Skill for working with 1C:Enterprise via Playwright MCP (browser).
Source: adapted from RooLee10/1c-web-session (MIT)
Starting the database
- Read
CLAUDE.mdof the project — find the database URL (format:http://<сервер>/<публикация>/ru_RU/) browser_navigateto the URL- Handle the license/login if they appear (see below)
Termination and restart
Service and settings → File → Exit → Terminate
Restart: terminate → browser_navigate to the URL.
CRITICAL RULES OF THE 1C web client
1. Clipboard paste — the ONLY input method
Standard fill(), type(), pressSequentially() do NOT work in 1C. Always:
await page.evaluate((v) => navigator.clipboard.writeText(v), 'Значение');
await page.keyboard.press('Control+A'); // очистить поле
await page.keyboard.press('Control+V');
2. Suffix selectors — the ONLY reliable method
1C forms receive incremental IDs (form26, form40). Never hardcode the form number.
// ПРАВИЛЬНО
await page.locator('[id$="_ВидНоменклатуры_DLB"]').click();
// НЕПРАВИЛЬНО — сломается после первой формы
await page.locator('[id="form40_ВидНоменклатуры_DLB"]').click();
3. DLB buttons — a universal selection pattern
All selection buttons have the suffix _DLB — both enumerations and catalogs:
await page.locator('[id$="_ВидАттракциона_DLB"]').click();
await page.waitForTimeout(100);
if (await page.locator('#editDropDown').count() > 0) {
// Dropdown — перечисление или небольшой справочник
await page.locator('#editDropDown').getByText('Экстремальный').click();
} else {
// Picker — большой справочник
await page.getByTitle('Выбрать значение (Ctrl+Enter)').waitFor();
await page.getByText('Экстремальный').click();
await page.getByTitle('Выбрать значение (Ctrl+Enter)').click();
}
4. Navigation cache
Section IDs (#themesCell_theme_N) and menu item IDs (#cmd_0_3_txt) are unique to each database.
On the first launch — execute references/scan-nav.js via browser_run_code, save the result to .claude/1c-nav.json (Write tool).
Navigation — only via cached IDs:
await page.locator('#themesCell_theme_1').click(); // из 1c-nav.json
await page.locator('#cmd_0_3_txt').waitFor({ state: 'visible', timeout: 2000 });
await page.locator('#cmd_0_3_txt').click();
Do NOT use getByText('Справочники') — strict mode violation.
Handling dialogs
License dialog
"No free license found!" — set the checkbox via JS, click "Run launch":
async (page) => {
const rows = await page.locator('text=сеанс:').all();
for (const row of rows) {
const parent = row.locator('xpath=..');
await parent.locator('input, [class*="check"], [class*="box"]').first().click();
}
return { clicked: rows.length };
}
Login form
If it appears — immediately browser_navigate with the same URL. Do not click "Log in".
Modal dialogs
| Dialog | Action |
|---|---|
beforeunload |
browser_handle_dialog с accept: true |
| "Data has been modified" | locator('a').filter({ hasText: 'Нет' }).click() |
| Confirmation (Mark for deletion?) | page.keyboard.press('Enter') |
Keyboard shortcuts
| Shortcut | Action |
|---|---|
Ctrl+Enter |
Write and close / Post and close |
Ctrl+S |
Write (without posting) |
Escape |
Close error dialog |
Tab |
Next field |
F4 |
Show list for selection |
Ins |
Add row to tabular section |
Ctrl+Shift+Z |
Close validation errors panel |
Delete |
Mark for deletion |
Posting: Ctrl+Enter posts and generates movements. Ctrl+S only writes.
"Name" field on creation
The "Name" field is already focused when opening the new item form. Do not search by ID:
await page.keyboard.press('Control+A');
await page.evaluate((v) => navigator.clipboard.writeText(v), name);
await page.keyboard.press('Control+V');
Tabular sections
Add row (Ins), fill clipboard paste + Tab between fields.
