below is a well-deserved Q3 update highlighting ecosystem tooling and solutions across July, August, and September.

The past three months have been packed with releases, integrations, and upgrades that continue to strengthen Cardano’s developer tooling and infrastructure. With more than 240 pull requests merged across the Foundation’s Java ecosystem, it’s been a quarter of consistent growth, performance improvements, and developer-first innovation. Check out the highlights below to see what’s been delivered.