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Leonida Lab MCP server

Which MCP servers are Leonida Lab's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-21

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Whose server it is
  • Registry namecom.leonidalab/gta6-factsverified in the MCP registry

The registry name sits under leonidalab.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-21
  • Stateanswerschecked 2026-10-21
  • Tools5
  • Server calls itselfleonidalab
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-21 the server answered initialize and tools/list without a sign-in. First answer in 1157 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 16, the first on 2026-10-21
  • INITE MCP score87 of 100answers 100 · definitions 100 · context 100 · use 0 · connects 100
  • Answered100% of days16 of 16 daily checks
  • Median first answer282 ms
  • Space in an agent's context≈ 959 tokensthe definitions of all its tools (5), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 5 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • not sure · track the GTA VI launch countdown by region
  • not sure · compare GTA VI editions and prices across countries
  • not sure · check which GTA VI facts are officially confirmed

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers5 tools · read 2026-10-21
  • check_claim

    Checks one claim about GTA 6 (Grand Theft Auto VI) against the record: a PC version, 60 FPS, the frame rate, online at launch, a disc, crossplay, early access, map size, story length, age rating, microtransactions and more. Returns the…

  • release_info

    When GTA 6 comes out: the official date (November 19, 2026), the platforms and which are not announced, the unlock time in each of 15 regions or in the one place you name, and the dates around launch (boxed copies and preload, the…

  • price_in_country

    What a buyer pays for GTA 6 in one of 63 markets, Standard and Ultimate, read from the official PlayStation Store and Xbox Store listings: the price at checkout in local currency, its US dollar value at the official exchange rate, and…

  • compare_editions

    The two GTA 6 editions side by side: US list prices, what each includes, every Ultimate Edition bonus as Rockstar lists it, the pre-order bonus and its deadline, the fact that there is no disc (boxed copies hold a download code), and the…

  • recent_changes

    Dated entries from the Leonida Lab changelog, newest first: what Rockstar Games, Take-Two or the stores announced, what press reported, and changes to the site itself, each labelled and linked to its source. Optionally only entries since…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "gta6-facts": {
      "type": "http",
      "url": "https://leonidalab.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http leonidalab https://leonidalab.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://leonidalab.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.