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Spintax MCP server

Which MCP servers are Spintax'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 2026-10-15

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Whose server it is
  • Registry namenet.spintax/mcpverified in the MCP registry

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

When we asked itchecked 2026-10-15
  • Stateanswerschecked 2026-10-15
  • Tools4
  • Server calls itselfspintax-net
  • Server version1.2.2
  • Protocol version2025-06-18

On 2026-10-15 the server answered initialize and tools/list without a sign-in. First answer in 60 ms.

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

Once connected

  • Parameters are untyped or undescribed in 1 of 4 tools: check arguments before calling.

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: 17, the first on 2026-10-19
  • INITE MCP score91 of 100answers 100 · definitions 96 · context 100 · use 43 · connects 100
  • Use147 npm downloads a week
  • Answered100% of days17 of 17 daily checks
  • Median first answer120 ms
  • Space in an agent's context≈ 974 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsA · 96 of 100
  • Typed results4 of 4 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 1 of 4

What an agent can do with it

  • not sure · draft spintax templates with an AI model
  • not sure · generate unique email variants from one template
  • cannot · render product feed text variants on WordPress

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 offers4 tools · read 2026-10-15
  • validate_spintax

    Static validation: returns diagnostics with severity, stable code, message and 1-based line/column. No "error"-severity diagnostic means the template is structurally sound — read the warnings before rendering, because some of them…

  • render_spintax

    Renders up to 20 variants. With a seed the output is deterministic (variant i uses seed "<seed>#<i>"); without one it is random. The engine is lenient: structural mistakes never throw, they surface in the output — run validate_spintax…

  • analyze_spintax

    Reports what the template needs and contains: refs (variables referenced), sets (#set macros, re-picked per reference), defs (#def, rolled once per render), includes, diagnostics, and best-effort construct counts. Answers "what variables…

  • spintax_authoring_guide

    Read this BEFORE writing or editing a spintax template — it is the canonical authoring guide the whole spintax toolchain is written against, not a tutorial. Pass the locale you will author in: for ru/uk/be and sr/hr/bs it carries the…

How to connect

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

{
  "mcpServers": {
    "spintax": {
      "type": "http",
      "url": "https://spintax.net/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http spintax https://spintax.net/mcp

Add to CursorAdd to VS Code

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

Also shipped through: npm

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.