1c-ai-mcp: Instructions file for Claude Code

CLAUDE.md

1c-ai-mcp CLAUDE.md is an instructions file for Claude Code from serezhenkov-lab/1c-ai-mcp. It costs 1,687 tokens per session, scanned A, original, MIT.

Project instructions for 1c-ai-mcp, an MCP server connecting AI agents to the 1С:Напарник API for reviewing, explaining, checking and rewriting 1C code and finding documentation. MCP is a standard way for AI agents to use external tools.

In plain words
What is it for?
Use them when developing, running or packaging the server, or when maintaining its 1C code-analysis and documentation tools.
Why use it?
They give a coding agent the project structure, build process and API flow needed to work on this Russian 1C integration.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is serezhenkov-lab/1c-ai-mcp's own configuration. It tells Claude Code how to work on 1c-ai-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything 1c-ai-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to serezhenkov-lab/1c-ai-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/serezhenkov-lab/1c-ai-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/serezhenkov-lab/1c-ai-mcp

Made for: Claude Code.

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Per session 1,687 This file is loaded in full into every session.
When invoked 1,687 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01687 $0.01687
Opus 5 $0.00843 $0.00843
Sonnet 5 $0.00337 $0.00337
Haiku 4.5 $0.00169 $0.00169

Measured 9d ago against content hash 7c8c62553e95, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

1c-ai-mcp CLAUDE.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 9d 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.

CLAUDE.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

MCP-сервер (Model Context Protocol) для интеграции с API 1С:Напарник (code.1c.ai). Построен на FastMCP (Python), упакован в Docker. Предоставляет 12 инструментов: анализ кода (check_1c_code, ask_1c_ai, explain_1c_syntax, review_1c_code, rewrite_1c_code, modify_1c_code) и документация (its_help, fetch_its, search_1c_documentation, onec_help, diff_1c_documentation_versions, config_help) - все через HTTP API 1С:Напарник.

Основан на идее comol/1c-code-checker с исправлениями формата API-запросов (ошибки 422), заимствованными из SteelMorgan/spring-mcp-1c-copilot.

Architecture

main.py                  ← точка входа, запуск FastMCP
src/
  mcp_server.py          ← определение MCP-инструментов (@mcp.tool)
  onec_api_client.py     ← HTTP-клиент к API 1С:Напарник (httpx + SSE)
Dockerfile               ← основной Dockerfile (python:3.11-slim)
docker-compose.yml       ← compose для запуска
tests/                   ← тестовые скрипты

Поток данных: MCP-клиент (Cursor/Claude Code) → FastMCP HTTP endpoint (:8007/mcp) → mcp_server.py (tool handlers) → OneCApiClientcode.1c.ai API (SSE stream) → парсинг ответа → возврат клиенту.

Сессии: OneCApiClient управляет пулом conversation sessions (создание, переиспользование, TTL-очистка, лимит активных).

API 1С:Напарник:

  • POST /chat_api/v1/conversations/ — создание дискуссии (поля: tool_name, skill_name, is_chat)
  • POST /chat_api/v1/conversations/{id}/messages — отправка сообщения (SSE-ответ), content: {content: {instruction: "..."}}

Build & Run

# Docker build
docker build -t 1c-ai-mcp .

# Docker run
docker run -d -p 8007:8007 -e ONEC_AI_TOKEN="token" 1c-ai-mcp

# Docker Compose
docker compose up -d

# Local dev
pip install -r requirements.txt
ONEC_AI_TOKEN="token" python main.py

Environment Variables

Variable Required Default Description
ONEC_AI_TOKEN Yes* API-токен 1С:Напарник
ONEC_AI_TOKEN_FILE No Путь к файлу с токеном (Docker Secrets, приоритет над TOKEN)
ONEC_AI_BASE_URL No https://code.1c.ai Базовый URL API
ONEC_AI_SKILL_NAME No raw Skill для создания дискуссий (raw, custom)
ONEC_AI_AUTH_FORMAT No plain Формат Authorization header (plain / bearer)
ONEC_AI_TIMEOUT No 120 Таймаут HTTP-запросов (сек)
ONEC_CONFIG_NAME No Конфигурация по умолчанию для config_help (например, "ERP", "ЗУП")
HTTP_PORT No 8007 Порт MCP-сервера
USESSE No false Транспорт: true=SSE, false=streamable-http
MAX_ACTIVE_SESSIONS No 10 Лимит активных сессий
SESSION_TTL No 3600 TTL сессии (сек)
MCP_TOOL_CALL_MODE No standard Режим вызова upstream: standard (промпты) / direct (прямой вызов инструментов)
ONEC_AI_INPUT_MAX_LENGTH No 100000 Макс. длина входных данных (символов)
LOG_LEVEL No INFO Уровень логирования (DEBUG, INFO, WARNING)

Read the full file on GitHub · 91 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.

  1. 9d ago First seen · 91 lines · 1,687 tokens per session scan A 7c8c62553e95

Subscribe to this mod's changes

1c-ai-mcp CLAUDE.md is an instructions file published in the GitHub repository serezhenkov-lab/1c-ai-mcp (0 stars, last pushed 16d ago), licensed MIT. It adds 1,687 tokens to every session, about $0.0084 per session on Opus 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.

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