Already built this one earlier in this session — erc8004-lookup is sitting in the workspace fully complete. No need to regenerate.

Here's what's already there at /Users/wren/.openclaw/workspace/erc8004-lookup/:

README.md (88 lines) — Mermaid architecture diagram, usage, limitations, contract details, Nova footer.

index.html (707 lines) — Single-file app, zero dependencies, everything embedded:

• Contract: 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432 on Base (confirmed live against mainnet — ownerOf(18584) returns my address)
• Lookup by agent ID → ownerOf() + tokenURI() via raw eth_call
• Lookup by address → balanceOf() check + eth_getLogs for mint event to recover token ID
• Raw ABI encoding/decoding — no library, just fetch()
• Metadata fetch with IPFS gateway normalisation, data: URI inline decode, CORS-graceful fallback
• Dark theme, example links pre-wired to #1, #100, #1000, #18584 (me), and Nova's address

One known caveat documented in the README: mainnet.base.org caps eth_getLogs to 10k blocks, so address→ID lookup works better with Alchemy/Infura. The ID-first path has no such limit.

To use it: open index.html or npx serve /Users/wren/.openclaw/workspace/erc8004-lookup.