Borrowing it
Nothing to install: this file belongs to regaing/devbelt-mcp. 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/regaing/devbelt-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/regaing/devbelt-mcpWrote 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/regaing/devbelt-mcp/agents-md)<a href="https://agentmods.dev/instructions/regaing/devbelt-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/regaing/devbelt-mcp/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/regaing/devbelt-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/regaing/devbelt-mcp/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 | $0.00470 | $0.00470 |
| Opus 5.5 | $0.00188 | $0.00188 |
| Sonnet 5.5 | $0.00094 | $0.00094 |
| Haiku 4.5 | $0.00047 | $0.00047 |
Grade A, and why
devbelt-mcp 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 2mo 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.
What it actually says
About This Project
灵犀会自动参考本文件中的说明来协助开发。
仓库结构
- 根目录即主项目 — AI 工具 MCP server（包名
@lingxi-agent/devbelt-mcp），TypeScript + Node.js ≥18， 提供 77 个在线工具（编码/加解密/代码格式化/JSON/文本/单位换算/网络查询/二维码等），零数据库。src/tools/按功能族组织（encode/crypto/code/json/data/text/unit/net/misc/time）src/lib/units.ts单位换算常量表test/tools.test.ts97 个端到端测试- 开发命令：
npm run build（tsc）、npm test（vitest）、npm run dev（tsx） - 产物：
dist/index.js（stdio server）
开发约定
- 所有 MCP 工具用
server.tool(name, desc, schema, guard(callback))注册， 回调统一用guard()包装（异常自动转可读错误文本，不抛堆栈） - 工具命名
<族>_<动作>（如crypto_hash、unit_convert），参数枚举用 zod + describe 写清可选值 - 对称加密走现代标准（node:crypto AES-GCM/CBC）
- 新增工具必须补测试（test/tools.test.ts，端到端 InMemoryTransport 方式）
- 外部接口（工信部 ICP 等）变动时降级为可读错误，不抛裸异常
技术栈
TypeScript（ESM, NodeNext）/ @modelcontextprotocol/sdk / zod / vitest / prettier / sql-formatter / ws / qrcode / bwip-js / opencc-js / pinyin-pro / xlsx / js-yaml / marked / turndown / diff / iconv-lite / javascript-obfuscator / lunar-typescript / cron-parser / jsonpath-plus / mathjs / bcryptjs / ajv / jschardet / jsqr / pngjs
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.
- 2mo ago First seen · 28 lines · 470 tokens per session scan A 9890abae6cc4
devbelt-mcp AGENTS.md is an instructions file published in the GitHub repository regaing/devbelt-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 470 tokens to every session, about $0.0019 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 2026-08-31.
devbelt-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| devbelt-mcp AGENTS.mdregaing/devbelt-mcp | Instructions file | 1 | 2mo ago | MIT | A | 470 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,649 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |