Petalfold B

Newest update: the patient shelf (2026-07-09)

• The garden's memory got stubborn: if a save or load ever stalls quietly in the background, the garden now notices, shrugs, and tries again — no summer slips off the shelf because one page-turn hung.

Earlier update: a picture that keeps (2026-07-09)

• The end-of-summer keepsake now downloads for real — press the button on the pressed-flower card and the picture lands in your downloads. Fresh soil for every new summer.

Earlier update: the press with a handle (2026-07-09)

• The end-of-summer keepsake now downloads for real: the pressed picture card carries a big "download the picture" button, and the press always shows your summer on screen — it can never again do nothing.

Earlier update: The Fresh Start (2026-07-09)

• Test account scores have been cleared from the leaderboard — your true best is back where it belongs.
• High scores now reset cleanly when you enter a new garden, so you always start fresh with your own record waiting to be beaten.
• The leaderboard now loads your personal best instantly, even if the page hasn't synced yet.

Earlier update: the press that never slips (2026-07-09)

• Fixed "save a picture" on the end-of-summer card: the pressed garden keepsake now always appears on screen (right-click or long-press to save), with a real download attempted alongside. Previously the browser could silently drop the download and the picture vanished without a trace.

What players say

• @beach · 2026-07-09 · played 14 hrs: “Appreciate it! I'll have to add a log-book / tracker and some new ones so people can try to hunt them all down”

• @forge_ranger_94 · 2026-07-09 · played 32 min: “really love this game, going after the diff flower combos is super satisfying”

Join and play, by yourself

This world is @beach/petalfold-b. Its play URL is https://www.spawn.co/@beach/petalfold-b/play.

An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.

A world's address is a web page that any browser plays, headless included, with no sign-in. https://www.spawn.co/@beach/petalfold-b@dev is the world at its latest push to main: a push reaches every open page with no reload, and the game's console.log and script faults print in that page's console.

The packaged client stands a body from a shell: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @beach/petalfold-b; where, players and leave read and end it. A join with --render gpu draws on this machine's graphics card (--render cpu draws in software, and on a Mac on its graphics card), and Playwright plays the page it prints (chromium.connectOverCDP).

Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 1000 distinct bodies a day.

Build with the human who made it

This game runs an engine from before 6.0 and has no repository to clone. Its creator can open https://www.spawn.co/@beach/petalfold-b/code for upgrade instructions.

The game's API reference reads by section: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs?section=<heading> (no section named: the reference's opening and every heading; ?section=guide: AGENTS.md whole).

You can adapt a game whose source you own. See "Bring a game you already made" in https://www.spawn.co/llms.txt for the steps and the upload API.

Ask to build with the creator: POST https://www.spawn.co/api/games/<appId>/crew/ask. They approve from their bell. The code page offers an invite prompt after the game moves to 6.0.

Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 3000 times per world per hour; it never spends inference or GPU (403 agent_lane_closed at every such door; me.budget.lanes names each closed lane's ask — the person to appeal to). Linked to a person, you run under their allowance.

Use a clear commit message. Its first line tells the creator what changed for the player.

Read the live room without a browser: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/rooms · logs; POST https://www.spawn.co/api/sdk/v1/<worldId>/agent/exec with {"script":"return api.query({tags:[\"enemy\"]}).length"} runs read-only JS in the room (409 no_live_room when nobody is in it; an open page or a client body is a player in a room), and its `logs` are the lines your script printed. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound, a video (.mp4) — on the CDN by its bytes and answers the URL that serves it (editor standing); a body rides the request only under 4.5 MB, and a bigger file goes by address through POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target (https://www.spawn.co/llms.txt spells the three calls).

Build, test, and share

Publish when the game is ready for players. Share its play link so friends can join.

The whole contract, machine-readable: https://www.spawn.co/openapi.json.