# spintax.net MCP server (remote · spintax.net)

Validate, render and analyze spintax templates. Backed by @spintax/core. No authentication.

- Trust score: 69/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-06

## Components

- remote · `spintax.net`: 69/100 (this document), [markdown](https://verifymcp.io/servers/net-spintax-mcp/spintax.md), [page](https://verifymcp.io/servers/net-spintax-mcp/spintax)

## Channel facts

- Endpoint: `https://spintax.net/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-06.

- **Endpoint Security**: 66/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 85/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1632 tokens (~60/item across 27 items; 3 tools + 24 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 97/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 91% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### Claude

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

### Codex

```toml
[mcp_servers.net-spintax-mcp]
url = "https://spintax.net/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "net-spintax-mcp": {
      "type": "remote",
      "url": "https://spintax.net/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add net-spintax-mcp --url https://spintax.net/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  net-spintax-mcp:
    url: "https://spintax.net/mcp"
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-06 (score 69, 0)

- [functional] New resource “Spintax for cold email”

### 2026-08-05 (score 69, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-04 (score 68)

First indexed and scored.

## MCP tools (3)

### `validate_spintax` (~161 tokens)

Validate a spintax template

Static validation: returns diagnostics with severity, stable code, message and 1-based line/column. A template with no "error"-severity diagnostics is safe to render. Pass knownVariables for names you will supply at render time to silence their variable.undefined warnings.

Input parameters:

- `knownVariables` (array): Variable names the caller will supply at render time (case-insensitive).
- `locale` (string): Locale for {plural …} arity, e.g. "en" (2-form) or "ru" (3-form: ru/uk/be/sr/hr/bs). Omit for the 2-form default.
- `template` (string, required): Spintax template source (max 8192 characters). #include is disabled on this server.

Output parameters:

- `diagnostics` (array)
- `errorCount` (integer)
- `valid` (boolean): True when no error-severity diagnostics.
- `warningCount` (integer)

### `render_spintax` (~205 tokens)

Render spintax variants

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 first.

Input parameters:

- `context` (object): Variable map, e.g. {"CITY": "Prague"}. Overrides #set/#def definitions.
- `count` (integer): Number of variants (1–20).
- `locale` (string): Locale for {plural …} arity, e.g. "en" (2-form) or "ru" (3-form: ru/uk/be/sr/hr/bs). Omit for the 2-form default.
- `seed` (string|number): Deterministic RNG seed; omit for random output.
- `template` (string, required): Spintax template source (max 8192 characters). #include is disabled on this server.

Output parameters:

- `variants` (array)

### `analyze_spintax` (~157 tokens)

Analyze a spintax template

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 must I supply" — it is NOT a variant-cardinality counter.

Input parameters:

- `knownVariables` (array)
- `locale` (string): Locale for {plural …} arity, e.g. "en" (2-form) or "ru" (3-form: ru/uk/be/sr/hr/bs). Omit for the 2-form default.
- `template` (string, required): Spintax template source (max 8192 characters). #include is disabled on this server.

Output parameters:

- `constructs` (object)
- `defs` (array)
- `diagnostics` (array)
- `includes` (array)
- `refs` (array)
- `sets` (array)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/net-spintax-mcp/spintax#diagnostics

## Score history

- 2026-08-06: 69
- 2026-08-05: 69
- 2026-08-04: 68

## Links

- Remote endpoint: https://spintax.net/mcp
- Website: https://spintax.net/docs/
- Changelog RSS feed: https://verifymcp.io/servers/net-spintax-mcp/spintax.xml
- Changelog JSON feed: https://verifymcp.io/servers/net-spintax-mcp/spintax.json
- HTML version of this page: https://verifymcp.io/servers/net-spintax-mcp/spintax