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MCP-1C: MCP Gateway and MCP Server for 1C

MCP-1C is an MCP gateway and MCP server for 1C that lets AI assistants access 1C databases through roles and permissions, PII masking, quotas, and a full audit log, while giving developers 1C tools directly in their IDE. A free open-source edition is available.

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About this tool

What

MCP-1C is MCP-1C is an MCP gateway and MCP server for 1C. It routes AI assistant requests to 1C databases through roles and permissions, PII masking, quotas, and a full audit log, and it gives developers 1C tools directly in their IDE.

Key capabilities

  • Secure gateway: AI assistant requests to 1C databases pass through role and permission controls, PII masking, quotas, and a full audit log.
  • In-IDE developer tools: 1C tools for developers, integrated directly in the IDE.
  • Configuration analysis: analyze_subsystems analyzes subsystem topology and the distribution of 1C configuration objects across subsystems; code_read supports form_structure and object_structure actions.
  • Configuration comparison: action: "analyze" queues a 2-way or 3-way configuration comparison and returns a job_id.
  • Form creation: action: "create_form" creates a form by copying an existing one (the first form of an object cannot be created because there is nothing to copy).
  • AI error triage: By error group, the panel suggests a probable cause and a 1C-specific fix using a local (on-prem) LLM, so data does not leave the environment.
  • Unit test generation: Supports unit test generation with YAxUnit + Vanessa.
  • Git bridge and AI code review.
  • Role model: Manager (or Accountant, which can additionally post and unpost in the web console) has read tools plus 4 write tools that create drafts for approval; accountant-view and manager-view remove draft creation (draft:create). An AI client can view only its own drafts via list_my_drafts and get_draft.
  • Context retention: The AI assistant selects the needed database itself and saves important context, restoring it in later sessions without losing the thread of project work.

Platforms

and deployment Supports Linux, macOS, and Windows. Open-source and self-hosted. Config files live at ~/Library/Application Support/mcp-1c on macOS and %AppData%\mcp-1c on Windows.

Licensing

Uses free, freemium, and subscription models. One license covers one running instance.

Best for
  • 1C developers who want 1C tools inside their IDE
  • Teams connecting AI assistants to 1C databases securely
  • 1C administrators managing roles, permissions, and audit
  • Organizations that need PII masking and quotas for AI access
  • Environments that require on-prem LLM error triage
  • Users who want a free open-source edition with self-hosting
Use cases
  • AI code review via Git bridge
  • AI error triage with on-prem LLM
  • Automated unit test generation for 1C
  • AI-assisted 1C configuration analysis
  • Secure AI access to 1C databases with roles and audit
Strengths
  • Open-source and self-hosted
  • Free edition available alongside freemium and subscription models
  • Role-based access with read tools plus 4 draft-creating write tools
  • PII masking, quotas, and a full audit log
  • On-prem LLM error triage keeps data in the environment
  • Supports Linux, macOS, and Windows
Limitations
  • One license covers one running instance
  • The first form of an object cannot be created because there is nothing to copy
  • AI clients can view only their own drafts via list_my_drafts and get_draft
  • accountant-view and manager-view remove draft creation (draft:create)

Features & use cases

MCP gateway for 1C with roles and permissionsPII masking, quotas, and full audit logIn-IDE 1C developer toolsSubsystem topology analysis (analyze_subsystems)2-way and 3-way configuration comparisonForm creation by copying existing formsAI error triage with on-prem LLMUnit test generation (YAxUnit + Vanessa)Git bridge and AI code reviewDraft-based write tools with approvalPer-client draft visibility (list_my_drafts, get_draft)Cross-session context retention

Quick facts

Public API available

At a glance

Monetization
  • Free
  • Freemium
  • Subscription
Maturity signals
  • Open source
  • Self-hostable
Learning curve
  • Medium

Sources

Every profile keeps its sources and latest verification date.
01https://feenlace.ru/docs/gateway-observability/

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