An open-source competition platform for local and AWS cloud hosting. Teams solve problems and share scores and progress. The current version supports local Compose exercises and cloud hello-world / Cryptography Battle.
Start with a local competition. Local hosting uses SQLite and needs no AWS account. Check the organizer guide for cloud capabilities and costs.
Learn what TenkaCloud is — by playing it. An introductory browser demo of the earlier interface. Authentication, scores and operations differ from a real event. Use the documentation for current hosting instructions. Start with this quest →▶ Watch the 30-second tour · Hosting an event? Hosting guide → · Get a Hosted Event quote →
Operated by BULL LLC · Apache 2.0
3 problems are deployed. Open the problem list to start.
Battles share a live match; Challenges score problem-solving. The screens below show the earlier interface. Check the organizer guide for currently supported problems.
Cryptography Battle keeps shared match state and scores player actions. AWS endpoint-uptime Battles remain part of the cloud restoration work.
| Occurred | Problem | Type | Delta |
|---|---|---|---|
| Seconds ago | microservice-migration-battle |
Battle (uptime) | -100 pt |
| 1 min ago | hello-world |
Challenge (flag) | +800 pt |
Solve a problem and submit its specified answer or checkpoints. Local Compose exercises can also be used in team competitions.
microservice-migration-battle
Battle
Difficulty: intermediate
In progress
hello-world
Challenge
Difficulty: intro
Unanswered
hello-world-battle
Battle
Difficulty: intermediate
In progress
For Cloud Enablement (CCoE), Platform / SRE, and Security teams that need hands-on AWS training — without rebuilding the event platform. Environment provisioning, login, scoring, and progress tracking — all in one screen.
New-grad onboarding, internalization programs, cross-team AWS drills — run them multiple times a year on the same platform. Move from one-off workshops to a planned annual program.
Talk to us ›Manage events, teams, problems and scores in shared consoles. The current cloud hello-world exercise uses scoped CLI access. Check implementation status for Console access and other exercises.
Operator guide ›An open-source platform for learning through competitions. Communities and schools can host locally; AWS exercises use cloud hosting. The OSS license is free; cloud resources are billed separately.
Author a problem ›Review platform and competitor-account permissions before starting. The current CLI and the pipeline pinned to an earlier release are separate deployment paths.
Check the AWS account, region and required permissions, then follow the organizer guide for make deploy.
For AWS exercises, prepare the competitor bootstrap and verify its registered role and ExternalId.
Create the event and teams, prepare supported problems and start the competition. Participants start local Docker exercises when needed.
microservice-migration-battle
c7782015332hello-world
677c9285832hello-world-battle
677c9285832Canonical problem content lives in TenkaCloudChallenge. Follow the authoring guide to define and verify the runtime and scoring for each format. Problem Pack validation and installation remain available; activation into the current event catalog and drill integration are incomplete.
Paste the prompt below into Claude Code or Codex and the agent will explain TenkaCloud and guide you through playing or hosting. It reads the LLM briefing llms-full.txt.
Fetch https://tenkacloud.com/llms-full.txt and read it — it is the canonical AI-agent briefing for TenkaCloud. If you cannot fetch URLs, ask me to paste its contents instead. Then, in my language: (1) explain what TenkaCloud is in about five sentences, (2) ask whether I want to PLAY (no AWS account needed) or HOST my own event on AWS, and (3) guide me step by step through the matching quick start from the briefing, stating costs and teardown before anything touches a real AWS account.
Build a local Challenge, an AWS Challenge, and an AWS Battle in increasing order of difficulty, then run them as a competition several teams can play. It is written around TenkaCloud, but reading it needs neither an AWS account nor a TenkaCloud install. Available in English and Japanese.
The OSS platform stays free under Apache 2.0. For organizations that want setup, live operations, or a program run for them, we offer three productized packages. Each has a fixed shape — scope, deliverables, exclusions, delivery model.
A 1-day cloud drill on the public OSS catalog, run by us. Event design, deploy into your AWS account, dry run, live facilitation, post-event report. Per-event fixed price.
An annual contract of 4 operated events per year for one org: learning paths curated from the public problem catalog (beginner → advanced). Original problem development is not included in this package.
A monthly retainer for operating-model / training-roadmap work. Never bundled into the two offerings above, so events stay productized. If you want both, that is two line items.
The platform’s OSS license is free. AWS usage and retained storage can incur separate charges. Service fees for setup and event operations are listed below.
For first-time hosts who want to validate the operated experience at a small scale.
* You bring your own AWS account.
Discuss publicly on GitHub →We handle setup, run the day, and tear down — one full event, operated.
* You bring your own AWS account. If we need to provide one, we'll quote separately.
Discuss publicly on GitHub →For organizations that want to run 4 events per year on the same platform — new-grad onboarding, CCoE programs, or platform enablement.
* Quoted by scope and scale. You bring your own AWS account.
Discuss publicly on GitHub →Custom problem authoring follows the same scope as regular software development (requirements → implementation), so we quote it separately. Get in touch for that and for anything beyond these tiers.
Cloud enablement programs, internal onboarding, recurring AWS drills — share your scale, cadence, and audience, and we'll figure out the right setup together.
If you are considering TenkaCloud for enterprise or internal training use, please feel free to contact us. TenkaCloud is open source, but we would love to learn more about real-world training needs, custom exercise requirements, and how organizations want to run hands-on operations/security drills.