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---
name: gpt-image-2-apimart
description: Generate or inspect project image assets through this repository's APIMart OpenAI-compatible gpt-image-2 workflow. Use when Codex needs to create puzzle template sample images, reproduce the server-rs gpt-image-2 request body, dry-run image prompts, batch-generate local project thumbnails, or debug APIMART_BASE_URL / APIMART_API_KEY image-generation configuration without exposing secrets.
---
# gpt-image-2 APIMart
Use this skill for project-local image asset generation that must match the repository's `server-rs` APIMart `gpt-image-2` path.
## Workflow
1. Read the local task and decide whether the image is project-bound.
2. Prefer `scripts/generate-template-samples.mjs` for puzzle template thumbnails or small batches.
3. Run dry-run first:
```powershell
node .codex/skills/gpt-image-2-apimart/scripts/generate-template-samples.mjs --dry-run
```
4. If dry-run looks correct and the user asked for real assets, run live generation with a small limit:
```powershell
node .codex/skills/gpt-image-2-apimart/scripts/generate-template-samples.mjs --live --limit 6
```
5. Save final project assets under `public/` or another explicitly requested workspace path.
6. Never print `APIMART_API_KEY`. Report only whether configuration exists.
## Request Contract
The repository image path uses:
```text
POST {APIMART_BASE_URL}/images/generations
Authorization: Bearer {APIMART_API_KEY}
Content-Type: application/json
```
Default body:
```json
{
"model": "gpt-image-2",
"prompt": "<prompt>",
"n": 1,
"size": "1:1"
}
```
For a reference image, add:
```json
{
"image_urls": ["data:image/png;base64,..."]
}
```
Poll async responses with:
```text
GET {APIMART_BASE_URL}/tasks/{task_id}
```
Accept image output from `data[].url`, `data[].b64_json`, direct nested `url` fields, or async task results.
## Environment
Load environment values from process env first, then `.env.secrets.local`, `.env.local`, and `.env.example`.
Required for live generation:
- `APIMART_BASE_URL`
- `APIMART_API_KEY`
Optional:
- `APIMART_IMAGE_REQUEST_TIMEOUT_MS`
If the key or base URL is missing, stop after dry-run or explain the missing configuration. Do not ask the user to paste the key in chat.
## Prompt Rules
- Use Chinese prompts when generating project puzzle templates.
- Keep template samples square, clear, image-only, and suitable for puzzle thumbnails.
- Avoid text, watermark, UI chrome, buttons, borders, and tutorial overlays.
- Include local negative constraints in the prompt instead of relying on provider-specific negative prompt fields.
## Resources
- `scripts/generate-template-samples.mjs`: dry-run or live-generate puzzle template sample thumbnails.
- `assets/puzzle-template-prompts.json`: default prompt list consumed by the script.

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interface:
display_name: "GPT Image 2 APIMart"
short_description: "Generate project thumbnails through APIMart"
brand_color: "#10B981"
default_prompt: "Use $gpt-image-2-apimart to dry-run or generate puzzle template thumbnails through APIMart."
