What is aseprite-mcp AGENTS.md?

Repository instructions for maintaining aseprite-mcp, a TypeScript server that lets AI clients control Aseprite, a pixel-art editor, through 76 tools. The instructions describe its commands, architecture, data flow, and coding rules.

Use them when installing, building, testing, type-checking, debugging, or extending aseprite-mcp and its Lua-script and Aseprite command-line integration.

They give coding agents the project-specific context needed to change the code without breaking its build, tests, tool flow, or Aseprite integration.

How letsagents/aseprite-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to letsagents/aseprite-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.

Copy the file

curl -O https://raw.githubusercontent.com/letsagents/aseprite-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/letsagents/aseprite-mcp

Made for: Codex, OpenCode.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/letsagents/aseprite-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/letsagents/aseprite-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/letsagents/aseprite-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/letsagents/aseprite-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/letsagents/aseprite-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/letsagents/aseprite-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,031 This file is loaded in full into every session.

When invoked 3,031 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.03031	$0.03031
Opus 5.5	$0.01212	$0.01212
Sonnet 5.5	$0.00606	$0.00606
Haiku 4.5	$0.00303	$0.00303

Measured 2mo ago against content hash 55f831a990f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aseprite-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.

AGENTS.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — 跨工具项目指令（给 AI 助手）

本项目是 aseprite-mcp：一个用 TypeScript 编写的 Aseprite MCP（Model Context Protocol）server。它把 Aseprite 以 76 个工具的形式暴露给 LLM 客户端，通过生成 Lua 脚本 + headless 调用 Aseprite -b --script 来驱动 Aseprite。你（AI 助手）在这个项目里改代码时，遵守本文件。

本文件是跨工具指令（Codex / Cursor / Copilot / Gemini 等共用同一份）；Claude Code 经 CLAUDE.md 的 @AGENTS.md import 读到全文。本文件给后续 AI（或人）在本仓库内开发、维护、扩展时作指引：架构约定 + 红线 + 速查，不是教程。

常用命令

npm install            # 安装依赖
npm run build          # tsc -p tsconfig.build.json → dist/（不含测试）
npm run dev            # tsx src/index.ts 直接运行（无需先 build）
npm start              # node dist/index.js 运行编译产物
npm test               # node:test 跑全部 *.test.ts
npm run typecheck      # tsc --noEmit 全量类型检查

若自动探测（--aseprite-path > env ASEPRITE_PATH > PATH 搜索 > Windows 默认位置，见 src/aseprite/path.ts）找不到 Aseprite，需显式指定：

ASEPRITE_PATH="/path/to/your/Aseprite.exe" npm start

架构与数据流

一次工具调用的完整链路：

MCP 客户端请求
  → SDK 高阶 API（McpServer，zod 校验参数）
  → tools/<域>.ts 的 handler
  → lua/emit/<域>.ts 生成 Lua 字符串（纯函数，不碰 IO）
  → Ctx.run(lua)
  → aseprite/cli.ts 的 AsepriteRunner：写临时 .lua → spawn Aseprite -b --script → 收 stdout
  → classify（按 stdout 末尾 __SCRIPT_OK__/__SCRIPT_ERROR__ 标记清洗成 RunOutcome）
  → handler 把 RunOutcome 包成 ToolOutcome { isError, text }
  → SDK 回 MCP 响应

分层（依赖严格单向，自底向上）：

层	文件	职责
核心	`error.ts` `runner.ts` `context.ts`	错误类型、`LuaRunner` 接口、`Ctx`（runner + verbose）
桥接	`aseprite/path.ts` `aseprite/cli.ts`	Aseprite 定位、spawn + xpcall wrapper + classify
Lua 工具	`lua/color.ts` `lua/escape.ts`	hex 解析、Lua 字符串转义
Lua 生成	`lua/emit/*.ts`（+ `shared.ts`）	每个工具一段 Lua 代码生成（纯字符串拼接）
工具注册	`tools/*.ts`（+ `shared.ts` `index.ts`）	zod schema + handler + register
接线	`server.ts` `index.ts`	装配 McpServer（工具 + resource + prompt）、CLI、stdio

关键约定（改代码前必读）

工具的三段式结构

tools/ 下每个域文件对每个工具导出三样（命名 <toolName> 用 snake_case 工具名转 camelCase，如 draw_circle → drawCircle）：

Read the full file on GitHub · 138 lines

Changes

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 · 138 lines · 3,031 tokens per session scan A 55f831a990f3

Subscribe to this mod's changes

aseprite-mcp AGENTS.md is an instructions file published in the GitHub repository letsagents/aseprite-mcp (0 stars, last pushed 3mo ago), licensed MIT. It adds 3,031 tokens to every session, about $0.0121 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.

aseprite aseprite-mcp mcp

aseprite-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
aseprite-mcp AGENTS.mdletsagents/aseprite-mcp	Instructions file	0	3mo ago	MIT	A	3,031	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	5,685	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	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

aseprite-mcp: Instructions file for Codex