Borrowing it
Nothing to install: this file belongs to zhu-xiaowei/Baton. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/zhu-xiaowei/Baton/main/CLAUDE.mdgit clone --depth 1 https://github.com/zhu-xiaowei/BatonWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/zhu-xiaowei/baton/claude-md)<a href="https://agentmods.dev/instructions/zhu-xiaowei/baton/claude-md"><img src="https://agentmods.dev/badge/instructions/zhu-xiaowei/baton/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/zhu-xiaowei/baton/claude-md"><img src="https://agentmods.dev/badge/instructions/zhu-xiaowei/baton/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.13324 | $0.13324 |
| Opus 5.5 | $0.05330 | $0.05330 |
| Sonnet 5.5 | $0.02665 | $0.02665 |
| Haiku 4.5 | $0.01332 | $0.01332 |
Grade A, and why
Baton CLAUDE.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **Video** (`.mp4/.m4v/.mov/.webm/.mkv/.avi`, ≤5GB): base64-through-Lambda is impossible (API GW 6MB limit), so the bridge **streams the file straight to S3** via a presigned PUT. `POST /video-prepare {key}` → server HE How it starts
The opening of the file, as written. The whole thing — 577 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Baton — Project Context
Workflow Rules
- Plan before code: All code changes must be preceded by a detailed proposal (which files, what changes, why). Only modify code after explicit user confirmation.
- Concise comments: Keep code comments minimal — only what's necessary to understand non-obvious logic. Detailed design/architecture notes belong in CLAUDE.md, not inline.
- Browser regression evidence workflow: For ordering, missing-message, duplicate-message, recovery, or spinner regressions, first enable DevTools Preserve log and export the complete HAR. Copy the untouched HAR locally, extract every WebSocket frame and every messages API response, then replay the exact captured payload through the real frontend test harness until the browser result is reproduced exactly. Only after that may the root cause be reported or business code be changed. Keep HARs and extracted diagnostics local and untracked; never commit API keys or other captured credentials.
What is this
Baton is a cross-platform app + bridge + server that lets you view local agent sessions from your phone or desktop. Claude Code supports viewing and interaction; Codex supports history, real-time monitoring, and interaction with existing Sessions. Three components:
- bridge/ — Node.js script running on macOS/Linux/Windows (always-on, auto-start), normalizes Claude Code and Codex JSONL
- server/ — AWS Lambda (FastAPI) + DynamoDB + WebSocket API GW, relays between bridge and app
- web/ + src-tauri/ — Static HTML/CSS/JS frontend, packaged as native app via Tauri v2 (Android/iOS/Desktop)
Brand name "Baton" is only in user-facing places. Internal code uses generic names so renaming is easy.
Core Design Principle
DynamoDB is the durable browsing cache; WebSocket is the real-time path:
- DDB: device/project/session metadata plus normalized message history
- WS: real-time messages, streaming previews, permissions, and control actions
- App localStorage: local auth/nav state cache
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed · +43 lines · +971 tokens per session c3a744d5bfc4
- yesterday Changed · +11 lines · +281 tokens per session 8154d5f2e911
- 5d ago Changed · +9 lines · +215 tokens per session 3283f7148fa1
- 7d ago Changed · +2 lines · +47 tokens per session edf3c08ecdfb
- 9d ago Changed · +65 tokens per session 397c61962443
- 10d ago Changed · +2 lines · +798 tokens per session 4e136079f7cb
- 14d ago Changed · +16 lines · +184 tokens per session ad667999aa11
- 16d ago Changed · +13 lines · +736 tokens per session eee293f7da9b
- 17d ago Changed · +2 lines · +302 tokens per session 99a6e0b4de93
- 18d ago First seen · 479 lines · 9,725 tokens per session scan A 5a7f17e6250a
Baton CLAUDE.md is an instructions file published in the GitHub repository zhu-xiaowei/Baton (14 stars, last pushed today), licensed MIT. It adds 13,324 tokens to every session, about $0.0533 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.