policy:
allow_implicit_invocation: true

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[
{
"id": "couple-memory",
"title": "情侣合照拼图",
"prompt": "温暖自然光下的一对情侣纪念合照,城市咖啡馆窗边,桌面有花束和两杯热饮,人物神情自然,画面主体清晰,前中后景层次明确,适合切成拼图。"
},
{
"id": "family-keepsake",
"title": "家庭纪念拼图",
"prompt": "三代家人在客厅沙发前的家庭纪念合照,柔和午后阳光,孩子抱着生日蛋糕,长辈微笑,画面温暖完整,细节丰富但不杂乱。"
},
{
"id": "friends-party",
"title": "朋友聚会拼图",
"prompt": "朋友们在露台夜晚聚会,彩灯、桌上零食和举杯瞬间,人物分布有层次,中央焦点清楚,氛围轻松热闹,适合社交分享拼图。"
},
{
"id": "festival-card",
"title": "节日贺卡拼图",
"prompt": "节日餐桌与礼物布置,暖色灯光、彩带、蜡烛和窗外烟花,画面像无字贺卡,主体集中,边角细节可辨,适合节日拼图。"
},
{
"id": "knowledge-summary",
"title": "知识总结拼图",
"prompt": "一张无文字的知识学习主题插画,书桌上有打开的笔记本、便签、咖啡、台灯和思维导图式图形元素,构图整洁,重点明确,适合学习打卡拼图。"
},
{
"id": "product-detail",
"title": "商品细节拼图",
"prompt": "精致商品静物展示,一只高质感香水瓶放在丝绸与花瓣之间,玻璃反光清晰,包装和材质细节丰富,背景干净,适合作为电商细节拼图。"
},
{
"id": "healing-landscape",
"title": "治愈风景拼图",
"prompt": "治愈风景插画,清晨湖边、薄雾、远山、木栈道和一盏小灯,色彩柔和,层次清楚,局部元素可辨,适合长时间拼图。"
},
{
"id": "cute-pet",
"title": "宠物可爱拼图",
"prompt": "一只可爱的橘猫趴在阳光窗台上,旁边有绿植、毛线球和小毯子,猫的表情清楚,画面温柔干净,适合萌宠拼图分享。"
},
{
"id": "hot-topic-poster",
"title": "热点海报拼图",
"prompt": "电影感热点海报风插画,雨夜街头、霓虹反光、奔跑的人影和远处光束,强烈视觉焦点,画面无文字,适合热点话题拼图。"
},
{
"id": "event-invitation",
"title": "活动邀请拼图",
"prompt": "活动邀请主题插画,展厅入口、花艺装置、签到台和柔和灯带,人群剪影自然分布,画面高级干净,无文字,适合活动预热拼图。"
},
{
"id": "daily-challenge",
"title": "每日挑战拼图",
"prompt": "每日挑战主题插画,清爽桌面上摆放相机、明信片、计时器和小奖章,色彩明亮,构图有趣,细节可拆解,适合平台每日拼图。"
},
{
"id": "children-learning",
"title": "儿童认知拼图",
"prompt": "儿童认知学习插画,木质桌面上有积木、彩色形状、动物玩偶和小书本,色彩明快,元素边界清晰,无文字,适合儿童教育拼图。"
}
]

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import { Buffer } from 'node:buffer';
import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const skillRoot = path.resolve(__dirname, '..');
const repoRoot = path.resolve(skillRoot, '..', '..', '..');
const promptsPath = path.join(
skillRoot,
'assets',
'puzzle-template-prompts.json',
);
const defaultOutDir = path.join(repoRoot, 'public', 'puzzle-creation-templates');
const defaultTimeoutMs = 180000;
const pollDelayMs = 3000;
const args = new Map();
for (let index = 2; index < process.argv.length; index += 1) {
const raw = process.argv[index];
if (raw.startsWith('--')) {
const next = process.argv[index + 1];
if (next && !next.startsWith('--')) {
args.set(raw, next);
index += 1;
} else {
args.set(raw, true);
}
}
}
function readDotenv(fileName) {
const filePath = path.join(repoRoot, fileName);
if (!existsSync(filePath)) {
return {};
}
const values = {};
for (const line of readFileSync(filePath, 'utf8').split(/\r?\n/u)) {
const trimmed = line.trim();
if (!trimmed || trimmed.startsWith('#')) {
continue;
}
const match = /^([A-Za-z_][A-Za-z0-9_]*)=(.*)$/u.exec(trimmed);
if (!match) {
continue;
}
let value = match[2].trim();
if (
(value.startsWith('"') && value.endsWith('"')) ||
(value.startsWith("'") && value.endsWith("'"))
) {
value = value.slice(1, -1);
}
values[match[1]] = value;
}
return values;
}
function resolveEnv() {
const loaded = {
...readDotenv('.env.example'),
...readDotenv('.env.local'),
...readDotenv('.env.secrets.local'),
...process.env,
};
return {
baseUrl: String(loaded.APIMART_BASE_URL || '').trim().replace(/\/+$/u, ''),
apiKey: String(loaded.APIMART_API_KEY || '').trim(),
timeoutMs: Number.parseInt(
