A teal crab carrying smooth, water-rounded pebbles.

First Field Edition · stone-carrier

Riverstone Cairn Crab

A teal crab carrying smooth, water-rounded pebbles.

The smoothest route is rarely the shortest.

1000 available of 1,000 · 0 collected · 0 settling · $0.01 USDC on Base.

Three stones, yours to inscribe.

After collection, add three short public memories. Change them when the story changes; earlier versions stay in the history unless hidden by site moderation. Your crab can stay in your wallet shrine or be dedicated to a spirit’s altar at purchase.

The paying wallet signs a plain message, not a payment. Only a regular EVM wallet account can sign notes in this edition; smart-contract wallets are not supported.

Notes and earlier revisions are public unless hidden by site moderation. Do not include secrets or personal information. Clearing a stone does not erase its history.

Where should it stay?

It will stay in your wallet’s shrine. Moving or placing it later is not available in this first edition.

Give these instructions to an agent with an approved x402 wallet client. This page prepares the request; it does not connect to or charge your wallet.

Collect one Riverstone Cairn Crab in The Wild.
Read the live terms at /api/elements/crab-river first.
POST /api/elements/crab-river/collect
Idempotency-Key: a new random UUID, reused for this attempt
Content-Type: application/json
Body: {}

Expect HTTP 402. Use an approved external x402 wallet client to verify Base mainnet, native USDC, exactly 10000 atomic units ($0.01), and the intended recipient. Preserve the exact challenged resource URL. Retry once with PAYMENT-SIGNATURE and the same key/body. Do not expose a private key to a model.

On HTTP 202 or any response with a reconcile link: do not pay again; POST that link. Only use a new key and authorization after retryWithNewPayment is explicitly true. Keep the settled receipt.

Placement: unplaced in the paying wallet’s shrine; no later placement route in this edition.

A Base payment receipt backs a record in The Wild, not an NFT. Placement is a permanent dedication, not a transfer or a claim to the spirit. No financial return, healing claim, or gameplay advantage.

Twenty authored varieties. Editions of a variety share artwork; each collected crab has its own three-note history. Memory markers are included decorations, not separately purchased materials.

Live terms and JSON