MCP MeasureMCP Measure

index observed

Doppelreim Rhymes

Multisyllabic, vowel and classic rhymes plus rhyming lines in 56 languages for lyrics and poems.

Should I use this

Quality & Safety

A
Description quality
90%
Schema completeness
100%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~997Tokens (tool definitions)
~4.2 KBTypical response size
Moderate attention impact (0.78% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "rhymes": {
      "url": "https://api.double-rhyme.com/mcp"
    }
  }
}

Remote endpoints

https://api.double-rhyme.com/mcpstreamable-http

What it can do

Tool inventory

Tools (2)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢find_rhymes(word, language, type, vocabulary, limit)

Find rhymes for a word or short phrase. type "double" = multisyllabic rhymes (best for rap and poetry), "classic" = perfect end rhymes grouped by matching syllables, "vowel" = assonance (same vowel sounds). 50+ languages; strongest results come first.

Input Schema

{
  "type": "object",
  "properties": {
    "word": {
      "type": "string",
      "minLength": 1,
      "maxLength": 80,
      "description": "Word or short phrase to rhyme on, e.g. \"verloren\" or \"heart\"."
    },
    "language": {
      "default": "en",
      "description": "Language code. Supported: af, ar, az, bg, bs, ca, cs, cy, da, de, el, en-us, eo, es, es_lat, et, eu, fa, fi, fr, fr_be, fr_ch, hi, hr, hu, hy, hy_arevmda, id, it, ka, kn, ko, la, lt, lv, mk, ml, ms, nl, no, pl, pt, pt_br, ro, ru, sk, sl, sq, sr, sv, ta, te, tr, ur, vi, zh (\"en\" = \"en-us\").",
      "type": "string",
      "minLength": 2,
      "maxLength": 12
    },
    "type": {
      "default": "double",
      "description": "Kind of rhyme.",
      "type": "string",
      "enum": [
        "double",
        "classic",
        "vowel"
      ]
    },
    "vocabulary": {
      "default": "general",
      "description": "\"rap\" draws from rap lyrics (de and en only), \"general\" from general language.",
      "type": "string",
      "enum": [
        "general",
        "rap"
      ]
    },
    "limit": {
      "default": 30,
      "description": "Maximum results per group.",
      "type": "integer",
      "minimum": 1,
      "maximum": 50
    }
  },
  "required": [
    "word"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Output Schema

{
  "type": "object",
  "properties": {
    "word": {
      "type": "string"
    },
    "language": {
      "type": "string"
    },
    "type": {
      "type": "string"
    },
    "vocabulary": {
      "type": "string"
    },
    "groups": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "title": {
            "type": [
              "string",
              "null"
            ]
          },
          "items": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        },
        "required": [
          "title",
          "items"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "word",
    "language",
    "type",
    "vocabulary",
    "groups"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false
}
🟢find_rhyming_lines(word, language, vocabulary, limit)

Find real lines (lyrics, proverbs, sayings) that end with a rhyme on the given word. Useful as inspiration for the next line of a verse.

Input Schema

{
  "type": "object",
  "properties": {
    "word": {
      "type": "string",
      "minLength": 1,
      "maxLength": 80,
      "description": "Word the lines should rhyme with."
    },
    "language": {
      "default": "en",
      "description": "Language code. Supported: af, ar, az, bg, bs, ca, cs, cy, da, de, el, en-us, eo, es, es_lat, et, eu, fa, fi, fr, fr_be, fr_ch, hi, hr, hu, hy, hy_arevmda, id, it, ka, kn, ko, la, lt, lv, mk, ml, ms, nl, no, pl, pt, pt_br, ro, ru, sk, sl, sq, sr, sv, ta, te, tr, ur, vi, zh (\"en\" = \"en-us\").",
      "type": "string",
      "minLength": 2,
      "maxLength": 12
    },
    "vocabulary": {
      "default": "general",
      "description": "\"rap\" uses rap lyrics (de and en only), \"general\" uses proverbs and general texts.",
      "type": "string",
      "enum": [
        "general",
        "rap"
      ]
    },
    "limit": {
      "default": 15,
      "description": "Maximum number of lines.",
      "type": "integer",
      "minimum": 1,
      "maximum": 50
    }
  },
  "required": [
    "word"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Output Schema

{
  "type": "object",
  "properties": {
    "word": {
      "type": "string"
    },
    "language": {
      "type": "string"
    },
    "type": {
      "type": "string"
    },
    "vocabulary": {
      "type": "string"
    },
    "groups": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "title": {
            "type": [
              "string",
              "null"
            ]
          },
          "items": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        },
        "required": [
          "title",
          "items"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "word",
    "language",
    "type",
    "vocabulary",
    "groups"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false
}

Community

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Evidence

Recent observations

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