String(loaded.APIMART_IMAGE_REQUEST_TIMEOUT_MS || defaultTimeoutMs),
10,
),
};
}
function buildPrompt(template) {
return [
'请生成一张高清 1:1 方形插画,用作拼图创作模板样例图。',
`画面主体:${template.prompt}`,
'要求:主体清晰集中,前中后景层次明确,边角有可辨识细节,适合切成 3x3 到 7x7 拼图。',
'避免文字、水印、边框、按钮、UI 元素、教程标注、低清晰度、过度模糊、杂乱构图。',
].join('');
}
function collectStringsByKey(value, targetKey, output) {
if (Array.isArray(value)) {
value.forEach((entry) => collectStringsByKey(entry, targetKey, output));
return;
}
if (!value || typeof value !== 'object') {
return;
}
for (const [key, nested] of Object.entries(value)) {
if (key === targetKey) {
if (typeof nested === 'string' && nested.trim()) {
output.push(nested.trim());
}
if (Array.isArray(nested)) {
nested.forEach((entry) => {
if (typeof entry === 'string' && entry.trim()) {
output.push(entry.trim());
}
});
}
}
collectStringsByKey(nested, targetKey, output);
}
}
function extractImageUrls(payload) {
const urls = [];
collectStringsByKey(payload, 'url', urls);
collectStringsByKey(payload, 'image', urls);
collectStringsByKey(payload, 'image_url', urls);
return [...new Set(urls)].filter((url) => /^https?:\/\//u.test(url));
}
function extractBase64Images(payload) {
const values = [];
collectStringsByKey(payload, 'b64_json', values);
return values;
}
function extractTaskId(payload) {
const ids = [];
collectStringsByKey(payload, 'task_id', ids);
collectStringsByKey(payload, 'taskId', ids);
collectStringsByKey(payload, 'id', ids);
return ids[0] || null;
}
function inferExtensionFromContentType(contentType) {
const normalized = contentType.split(';')[0]?.trim().toLowerCase();
if (normalized === 'image/png') {
return 'png';
}
if (normalized === 'image/webp') {
return 'webp';
}
if (normalized === 'image/gif') {
return 'gif';
}
return 'jpg';
}
function inferExtensionFromBytes(bytes) {
if (bytes.subarray(0, 8).equals(Buffer.from('\x89PNG\r\n\x1A\n', 'binary'))) {
return 'png';
}
if (bytes.subarray(0, 3).equals(Buffer.from([0xff, 0xd8, 0xff]))) {
return 'jpg';
}
if (
bytes.subarray(0, 4).toString('ascii') === 'RIFF' &&
bytes.subarray(8, 12).toString('ascii') === 'WEBP'
) {
return 'webp';
}
return 'png';
}
async function fetchJson(url, options, timeoutMs) {
const abortController = new AbortController();
const timer = setTimeout(() => abortController.abort(), timeoutMs);
try {
const response = await fetch(url, {
...options,
signal: abortController.signal,
});
const text = await response.text();
if (!response.ok) {
throw new Error(`APIMart ${response.status}: ${text.slice(0, 600)}`);
}
return JSON.parse(text);
} finally {
clearTimeout(timer);
}
}
async function downloadUrl(url, timeoutMs) {
const abortController = new AbortController();
const timer = setTimeout(() => abortController.abort(), timeoutMs);
try {
const response = await fetch(url, { signal: abortController.signal });
if (!response.ok) {
throw new Error(`download ${response.status}`);
}
const bytes = Buffer.from(await response.arrayBuffer());
return {
bytes,
extension: inferExtensionFromContentType(
response.headers.get('content-type') || 'image/jpeg',
),
};
} finally {
clearTimeout(timer);
}
}
async function waitForTask(env, taskId) {
const deadline = Date.now() + env.timeoutMs;
await new Promise((resolve) => setTimeout(resolve, 10000));
