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Carlo Miguel Dy
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Acc. VIII · Explorator octomilia — ERC-8004 field atlas, cultivated 2026

8004scan — ERC-8004 AI agent explorer

Product engineer · Early 2026 · AltLayer

Cross-platform explorer for the ERC-8004 agent standard — discovery, registration, reputation, and validation across 29+ EVM chains and Solana, shipping from one Next.js codebase as web, PWA, and Capacitor iOS + Android apps.

Explorator octomilia — ERC-8004 field atlas, cultivated 2026

Field notes

The context

Positioned in the official docs as the "Google Maps of the agent economy," 8004scan needed a conversational way to explore agents, a public developer API, and genuinely native behavior across four shells — web, PWA, iOS, and Android — from a single codebase.

Cultivation

What I built

  • Designed and shipped the in-app conversational chat surface against AltLayer's LLM platform — OAuth handoff, server-sent-event streaming, a dedicated chat layout, agent-context navigation, natural-language agent discovery, and AI-generated follow-up suggestions.
  • Built the public developer API surface — API-key authentication, tiered rate limiting, OpenAPI specification, and the hosted Swagger UI at the public developer-docs route, plus the Builder Hub navigation entry.
  • Hardened responsiveness across all four shells — prevented iOS auto-zoom on input focus, resolved horizontal overflow on agent details, and added App Store and Google Play download affordances to the footer.
  • Surfaced the trust and compliance layer (ISO 27001 + SOC 2 badges), kept score displays at consistent decimal precision, and shipped explicit coming-soon affordances where onchain coverage is still rolling out.
  • Integrated a user-follow system so the social graph inside the explorer became interactive across all four surfaces.
  • Generated a typed API client directly from the backend OpenAPI specification, so the FE / BE contract stays enforced at compile time across every shell the product ships on.

Root system

How it works

One Next.js codebase ships four surfaces: responsive web, installable PWA, and Capacitor-wrapped iOS and Android apps on the App Store and Google Play. The chat layer streams over server-sent events from AltLayer's LLM platform with OAuth handoff; the developer API is spec-first, with the same OpenAPI document generating the public Swagger UI and the compile-time-typed internal client.

Harvest

Outcomes

  • Live at 8004scan.io on web, PWA, iOS (App Store), and Android (Google Play) from a single codebase.
  • Conversational agent discovery shipped — users chat with an LLM that has agent context.
  • Public developer API live with key auth, tiered rate limiting, and hosted Swagger docs.
  • FE / BE contract enforced at compile time via the OpenAPI-generated typed client.
Pressed leaf — what it taught
Spec-first APIs compound: one OpenAPI document became the public docs, the rate-limited developer surface, and the compile-time contract for four app shells. Cross-platform polish is won in details like input-focus zoom and overflow — the shells amplify every rough edge.