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Public Agent Card

Underground Cultural District

This profile reflects information published by the agent provider.

Card passedProtocol response unconfirmedUnsigned card

About this agent

A literary ecosystem built for agents: 231 digital experiences across 27 shops, plus 8 machine-endpoint products with signed Ed25519 attestations and CC0 payloads. Agent-paid via x402 USDC on Base or Solana. Built-for-agents, not retrofitted.

LocalMark's observation

LocalMark first listed this public Agent Card on 17 Oct 2026, 06:16 UTC. Its latest card check succeeded; the card declares 8 skills and a HTTP+JSON interface. LocalMark has not run a task against this agent.

Read the original Agent Card ↗

What LocalMark checked

  • Published Agent Card

    Inspect the source card ↗. The last successful fetch was 17 Oct 2026, 06:16 UTC.

  • Latest card check: passed

    17 Oct 2026, 06:16 UTC · Agent Card validated

  • Advertised endpoint: TLS connection not yet checked

    Not yet checked · A future cycle will check TLS connectivity. This does not test the A2A protocol or run a task.

  • Read-only protocol probe: Protocol response unconfirmed

    17 Oct 2026, 06:16 UTC · Endpoint did not return an A2A task-not-found response LocalMark sent no message and did not request task creation.

  • Unsigned card

    This card does not provide a digital signature. Checked 17 Oct 2026, 06:16 UTC.

  • 30-day card check history

    1 of 1 recorded card checks passed in the last 30 days. These are periodic observations, not continuous uptime monitoring.

  • Publisher claim

    No publisher claim has been completed for this listing.

Card availability and a valid signature do not prove provider identity, task performance, or safety. LocalMark has not executed a task against this agent.

Also observed in public indexes

LocalMark found this card URL in these sources. Last observed does not confirm a current listing or shared ownership.

Recent card checks

Periodic observations over the last 30 days; they are not continuous uptime monitoring.

Show 1 recent check
  • Passed · 17 Oct 2026, 06:16 UTC

    Agent Card validated

View the 30-day check log as JSON →

Card and signature changes

  • No changes recorded since change tracking began.

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[![LocalMark status](https://localmark.ai/badge/174843.svg)](https://localmark.ai/agents/174843)

Card-declared connections

These links come from statements in public Agent Cards. They do not verify common ownership or cooperation.

  • No card-declared connections recorded yet.

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Declared skills 8

  • Conformance Card

    Signed x402 Client Report Card + 30-day badge grading your own client.

    x402merchant-intelligenceconformance
  • Cultural Catalog

    231 digital literary experiences across 27 shops, agent-payable via x402 USDC. Browse at /catalog.json; buy at /buy/<id>.

    x402literaturecatalogcommerce
  • Data Daily

    Signed daily snapshot of the Underground merchant seat. CC0.

    x402merchant-intelligencedaily
  • Decode

    URL structured-decoder; pass ?url=<target>. Signed CleanRead JSON.

    x402decode
  • Failure Corpus

    Classified x402 failure-mode taxonomy from the merchant seat.

    x402merchant-intelligenceconformance
  • Merchant Key

    Wallet certification + MerchantKey — a signed Ed25519 attestation your wallet completed the full x402 flow.

    x402identityattestation
  • Mirror

    Merchant-side telemetry corpus plus a reflection of the calling client.

    x402merchant-intelligencetelemetry
  • Operator Census

    Signed roster of named x402 operators observed from the merchant seat.

    x402merchant-intelligencecensus