Borrowing it
Nothing to install: this file belongs to yyu0310/lark-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/yyu0310/lark-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/yyu0310/lark-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/yyu0310/lark-mcp/agents-md)<a href="https://agentmods.dev/instructions/yyu0310/lark-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/yyu0310/lark-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/yyu0310/lark-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/yyu0310/lark-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 | $0.00386 | $0.00386 |
| Opus 5.5 | $0.00154 | $0.00154 |
| Sonnet 5.5 | $0.00077 | $0.00077 |
| Haiku 4.5 | $0.00039 | $0.00039 |
Grade A, and why
lark-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
lark-mcp — Agent Context
An MCP server that wraps lark-cli to expose Lark wiki, docs, and IM search as MCP tools for Claude Desktop App and other MCP-compatible AI assistants.
Project structure
| File | Purpose |
|---|---|
server.js |
MCP server entry point (~100 lines) |
package.json |
Node.js dependencies |
README.md |
English docs |
README.zh-TW.md |
Traditional Chinese docs |
README.zh-CN.md |
Simplified Chinese docs |
Key design decisions
- Zero credentials in config — all Lark API calls route through
lark-cli, which manages its own OAuth token store.server.jsreads no env vars. - execFileSync, no shell: lark-cli runs via
execFileSync('lark-cli', argsArray)so user-controlled fields (space_id / url / query) cannot inject shell commands. Sync calls are simpler and the 30s timeout is sufficient. - Five read-only tools — wiki spaces, wiki nodes, wiki read, doc read, IM search. Write operations are intentionally omitted.
Adding a new tool
- Add an entry to the
ListToolsRequestSchemahandler:{ name, description, inputSchema } - Add a
casetobuildArgs(name, args)returning thelark-cliargv array for that tool. Never string-interpolate user input into a command; each value goes in its own array element.
Auth
lark-cli auth login --domain wiki,docs,drive,im --no-wait --json
lark-cli auth login --device-code <code>
Token valid for 7 days. Re-login when expired.
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 · 34 lines · 386 tokens per session scan A 60af8e2d251a
lark-mcp AGENTS.md is an instructions file published in the GitHub repository yyu0310/lark-mcp (0 stars, last pushed 2mo ago), licensed MIT. It adds 386 tokens to every session, about $0.0015 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.
lark-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| lark-mcp AGENTS.mdyyu0310/lark-mcp | Instructions file | 0 | 2mo ago | MIT | A | 386 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |