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1C MCP Toolkit

A 1C external data processor with MCP and REST API: queries, metadata, event log and code execution without changing the configuration

MCP serverHigh riskRussian stack

roctup/1c-mcp-toolkitAuthor: ROCTUP

Install

docker run -d -p 6003:6003 -e ALLOW_DANGEROUS_WITH_APPROVAL=true --restart unless-stopped --name 1c-mcp-toolkit-proxy roctup/1c-mcp-toolkit-proxy

Proxy mode. Set the proxy URL http://localhost:6003 in the processor and connect.

This is third-party code. Review the repository files before installing.

What it does

The tool connects the agent to a 1C infobase through an external data processor, so there is no need to change the configuration or publish the base. In built-in mode the HTTP server runs inside the processor; in proxy mode the processor polls a Python server for commands. The agent runs 1C queries, reads metadata, the event log, access rights and object references, gets BSL syntax help and can execute arbitrary code. Anonymization replaces real values with tokens and restores them in the final answer.

Who it is for. For 1C developers and analysts who need an agent with infobase data access without modifying the configuration.

Good fit when

  • You cannot change the configuration or publish the base on a web server
  • The agent needs to query data and read the event log
  • You need to hide personal data from a cloud model

Not a fit when

  • Code execution in the working base is not acceptable
  • You need source analysis without a running 1C client

Example request

Use MCP to select the ten latest sales documents with amount and counterparty

Limitations

The processor must be open in a running 1C client. The built-in server has no authentication by default; a token is enabled on the form. Window screenshots work on Windows only, and on macOS the built-in server needs compiled native components. GPL-3.0 licensed.

How to disable. Stop the server and close the processor in 1C, stop the proxy container and remove the server from the client settings.

MCP

Transport
http
Authentication
not required
Environment variables
ALLOW_DANGEROUS_WITH_APPROVAL
Allow dangerous operations with approval in proxy mode
ANONYMIZATION_ENABLED
Enable data anonymization in proxy mode

Security check

  • The execute_code tool runs arbitrary code in the 1C base
  • Reads live data, including personal data
  • The built-in server has no authentication by default

README in short

The README covers two architectures, built-in server and proxy, with a quick start for each including a Docker Hub image. It gives settings for Kiro and Claude Desktop, token authentication, and tables of MCP tools and REST endpoints. Sections cover anonymization, a blocklist of dangerous operations and channel isolation. The skills folder contains skills for the REST API and for composing 1C queries.

FAQ

How do I connect Claude Desktop?

Its config supports only stdio, so the README suggests the mcp-remote bridge via npx or a custom connector on paid plans.

How do I separate test and production bases?

With channel IDs: one proxy, different channel parameters in the URL and processor settings.

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