while (Date.now() < deadline) {
const payload = await fetchJson(
`${env.baseUrl}/tasks/${encodeURIComponent(taskId)}`,
{
headers: {
Authorization: `Bearer ${env.apiKey}`,
},
},
env.timeoutMs,
);
const statuses = [];
collectStringsByKey(payload, 'status', statuses);
collectStringsByKey(payload, 'task_status', statuses);
const status = String(statuses[0] || '').trim().toLowerCase();
if (['completed', 'succeeded', 'success'].includes(status)) {
return payload;
}
if (['failed', 'error', 'canceled', 'cancelled', 'unknown'].includes(status)) {
throw new Error(`APIMart task ${taskId} failed: ${JSON.stringify(payload).slice(0, 600)}`);
}
await new Promise((resolve) => setTimeout(resolve, pollDelayMs));
}
throw new Error(`APIMart task ${taskId} timed out`);
}
async function generateOne(env, template, outDir) {
const requestBody = {
model: 'gpt-image-2',
prompt: buildPrompt(template),
n: 1,
size: '1:1',
};
const payload = await fetchJson(
`${env.baseUrl}/images/generations`,
{
method: 'POST',
headers: {
Authorization: `Bearer ${env.apiKey}`,
'Content-Type': 'application/json',
},
body: JSON.stringify(requestBody),
},
env.timeoutMs,
);
const resolvedPayload =
extractImageUrls(payload).length || extractBase64Images(payload).length
? payload
: await waitForTask(env, extractTaskId(payload));
const urls = extractImageUrls(resolvedPayload);
const b64Images = extractBase64Images(resolvedPayload);
let image;
if (urls[0]) {
image = await downloadUrl(urls[0], env.timeoutMs);
} else if (b64Images[0]) {
const bytes = Buffer.from(b64Images[0], 'base64');
image = {
bytes,
extension: inferExtensionFromBytes(bytes),
};
} else {
throw new Error(`APIMart returned no image for ${template.id}`);
}
mkdirSync(outDir, { recursive: true });
const outputPath = path.join(outDir, `${template.id}.${image.extension}`);
writeFileSync(outputPath, image.bytes);
return outputPath;
}
const dryRun = args.has('--dry-run') || !args.has('--live');
const outDir = path.resolve(String(args.get('--out-dir') || defaultOutDir));
const limit = Number.parseInt(String(args.get('--limit') || '0'), 10);
const onlyIds = String(args.get('--only') || '')
.split(',')
.map((value) => value.trim())
.filter(Boolean);
const templates = JSON.parse(readFileSync(promptsPath, 'utf8')).filter(
(template) => !onlyIds.length || onlyIds.includes(template.id),
);
const selectedTemplates = limit > 0 ? templates.slice(0, limit) : templates;
if (dryRun) {
console.log(
JSON.stringify(
{
mode: 'dry-run',
outDir,
count: selectedTemplates.length,
requests: selectedTemplates.map((template) => ({
id: template.id,
title: template.title,
body: {
model: 'gpt-image-2',
prompt: buildPrompt(template),
n: 1,
size: '1:1',
},
})),
},
null,
2,
),
);
process.exit(0);
}
const env = resolveEnv();
if (!env.baseUrl || !env.apiKey) {
console.error(
JSON.stringify({
ok: false,
error: 'Missing APIMART_BASE_URL or APIMART_API_KEY',
hasBaseUrl: Boolean(env.baseUrl),
hasApiKey: Boolean(env.apiKey),
}),
);
process.exit(1);
}
const generated = [];
for (const template of selectedTemplates) {
console.log(`Generating ${template.id}...`);
generated.push(await generateOne(env, template, outDir));
}
console.log(
JSON.stringify(
{
ok: true,
count: generated.length,
files: generated,
},
null,
2,
),
);