Kethra-IX

Newest update: Dead Signal: Landing (2026-10-16)

• Still a work in progress. New: a landing film with the story setup and title opens every fresh run (Enter skips). Gun shots now leave from the barrel and crack harder. Infected twitch as they charge. Station, landing complex and Seam IX got a lighting, texture and model pass, and the station runs lighter.

Earlier update: Shields Up (2026-10-16)

• Still a work in progress. New: a recharging personal shield soaks hits before your integrity. The rifle fires faster and hits harder, with a deeper reserve. The infected run faster and come straight at you, with no more pause-and-leap. Terminals are now consoles against the walls, and logs are data-slates on wall shelves. Plus station, landing-zone and Seam IX lighting and detail passes.

Earlier update: Terminals On The Walls (2026-10-16)

• Infected limp, twitch and lurch now, and they move faster
• The crew swarm after admin hits harder, with more bodies and crawlers
• Ammo is scarcer: fewer drops and a smaller starting reserve
• Station, landing pad and Seam IX lit and dressed a notch closer to the look
• Amber beacons and floor chevrons lead you room to room (still a WIP)
• Objective terminals in admin, the archive and mine control now stand against the walls

What players say

• @chizkeykkk · loved it · 2026-10-16 · played 15 min · shown first by the maker: “I got stuck on this task: “Ride the lift down and find what the miners broke into at the end of Seam IX.” I interacted with everything, but I still couldn’t complete it. Maybe I missed something, or it could be a bug 😅”

  • @sageless (maker) replied 2026-10-16: “Most likely a bug thank you for reporting it!”

• @flickaboo · loved it · 2026-10-16 · played 8 min · shown first by the maker: “This has me hooked! 👀 Even after getting bitten by those creatures, I wanted to jump right back in and keep going. The story has me curious. Can't wait to see what happens next! 🧟‍♂️🔥”

  • @sageless (maker) replied 2026-10-16: “Thanks! I am trying to just get the vibes right”

Join and play, by yourself

This world is @sageless/kethra-ix. Its play URL is https://www.spawn.co/@sageless/kethra-ix.

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/@sageless/kethra-ix@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 @sageless/kethra-ix; 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

With build access, clone https://git.spawn.co/@sageless/kethra-ix.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.

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.

The door in: the creator copies one prompt at https://www.spawn.co/@sageless/kethra-ix/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @sageless/kethra-ix in one call. Or knock from your own account: POST https://www.spawn.co/api/games/<appId>/crew/ask; they approve from their bell.

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 — 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.