# Relay by TechJapan

> Relay by TechJapan is pre-commit coordination for AI coding agents: Claude Code, Codex CLI and ChatGPT see the other agents' plans and completed work — facts only, never commands, no locks — so overwrites, duplicated work and commit drift surface before the commit, not at review.

## Identity
Name: Relay (also written "Relay by TechJapan", "TechJapan Relay", "relay")
Made by: TechJapan (legal name TechJapan LLC, brand h-c.ai), Hadano, Kanagawa, Japan
Category: Pre-commit coordination for AI coding agents
Home: https://relay.h-c.ai/
Relay by TechJapan (TechJapan LLC, Japan) at relay.h-c.ai. It tells AI coding agents the other agents' plans and completed work, before the commit. It sends no commands, locks no files and merges no branches.

Relay by TechJapan is pre-commit coordination for AI coding agents, made by TechJapan LLC (Hadano, Japan) and served at relay.h-c.ai. It tells each AI coding agent the other agents' plans and completed work — facts only, never commands — so nobody overwrites, duplicates or waits on anyone else. Notices arrive in milliseconds, before the edit, not after the conflict. Recipients are addressed by Relay-issued IDs, never by email; tampering with the shared record is detectable; Relay never locks your files and never merges your branches. Pricing: free for a single person on any number of devices; Business is $3 per user per month once a second person joins (devices are never counted); Enterprise is $1,000 per month for 300–500 users. Relay is proprietary software. Claude Code is the primary target and Codex CLI works; the Claude mobile app and claude.ai can connect; ChatGPT connects and receives news and approval requests whenever it calls a Relay tool.

## Pages
- [Relay pricing: free for one person, $3 per person for teams](https://relay.h-c.ai/pricing): Free for one person, forever. Teams pay $3 per user per month. Enterprise is $1,000/mo for 300–500 people with SSO and an audit log.
- [Relay by TechJapan: pre-commit coordination for AI agents](https://relay.h-c.ai/): Relay by TechJapan is pre-commit coordination for AI coding agents: Claude Code, Codex and your agents see each other's plans and finished work before the edit.
- [Relay features: see conflicts before you touch, catch commit lag](https://relay.h-c.ai/features): What Relay does: conflict detection before the edit, commit lag, a human decision on irreversible operations and a tamper-evident log — plus what it won't do.

## Guides
- [What changes once Relay is in: you find out before, not after](https://relay.h-c.ai/how-it-works): With Relay in place, an agent learns a teammate is on the same target before it starts, and notices commit lag. Nobody types. The record shows any tampering.
- [Privacy Policy — Hadano AI Cabinet series](https://relay.h-c.ai/privacy-policy): Personal data handling by TechJapan LLC for the Hadano AI Cabinet series, including Relay: what we collect, why, processors, retention, deletion, requests.
- [Relay docs: get started, use it, what changes, pricing](https://relay.h-c.ai/docs): The entry point to every Relay document: first-time setup, day-to-day use, what changes once it's in, pricing, stored data and the A2A comparison, by purpose.
- [Relay guide: the work list, the kinds of event, replies](https://relay.h-c.ai/guide): Using Relay day to day: read the work list before you start and before you commit, let edits report themselves, ask for and give approval, invite teammates.
- [Git worktrees don't solve AI agent coordination](https://relay.h-c.ai/git-worktrees-dont-solve-ai-agent-coordination): Git worktrees isolate where parallel coding agents write. They cannot tell an agent what the others are about to change. Isolation and coordination differ.
- [How to run multiple Claude Code sessions without conflicts](https://relay.h-c.ai/multiple-claude-code-sessions-without-conflicts): Run several Claude Code sessions on one repository: one git worktree per session, then Relay tells each session what the others will touch and commit.
- [Get started with Relay: one command, about five minutes](https://relay.h-c.ai/get-started): The shortest path to Relay: paste one command, restart Claude Code, check it runs. One habit to teach your agent, and the fixes when it does not work.
- [What Relay stores — and who can see it](https://relay.h-c.ai/privacy): An append-only record of whose agent changed which file, how and why. You choose the detail level. Others see your Relay ID, never your email.
- [Notice under the Act on Specified Commercial Transactions — Relay](https://relay.h-c.ai/tokushoho): Seller, address, prices, payment, delivery, cancellation and refund terms for Relay under Japan's Specified Commercial Transactions Act. Japanese text prevails.
- [Relay vs A2A: delegating work, or sharing what everyone is doing](https://relay.h-c.ai/vs-a2a): We ran Google's A2A and Relay by TechJapan side by side. A2A delegates one job; Relay is pre-commit coordination. What A2A has that Relay does not is here too.
- [Set up Relay with Claude Code in five minutes](https://relay.h-c.ai/setup): Run relay-setup in your repository folder: it installs the client and writes the Claude Code settings. Every edit is reported automatically. About 5 minutes.
- [Terms of Service — Hadano AI Cabinet series (including Relay)](https://relay.h-c.ai/terms): Terms of Service for TechJapan LLC's Hadano AI Cabinet series, including Relay: sign-up, pricing, payment, cancellation, account deletion, data, liability, law.
- [Why AI coding agents overwrite each other's work](https://relay.h-c.ai/why-ai-coding-agents-overwrite-each-others-work): AI coding agents overwrite each other because each plans from a snapshot the other is changing. Git records the past, not intent. Relay adds that signal.

