{
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      "liveUrl": "https://www.anchorterminal.com/api/v1/live/spintax-mcp.json",
      "markdownUrl": "https://www.anchorterminal.com/tools/spintax-mcp.md",
      "mcpTools": {
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          "totalTokens": 1627,
          "counts": {
            "error": 0,
            "note": 0,
            "warn": 1
          },
          "findings": [
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "analyze_spintax",
              "message": "1 parameter without a description: knownVariables",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            }
          ]
        },
        "checkedAt": "2026-10-04T22:25:35Z",
        "count": 4,
        "schemaTokens": 1627,
        "status": "ok",
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            "title": "Validate a spintax template",
            "description": "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 (plural.locale-missing) mean a block will not resolve. Pass knownVariables for names you will supply at render time to silence their variable.undefined warnings.",
            "inputSchema": {
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                  "type": "string"
                },
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            },
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                        "description": "Stable machine code, e.g. plural.arity",
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                        "description": "1-based",
                        "type": "integer"
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                        "description": "1-based",
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                      },
                      "severity": {
                        "enum": [
                          "error",
                          "warning"
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                        "type": "string"
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                    },
                    "required": [
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                      "code",
                      "message",
                      "line",
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                    "type": "object"
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                  "type": "array"
                },
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                  "description": "True when no error-severity diagnostics.",
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                  "type": "integer"
                }
              },
              "required": [
                "valid",
                "errorCount",
                "warningCount",
                "diagnostics"
              ],
              "type": "object"
            },
            "annotations": {
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "render_spintax",
            "title": "Render spintax variants",
            "description": "Renders up to 20 variants. With a seed the output is deterministic (variant i uses seed \"\u003cseed\u003e#\u003ci\u003e\"); without one it is random. The engine is lenient: structural mistakes never throw, they surface in the output — run validate_spintax first.",
            "inputSchema": {
              "additionalProperties": false,
              "properties": {
                "context": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "description": "Variable map, e.g. {\"CITY\": \"Prague\"}. Overrides #set/#def definitions.",
                  "type": "object"
                },
                "count": {
                  "default": 3,
                  "description": "Number of variants (1–20).",
                  "maximum": 20,
                  "minimum": 1,
                  "type": "integer"
                },
                "locale": {
                  "description": "Locale for {plural …} arity, e.g. \"en\" (2-form), \"ru\" (3-form: ru/uk/be/sr/hr/bs) or \"ar\" (6-form). Omit for the 2-form default.",
                  "type": "string"
                },
                "seed": {
                  "description": "Deterministic RNG seed; omit for random output.",
                  "type": [
                    "string",
                    "number"
                  ]
                },
                "template": {
                  "description": "Spintax template source (max 8192 characters). #include is disabled on this server.",
                  "maxLength": 8192,
                  "type": "string"
                }
              },
              "required": [
                "template"
              ],
              "type": "object"
            },
            "outputSchema": {
              "properties": {
                "variants": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              },
              "required": [
                "variants"
              ],
              "type": "object"
            },
            "annotations": {
              "idempotentHint": false,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "analyze_spintax",
            "title": "Analyze a spintax template",
            "description": "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.",
            "inputSchema": {
              "additionalProperties": false,
              "properties": {
                "knownVariables": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
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                "locale": {
                  "description": "Locale for {plural …} arity, e.g. \"en\" (2-form), \"ru\" (3-form: ru/uk/be/sr/hr/bs) or \"ar\" (6-form). Omit for the 2-form default.",
                  "type": "string"
                },
                "template": {
                  "description": "Spintax template source (max 8192 characters). #include is disabled on this server.",
                  "maxLength": 8192,
                  "type": "string"
                }
              },
              "required": [
                "template"
              ],
              "type": "object"
            },
            "outputSchema": {
              "properties": {
                "constructs": {
                  "additionalProperties": {
                    "type": "integer"
                  },
                  "type": "object"
                },
                "defs": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                },
                "diagnostics": {
                  "items": {
                    "properties": {
                      "code": {
                        "description": "Stable machine code, e.g. plural.arity",
                        "type": "string"
                      },
                      "column": {