Reference in cell:
await page.keyboard.press('F4');
await page.waitForTimeout(300);
await page.getByTitle('Выбрать значение (Ctrl+Enter)').waitFor();
const pickerSearch = page.getByRole('textbox', { name: 'Поиск (Ctrl+F)' }).last();
await pickerSearch.click();
await page.evaluate((v) => navigator.clipboard.writeText(v), 'Текст поиска');
await page.keyboard.press('Control+V');
await page.waitForTimeout(600);
await page.locator('.gridBoxText').filter({ hasText: /Текст поиска/ }).first().click({ force: true });
await page.getByTitle('Выбрать значение (Ctrl+Enter)').click();
With multiple tables on a form — scope to the desired command bar:
await page.locator('[id$="_ТоварыКоманднаяПанель"]').last()
.getByTitle('Добавить новый элемент (Ins)').click();
Creating an object from a dropdown
If the required item is not in the reference:
await page.locator('[id$="_Филиал_DLB"]').click();
await page.waitForTimeout(200);
await page.getByTitle('Создать (F8)').click();
await page.waitForTimeout(500);
// Форма нового объекта — после Ctrl+Enter подставится автоматически
Groups in hierarchical references
Expand/collapse — double click. When creating inside an expanded group, the "Group" field is filled automatically.
JS verification (instead of screenshot)
After Ctrl+Enter check the result directly in browser_run_code:
await page.waitForTimeout(800);
const hasModal = await page.locator('.modalSurface').count() > 0;
const formOpen = await page.getByRole('textbox', { name: 'Наименование:' }).count() > 0;
const hasValidationPanel = await page.locator('[title="Закрыть (Ctrl+Shift+Z)"]')
.filter({ visible: true }).count() > 0;
if (hasModal) return { status: 'error', reason: 'модальная ошибка' };
if (formOpen && hasValidationPanel) return { status: 'error', reason: 'ошибка валидации' };
if (formOpen) return { status: 'error', reason: 'форма не закрылась' };
return { status: 'ok' };
Running JS scripts
Command запусти сценарий <путь>.js — execute a file via browser_run_code.
Method A (default): clipboard loader
Get-Content -LiteralPath <путь> -Raw | Set-Clipboard
Then loader in browser_run_code:
async (page) => {
let src;
try { src = await page.evaluate(() => navigator.clipboard.readText()); }
catch (e) { return { ok: false, stage: 'clipboard', message: String(e) }; }
if (!src || !src.includes('async (page)'))
return { ok: false, stage: 'clipboard', message: 'Нет сценария в буфере' };
let scenario;
try { scenario = (0, eval)(`(\n${src}\n)`); }
catch (e) { return { ok: false, stage: 'compile', message: e.message }; }
try { return { ok: true, result: await scenario(page) }; }
catch (e) { return { ok: false, stage: 'runtime', message: e.message, stack: e.stack }; }
}
Method B (fallback): direct launch
If clipboard is unavailable — read the file, pass the code directly to browser_run_code.
Utility scripts
Ready-made scripts in .claude/skills/1c-web-session/scripts/ — include in browser_run_code via ${read(...)}.
1c-screenshot.js
Screenshots + selector cache (.claude/1c-web-cache.json):
screenshot1C(page, name, opts)— screenshot inplaywright-screenshots/, auto-cleanup > 7 daysloadCache(baseUrl)/saveSelector(baseUrl, key, value)— read/write cache (dot notation)locatorWithCache(page, baseUrl, cacheKey, fallbacks[])— tries cache → fallbacks → saves the found one
1c-login.js (requires 1c-screenshot.js)
login1C(page, baseUrl, user, password) — login via clipboard paste, skips if already logged in.
1c-open-object.js
openObject1C(page, baseUrl, metadataPath, guid)— open object by GUIDopenList1C(page, baseUrl, metadataPath)— open list
1c-snapshot.js (requires 1c-screenshot.js)
snapshot1C(page, navigateTo?) — collects visibleFields (label+value without screenshot) + form title.
1c-fill-form.js
fillForm1C(page, fields, options) — fills form fields via clipboard paste.
Example: open an object by GUID and read the fields
async (page) => {
// paste content of 1c-open-object.js
// paste content of 1c-screenshot.js
// paste content of 1c-snapshot.js
return await snapshot1C(page,
'http://YOUR_EDT_SERVER/KAF/e1cib/data/Справочник.Номенклатура?ref=<guid>'
);
}
Optimization
Detailed recommendations — in references/optimization.md. Key points:
- One
browser_run_codefor the entire task — not step-by-step calls Tabbefore the DLB click — removes focus from the input fieldwaitForTimeout(50)for dropdown —waitForis redundant- JS verification inside — without screenshot
browser_snapshotonly on the first type of the element or on error- If the chain fails → switch to step-by-step tools +
browser_snapshot