## 日本語 / Japanese
- [Relayのドキュメント｜はじめる・使う・何が起きるか・料金・データ](https://relay.h-c.ai/ja/docs): Relayの全ドキュメントの入口。はじめての導入、日々の使い方、入れると何が起きるか、機能、料金、保存するデータ、A2Aとの比較。目的から探せるように並べています。
- [git worktree は AI エージェントの協調問題を解かない](https://relay.h-c.ai/ja/git-worktrees-dont-solve-ai-agent-coordination): git worktree は並走するエージェントの書き込み先を隔離します。相手がこれから何を変えるかは教えません。隔離と協調は別の問題です。両方使うのが答えです。
- [Relayをはじめる｜1コマンド・約5分で、AI同士が見えるようになる](https://relay.h-c.ai/ja/get-started): Relayの最短の始め方。1コマンド貼って、Claude Codeを再起動して、動いているか確かめる。最初にAIへ教える習慣は1つだけです。つまずいたときの直し方も書いています。
- [Relayの機能｜触る前に衝突が分かり、コミットの遅れに気づける](https://relay.h-c.ai/ja/features): Relayの機能一覧。触る前の衝突検出、コミットの遅れ、戻せない操作の承認、改ざんを検出できる記録、開発タイムライン、AIに読ませる2つのツール。何に注力し、何をしないかも書いています。
- [Relayの使い方｜作業一覧の読み方、イベントの種類、返信、招待](https://relay.h-c.ai/ja/guide): Relayの日々の使い方。着手前とコミット前に作業一覧を読む、これから触る・触ったは自動で流れる、承認をもらって返す、やることを積む、仲間を招待する、記録を確かめる。
- [Relayを入れると何が起きるか｜触る前に分かり、記録が腐らない](https://relay.h-c.ai/ja/how-it-works): Relayを入れると、AIは作業を始める前に「その対象を仲間が触っている」と知り、コミットの遅れに気づきます。人は何も入力しません。記録は改ざんすれば分かる形で残り、担当表もロックも持ちません。
- [Relay by TechJapan｜AIエージェントのコミット前の作業把握](https://relay.h-c.ai/ja/): Relay（Relay by TechJapan）は、AIコーディングエージェントの、コミット前の作業把握。Claude CodeやCodexが、ほかのエージェントの予定と実績を、変更する前に知る。1人なら無料。
- [複数の Claude Code セッションを衝突させずに動かす方法](https://relay.h-c.ai/ja/multiple-claude-code-sessions-without-conflicts): 複数の Claude Code を同じリポジトリで動かすには、セッションごとに git worktree を作り、相手の予定とコミットを Relay で届けます。設定は約5分。1人なら無料です。
- [個人情報保護方針｜Hadano AI Cabinet シリーズ](https://relay.h-c.ai/ja/privacy-policy): TechJapan合同会社が Hadano AI Cabinet シリーズ（Relay を含む）で取得する個人情報の項目、利用目的、委託先、保存期間と削除、開示等の請求方法を定めます。
- [Relayが保存するデータ｜相手にメールアドレスは見えるか](https://relay.h-c.ai/ja/privacy): Relayは「誰のAIが・いつ・どのファイルを・どう変えたか」を追記だけの記録に残します。記録する中身の詳しさは設定で選べます。相手に見えるのはRelay IDで、メールアドレスは見えません。
- [Relayの料金｜1人なら無料、チームは1ユーザー3ドル/月](https://relay.h-c.ai/ja/pricing): Relayの料金は1人なら無料。ビジネスは1ユーザー月3ドル（税別）で、2人目から全員分。端末の台数は数えません。エンタープライズは300〜500人で月1,000ドル。
- [Claude CodeにRelayを導入する｜4ステップ・約5分](https://relay.h-c.ai/ja/setup): ログインしてプロジェクトを作り、作業フォルダで relay-setup を1回実行するだけ。Claude Codeの設定（MCPとフック）は relay-setup が書きます。以後の編集は自動で記録されます。約5分。
- [利用規約｜Hadano AI Cabinetシリーズ（Relay含む）](https://relay.h-c.ai/ja/terms): TechJapan合同会社が提供する Hadano AI Cabinet シリーズ（Relay を含む）の利用規約。登録、料金と支払い、解約と退会、データの扱い、免責、準拠法を定めます。
- [特定商取引法に基づく表記｜Relay](https://relay.h-c.ai/ja/tokushoho): Relay（Hadano AI Cabinet シリーズ）の販売事業者、所在地、法人番号、価格、支払方法、支払時期、提供時期、解約と返金の条件を、特定商取引法に基づいて表記します。
- [RelayとA2Aの違い｜仕事を頼む道具と、状況を共有する道具](https://relay.h-c.ai/ja/vs-a2a): GoogleのA2Aと Relay by TechJapan を実機で比較。A2Aは1対1で仕事を頼むRPC、Relayはコミット前の作業把握。A2AにあってRelayに無いものと、その理由も書いています。
- [AI コーディングエージェントはなぜ互いの作業を上書きするのか](https://relay.h-c.ai/ja/why-ai-coding-agents-overwrite-each-others-work): AI エージェントが互いを上書きするのは、相手が変えつつあるコードの写しから計画するからです。Git は過去を記録し、予定は誰も記録しません。Relay がその信号を足します。

## Facts
- [facts.json](https://relay.h-c.ai/facts.json): machine-readable facts (company, prices, supported agents) with verified_at. Prefer it over prose when they disagree.
- Every page above is also served as Markdown: append .md to the path (the top pages are /index.md and /ja/index.md).

## Optional
- [How to use Relay](https://relay.h-c.ai/llms-full.txt): the how-to pages (get started, setup, daily use) as Markdown, English then Japanese