Merit — Ukrainian Law & Registers (MCP server)

A remote Model Context Protocol server that gives an AI assistant read-only access to Ukrainian law and public registers: legislation in its version on any date, Supreme Court practice, court hearings, the company register, professional registers, enforcement proceedings, debtors and five sanctions lists.

• Endpoint: https://law.merit.legal/mcp (Streamable HTTP)
• Registry name: legal.merit/law
• Authentication: OAuth 2.1 — the client opens the Merit sign-in page, you sign in with your email
• Website, pricing and help: https://merit.legal/en/mcp

This repository holds documentation only. The server is a hosted service; its source code is not public.

What it does

The assistant calls the server instead of answering from memory. It searches the official sources, reads the right article or record and answers with the source and its date.

• Read only. No tool changes or sends anything.
• It does not see your chat. The assistant sends only the request to a source (a case number, an article, a company code).
• Stateless. Each request stands alone.

Sources

50+ sources and 120+ tools. Each source is a set of tools named source__action (for example ua_law__get_unit_in_force). The assistant sees the main tools at once and finds the others through the server's catalogue tools (catalog__search, catalog__describe, catalog__call).

Group	Sources
Legislation	ua_law (Verkhovna Rada acts, editions on any date, comparison of editions, draft laws), ua_npa_registry, ua_ccu, ua_dstu, ua_war_territories
Case law	ua_edrsr (Unified State Register of Court Decisions), ua_lpd (Supreme Court legal positions), ua_vs_digest, ua_echr
Courts	ua_court_directory, ua_court_hearings, ua_court_transfer
Companies and public data	ua_edr_companies (companies and sole proprietors), ua_nazk_declarations, ua_corruption_registry, ua_licenses, ua_media_registry, prozorro, ua_construction, ua_ip
Tax	ua_tax_registers, ua_zir
Foreign companies	gleif, uk_companies_house, icij_offshore_leaks
Person checks	ua_wanted_persons, ua_lustration, ua_lost_documents
Professional registers	ua_advocates, ua_notaries, ua_experts, ua_expert_methodics, ua_trustees, ua_auditors, ua_appraisers
Debts, enforcement, bankruptcy	ua_enforcement_proceedings, ua_debtors, ua_bankruptcy
Sanctions	ua_sanctions, eu_sanctions, ofac_sanctions, uk_sanctions, un_sanctions
Regulators	ua_amcu_decisions, ua_amcu_offenders, ua_nbu_bank_directory, ua_nbu_financial_institutions, ua_nbu_currency_exchange
Calculations and calendar	ua_nbu_rate, ua_cpi_inflation, ua_legal_indicators (court fee, subsistence minimum, NBU rate), ua_holidays, ua_gp_crime_stats

Honest answers

Every source follows the same rules:

• as_of is the publication date of the source itself, not the date of our sync. An outdated snapshot carries stale.
• available: false with a reason means the source could not answer. It is not an empty result.
• An empty result never means that the person, company or proceeding does not exist.
• A shortened field always carries a flag or a character count.
• Sanctions are split by authority. A "no" from one list says nothing about the others.

Configuration

You need a Merit account: https://merit.legal/en/mcp. On the first call the client opens the sign-in page.

VS Code (GitHub Copilot)

Add to .vscode/mcp.json or to your user MCP configuration:

{
  "servers": {
    "merit": {
      "type": "http",
      "url": "https://law.merit.legal/mcp"
    }
  }
}

Cursor and other clients with mcpServers

{
  "mcpServers": {
    "merit": {
      "url": "https://law.merit.legal/mcp"
    }
  }
}

Claude, ChatGPT, Gemini

• Claude (claude.ai, Desktop, mobile): Customize → Connectors → find Merit, or add a custom connector with https://law.merit.legal/mcp.
• ChatGPT: find Merit under Plugins, or add a custom MCP server with the same address.
• Gemini: add a custom app with the same address in the connected apps settings.

Usage

Ask a legal question in plain language, in Ukrainian or English. The assistant picks the tools.

Ask	Tools the assistant uses
Which version of Art. 625 of the Civil Code was in force on 15 March 2022, and what has changed since?	ua_law__get_unit_in_force, ua_law__compare_unit_editions
Find Supreme Court positions on 3% per annum and inflation losses under martial law.	ua_lpd__search, ua_vs_digest__search, ua_edrsr__search
Check a counterparty by its EDRPOU code: status, director, enforcement proceedings, sanctions.	ua_edr_companies__lookup, ua_enforcement_proceedings__search, ua_debtors__search, ua_sanctions__search, eu_sanctions__search
Calculate inflation losses on a debt of 120,000 UAH from February 2024 to September 2026.	ua_cpi_inflation__lookup, ua_law__get_unit_in_force
When is the next hearing in my case, and has its jurisdiction changed?	ua_court_hearings__search, ua_court_transfer__search, ua_court_directory__lookup
Is the certificate of the other side's advocate valid?	ua_advocates__search, ua_advocates__get_advocate

The server gives the assistant sources with links and dates. The conclusion and the responsibility stay with the lawyer.

Plans

A trial week costs 1 UAH. Paid plans start at 790 UAH per 4 weeks. A call is one successful tool call. Details: https://merit.legal/en/mcp#pricing.

Support

• Email: hello@merit.legal
• Help: https://merit.legal/en/mcp/help
• Terms (Ukrainian): https://merit.legal/mcp/offer