Borrowing it
Nothing to install: this file belongs to nexus-research-lab/nexus. 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/nexus-research-lab/nexus/main/AGENTS.mdgit clone --depth 1 https://github.com/nexus-research-lab/nexusWrote 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/nexus-research-lab/nexus/agents-md)<a href="https://agentmods.dev/instructions/nexus-research-lab/nexus/agents-md"><img src="https://agentmods.dev/badge/instructions/nexus-research-lab/nexus/agents-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/nexus-research-lab/nexus/agents-md"><img src="https://agentmods.dev/badge/instructions/nexus-research-lab/nexus/agents-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 | $0.02746 | $0.02746 |
| Opus 5.5 | $0.01098 | $0.01098 |
| Sonnet 5.5 | $0.00549 | $0.00549 |
| Haiku 4.5 | $0.00275 | $0.00275 |
Grade A, and why
nexus AGENTS.md scanned grade A with 0 findings 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 5d ago.
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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
nexus — 用户运行的多 agent 桌面/网页应用；Go 后端 + React web。
技术栈：Go + net/http + WebSocket + SQLite/goose + React19 + Vite + Zustand。
本文件只保存项目宪法：构建门禁、文档分层、依赖方向与工程原则。产品合同一律写在 docs/specs/，见文末索引；不得在本文件追加产品行为细节。
Build & Validation Commands
make dev：同时启动同级 Nexus Control（8020）、Go 后端（8010）和前端（3000）make check-architecture：检查生产导入方向与 textutil 私有副本；集成测试可继续通过 app 装配。make check-go：默认 Go 门禁，只检查相对上游及当前工作树中发生变化的 Go 包make check-go-fresh：对上述变化包禁用测试结果缓存make check-go-full：显式运行 Go 全量 vet 与无缓存测试，仅用于发布、跨包基础设施变更或用户明确要求make check：运行增量 Go 门禁、前端 lint、前端时间线行为测试、前端 typecheckmake check-backend：Go 后端增量校验，等价于make check-gomake check-normalization：拒绝对已被证明裁剪过的值再调用strings.TrimSpace（linux/darwin/windows 取交集，约 1 分钟），已并入make check-go-fullmake install：执行go mod tidy并安装前端依赖NEXUS_SANDBOX_TEST_BINARY=/absolute/nxs make check-desktop-sandbox：显式桌面沙箱基线；macOS/Windows 原生验收入口与必测项见docs/testing/desktop-sandbox-acceptance.md与docs/specs/desktop-sandbox-spec.md。
日常修改先跑目标包测试或 make check-go。Agent 不得默认执行 go test ./... 或 make check-go-full；只有发布、共享协议/基础设施变更、增量范围无法可靠判断，或用户明确要求全量时才执行。
Commit Style
Use English commit messages with an emoji prefix, for example :sparkles: Switch to the Go default runtime path. Keep user-visible changes reflected in CHANGELOG.md.
L1 — 文档地图
代码是机器相，注释是语义相，两相必须同构：任一相变化必须在另一相显现，否则视为未完成。
本仓采用三层分形文档：L1（本文件，项目宪法）→ L2（各 Go 包 doc.go 的 L2 头，成员清单 + 暴露接口）→ L3（业务文件顶部 INPUT/OUTPUT/POS 契约）。跨包产品语义只在 docs/specs/ 保留一份当前规范；internal/protocol 类型、nexus.command MCP schema 与 parser 是线格式真相，Skill 只说明模型决策，API Reference 只说明 transport。未来方案、交付计划和未实现字段必须明确标为 non-normative，不能混入当前规范或由多份文档重复定义。
<directory>
cmd/ - 可执行入口：nexus-server（单个 main.go 装配服务、自动迁移与 runtime 检查；平台实例锁由 infra/desktopinstance 装配）、nexusctl 资源 CLI、nexuscfg 配置 CLI、Linux runtime launcher
web/ - React 前端（features / store / shared / lib，见 web/AGENTS.md）
desktop/ - macOS AppKit/WKWebView、Windows WPF/WebView2 宿主与 Chromium browser-extension
skills/ - 随产品发布的平台内置 Skill（每个目录自含 SKILL.md、元数据、脚本与参考资料）
internal/ - 后端核心（各子包 L2 见其 doc.go）:
protocol/ - 跨 HTTP/WS/前端/运行时的协议真相源与 TS codegen 输入
runtime/ - nxs/Claude Code 共用宿主主链：bridge client、manager 生命周期、workspace isolation Hook、桌面沙箱资源
service/ - 业务服务；service/room 只持久化 Room，实时编排在 service/room/realtime；DM 与 Room realtime 共用的宿主依赖和阶段在 service/runtimehost
chat/ - 对话领域（dm / room）
handler/ - HTTP / WebSocket 处理器；team 是浏览器到可选多人服务的认证 gateway
relay/ - Relay 独立跨仓合同；service/relay 是客户端，service/team 负责本机节点登记与执行；handler/team 直连 Relay
message/ - runtime/SDK 消息 → Nexus 事件与 assistant 快照的投影
echo/ automation/ - 主动跟进与定时任务领域模型
mcp/ - 宿主自有工具统一挂在单一 `nexus` MCP server；`nexus.command` 承载 Goal/Execution/Automation/Subagent
cli/ - nexusctl / nexuscfg 本地命令行装配；模型侧命令不经过 CLI
app/ - HTTP 与 CLI 共用的显式服务装配、资源所有权与进程生命周期
config/ storage/ infra/ migration/ version/ - 装配、持久化、基础设施与版本化迁移；infra/textutil 是只依赖标准库的字符串原语叶子包
docs/ - README.md 是索引；guides/ 面向用户与作者，operations/ 面向运维，testing/ 保存回归清单；验收证据留在本地或 CI artifact，不进入公开仓库，specs/ 保存当前维护者合同，explorations/ 保存 non-normative 在研专题
</directory>
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.
- 5d ago Changed · +11 tokens per session 7601c28a205e
- 16d ago Changed · -43 lines · -9,705 tokens per session 909c6785d087
- 17d ago Changed · +28 tokens per session 3dbe07b9efa1
- 25d ago Changed · -25 lines · -355 tokens per session 7c12de299dfc
- 27d ago Changed · +35 tokens per session 8c4752304cee
- 28d ago Changed · +121 tokens per session 471c8e17d5bd
- 29d ago Changed · +11 lines · +435 tokens per session beab4a494d78
- 1mo ago Changed · +2 lines · +99 tokens per session 8747234ac1d8
- 1mo ago Changed · +6 lines · +215 tokens per session 2ef80314dd1e
- 1mo ago First seen · 160 lines · 11,862 tokens per session scan A 34638390bd66
nexus AGENTS.md is an instructions file published in the GitHub repository nexus-research-lab/nexus (154 stars, last pushed 2d ago), licensed Apache-2.0. It adds 2,746 tokens to every session, about $0.0110 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.