Adam Cazes Show How Nexus dey Power GeroWallet and dey Track Cardano Activity

Adam Cazes, co-founder and CEO of A.D. Labs, show the infrastructure wey dey behind GeroWallet during Cardano Developers Office Hours. Him presentation focus on Nexus, the data and transaction platform wey dem first build for the wallet and wey don now dey available for other developers.

Cazes show how Nexus dey deliver portfolio information, find swap routes and monitor selected blockchain activity. E also talk about how e take use Yaci Store, the team work for AI agent infrastructure and the wahala wey dey support applications across multiple chains.

How Nexus dey Support GeroWallet and Other Applications

Crypto wallet dey gather information from different sources before user go see balance, transaction history or swap quote. E need to retrieve records from the blockchain, identify the assets wey relate to one account and connect dem with market information.

Cazes explain say GeroWallet before before dey rely on repeated requests to backend services to get this information. As users begin plenty, the team begin face higher network and maintenance costs. A.D. Labs come develop Nexus to organize data for their backend and deliver am to the wallet.

To show the workload well, e display one wallet wey get approximately 840 transactions. Each record fit contain multiple pieces of information, including metadata, scripts, collateral and unspent transaction outputs, or UTXOs. For Cardano, UTXOs be available outputs wey dem fit use construct new transactions.

Nexus dey support data access for Cardano, Midnight and Bitcoin. Cazes explain say Midnight need im own index because im architecture get features like proofs and DUST generation. Indexing dey organize blockchain information so applications fit retrieve the records wey dem need.

The platform still combine market data with decentralized exchange aggregator. For one demo application, Cazes enter one ADA swap amount and display proposed route, other available trading venues and the estimated price impact.

E identify SongMarketCap as Nexus partner wey dey use the platform market data and decentralized exchange aggregator. Other potential users wey e list include wallets, developers wey dey build applications and AI agents.

Another transaction-building demo produce one unsigned transaction for CBOR format, one way to encode data. The transaction must then be signed by the user wallet or application before dem submit am.

Blueprints dey Stream Cardano Transactions through WebSockets

Cazes also show how developers fit follow specific blockchain activity without dey ask repeatedly whether anything don change.

One common method, wey dem dey call polling, dey send requests at regular intervals. If no relevant transaction show, the request go return without new result. Applications wey dey check frequently fit therefore generate large numbers of requests even when things calm.

Nexus offer second approach through WebSockets, connections wey allow applications to subscribe to events and receive updates as dem arrive. Im Blueprints feature let developers define the activity wey dem wan follow.

During the session, Cazes create one subscription for transactions wey relate to one token policy for Cardano mainnet. E explain say developers fit also filter activity using address, staking credential or script hash, depending on the application. Results fit dey delivered at transaction level or for individual UTXOs.

Cazes present FluidTokens, one Nexus design partner, as example of how the system fit work for lending application. Im case study cover one script wey relate to 115 addresses and show say only small portion of the blocks wey dem examine get activity wey matter to the application.

For another polling demo wey involve the NIGHT token, Cazes report say approximately 80% of requests return without new information. The number of requests wey one application fit avoid depend on im polling frequency and the level of activity wey e dey monitor.

Developers also ask how streaming system dey handle rollback, event wey mean say previously observed chain history don change. Participants explain say rollback events fit dey delivered to subscribers, while the receiving application go update im own records accordingly.

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Yaci Store, AI Agents and Expansion Plans

Nexus mainly dey use Yaci Store to index Cardano data. Cazes explain say A.D. Labs dey run modified version based on Yaci Store 3.0 Beta 5 and dem don submit their changes to the upstream project.

The system fit also use other data providers as fallbacks. Cazes identify Koios as one source wey Nexus fit consult when information no dey available from im primary infrastructure.

During one comparison wey dem present for the session, Cazes report say Nexus get median lead of approximately two seconds over Blockfrost to deliver newly observed blocks for im test. E link the result partly to the Nexus architecture and how e dey use Yaci Store.

Beyond blockchain data, Nexus include one MCP server, wey dey provide way for AI agents to connect with supported tools and information. One participant suggest make dem add x402 facilitator, one component wey dem describe during the session as handling transaction submission and status tracking for agents.

Cazes respond say A.D. Labs don already start to build infrastructure for agent mode inside GeroWallet. Dem discuss the x402 facilitator as possible future service, with no launch wey dem announce during the presentation.

The team still dey consider support for additional networks, including EVM chains and Solana. Cazes connect that work with GeroWallet roadmap and the goal to make interactions across blockchains easier for users.

At the time of the session, Nexus offer seven-day trial and one introductory plan wey dem price at $9 per month. When dem ask about free tier, Cazes confirm say the team don consider am but dem never introduce am under their existing business model.

Disclosure: SongMarketCap dey use swap widget wey Gero Nexus power and dey receive share of the swap fees wey the widget generate.