                        "description": "1-based",
                        "type": "integer"
                      },
                      "data": {
                        "type": "object"
                      },
                      "endColumn": {
                        "type": "integer"
                      },
                      "endLine": {
                        "type": "integer"
                      },
                      "line": {
                        "description": "1-based",
                        "type": "integer"
                      },
                      "message": {
                        "type": "string"
                      },
                      "severity": {
                        "enum": [
                          "error",
                          "warning"
                        ],
                        "type": "string"
                      }
                    },
                    "required": [
                      "severity",
                      "code",
                      "message",
                      "line",
                      "column"
                    ],
                    "type": "object"
                  },
                  "type": "array"
                },
                "includes": {
                  "items": {
                    "type": "string"
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              "type": "object"
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              "idempotentHint": true,
              "openWorldHint": false,
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            }
          },
          {
            "name": "spintax_authoring_guide",
            "title": "How to write a spintax template",
            "description": "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 agreement and case rules that decide whether the variants read as human writing, which is the hard part and the part a valid template can still get wrong; for ar, the six plural forms and their order. Returns text to read, not a template.",
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                  "description": "Language you will author in, e.g. \"en\" or \"ru\". Selects the grammar rules and the worked examples. Omit for the language-neutral rules only.",
                  "type": "string"
                },
                "variationLevel": {
                  "description": "How much markup to use. Omit to decide for yourself — the guide then states no level.",
                  "enum": [
                    "conservative",
                    "balanced",
                    "aggressive"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "outputSchema": {
              "properties": {
                "locale": {
                  "type": "string"
                },
                "promptVersion": {
                  "description": "Version of the rules TEXT (@spintax/authoring-prompt PROMPT_VERSION). Moves when the wording changes in a way that can change what a model writes.",
                  "type": "string"
                },
                "rules": {
                  "description": "The authoring rules, as text to read.",
                  "type": "string"
                }
              },
              "required": [
                "rules",
                "promptVersion"
              ],
              "type": "object"
            },
            "annotations": {
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          }
        ]
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      "name": "spintax.net MCP server",
      "note": "Indexed from the official MCP registry: facts and our own checks, not reviewed, so no score, grade or rank.",
      "packages": [
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      "reviewed": false,
      "slug": "spintax-mcp",
      "source": "the official MCP registry",
      "sourceUrl": "https://registry.modelcontextprotocol.io/v0.1/servers?search=net.spintax/mcp",
      "summary": "Write, validate, render and analyze spintax templates. Backed by @spintax/core. No auth.",
      "updatedAt": "2026-10-03T10:48:33Z",
      "url": "https://www.anchorterminal.com/tools/spintax-mcp",
      "vendor": "spintax.net",
      "vendorUrl": "https://spintax.net/docs/",
      "version": "1.2.1",
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  "markdown": "# spintax.net MCP server\n\n\u003e Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/\n\n- Kind: MCP server, by spintax.net (https://spintax.net/docs/)\n- Listed because: It's published in the registry under spintax.net, a namespace the registry only gives to whoever proves they control that domain.\n- What the official MCP registry says: Write, validate, render and analyze spintax templates. Backed by @spintax/core. No auth.\n\n## Facts\n\n- MCP registry: `net.spintax/mcp` 1.2.1\n- Endpoint: https://spintax.net/mcp (streamable HTTP)\n- Package: npm `@spintax/mcp` (stdio)\n- Website: https://spintax.net/docs/\n- npm downloads a week: 43\n- Registry entry updated: 2026-10-03\n\n## Tools\n\n- Tools it lists (4, about 1,627 tokens of context, `tools/list` without credentials over MCP 2026-07-28, checked 2026-10-04 22:25 UTC):\n  - `validate_spintax` (read-only): Static validation: returns diagnostics with severity, stable code, message and 1-based line/column. No \"error\"-severity diagnostic means the template is…\n  - `render_spintax` (read-only): Renders up to 20 variants. With a seed the output is deterministic (variant i uses seed \"\u003cseed\u003e#\u003ci\u003e\"); without one it is random. The engine is lenient:…\n  - `analyze_spintax` (read-only): Reports what the template needs and contains: refs (variables referenced), sets (#set macros, re-picked per reference), defs (#def, rolled once per render),…\n  - `spintax_authoring_guide` (read-only): 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.…\n- How its tools read to an agent (0 errors, 1 warning, 0 notes, about 1,627 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):\n  - warn TC11 analyze_spintax: 1 parameter without a description: knownVariables\n\n- JSON: https://www.anchorterminal.com/api/v1/tools/spintax-mcp.json\n- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-05",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
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    "description": "spintax.net MCP server, an MCP server by spintax.net, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Write, validate, render and analyze spintax templates. Backed by @spintax/core. No auth.",
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    "section": "indexed",
    "title": "spintax.net MCP server, indexed from the official MCP registry",
    "toc": null,
    "updated": "2026-10-05",
    "url": "https://www.anchorterminal.com/tools/spintax-mcp"
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