Crossword Generator Skill

OnlineCredit Usage:2 per callTool:CrosswordGeneratorSkill

The tool

The API generates grids using word intersection algorithms with categories like animals, food, sports, science, and geography.

Once your client is connected to the VerveKit MCP server, this appears in its tool list as CrosswordGeneratorSkill. It is read-only and open-world: it fetches, it never mutates anything on your side, so most clients will call it without asking you to confirm.

Tool call

{
  "name": "CrosswordGeneratorSkill",
  "arguments": {}
}

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth — the client opens a browser once and there is no key to paste into a config file.

Client config

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

Endpoint

https://api.vervekit.com/v1/mcp

Per-client setup — Claude Desktop, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made.

Argument	Type	Example	Description
`size`	string	`medium`	Grid size: small, medium, large
`theme`	string	`animals`	Theme: random, animals, food, sports, science, geography
`difficulty`	string	`medium`	Difficulty: easy, medium, hard
`image`Premium	boolean	`true`	Set to true to generate a downloadable puzzle image
`solutionImage`Premium	boolean	`true`	Set to true to generate a downloadable solution image

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client can read fields without parsing prose. status is "ok" on success and error is null; a null field means the value wasn't available for that input, not that the call failed.

Result

{
  "status": "ok",
  "error": null,
  "data": {
    "size": 15,
    "difficulty": "medium",
    "theme": "animals",
    "grid": [
      [
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        null
      ],
      [
        null,
        "T",
        "I",
        "G",
        "E",
        "R",
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        "D",
        null
      ],
      [
        null,
        null,
        null,
        "I",
        null,
        null,
        null,
        null,
        null,
        null,
        "R",
        null,
        null,
        "E",
        null
      ],
      [

Fields

Fields marked Premium need a paid plan. On a plan without them the key is absent rather than wrong, so a model never reasons over a substituted value.

Field	Type	Example	Description
`size`	number	`15`	Grid dimensions (size x size)
`difficulty`	string	`medium`	Selected difficulty level for puzzle
`theme`	string	`animals`	Theme category used for puzzle
`grid`	array[15]	`list of rows`	2D array representing puzzle grid layout
`grid.0.0`	object	`null`
`grid.0.1`	object	`null`
`grid.0.2`	object	`null`
`grid.0.3`	object	`null`
`grid.0.4`	object	`null`
`grid.0.5`	object	`null`
`grid.0.6`	object	`null`
`grid.0.7`	object	`null`
`grid.0.8`	object	`null`
`grid.0.9`	object	`null`
`grid.0.10`	object	`null`
`grid.0.11`	object	`null`
`grid.0.12`	object	`null`
`grid.0.13`	object	`null`
`grid.0.14`	object	`null`
`across`	array[7]	`list of rows`	Array of across clues with number and answer
`across.0.number`	number	`1`
`across.0.clue`	string	`Striped big cat`
`across.0.answer`	string	`TIGER`
`across.0.length`	number	`5`
`down`	array[6]	`list of rows`	Array of down clues with number and answer
`down.0.number`	number	`2`
`down.0.clue`	string	`Tallest land animal`
`down.0.answer`	string	`GIRAFFE`
`down.0.length`	number	`7`
`wordCount`	number	`13`	Total number of words in puzzle
`html`Premium	string	<html><head><title>Crossword Puzzle</title><style>body {font-family: Arial, sans-serif; padding: 20px;}h1 {text-align: center; color: #333;}.container {display: flex; gap: 30px; flex-wrap: wrap; justify-content: center;}.grid {display: grid; grid-template-columns: repeat(15, 30px); gap: 1px; background: #333; border: 2px solid #333;}.cell {width: 30px; height: 30px; background: #fff; display: flex; align-items: center; justify-content: center; font-weight: bold; position: relative;}.cell.black {background: #333;}.cell-number {position: absolute; top: 1px; left: 2px; font-size: 8px; font-weight: normal;}.clues {max-width: 300px;}.clue-section h3 {margin-bottom: 10px; color: #333;}.clue {margin: 5px 0; font-size: 14px;}.clue-number {font-weight: bold; margin-right: 5px;}</style></head><body><h1>Crossword</h1><div class='container'><div class='grid'><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>1</span></div><div class='cell'></div><div class='cell'><span class='cell-number'>2</span></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>3</span></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>4</span></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>5</span></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>6</span></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>7</span></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>8</span></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>9</span></div><div class='cell'><span class='cell-number'>10</span></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>11</span></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>12</span></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell'><span class='cell-number'>13</span></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div><div class='cell black'></div></div><div class='clues'><div class='clue-section'><h3>Across</h3><div class='clue'><span class='clue-number'>1.</span>Striped big cat (5)</div><div class='clue'><span class='clue-number'>5.</span>Striped horse-like animal (5)</div><div class='clue'><span class='clue-number'>7.</span>King of the jungle (4)</div><div class='clue'><span class='clue-number'>8.</span>Large furry mammal (4)</div><div class='clue'><span class='clue-number'>9.</span>Wild canine that howls (4)</div><div class='clue'><span class='clue-number'>12.</span>Large gray mammal with trunk (8)</div><div class='clue'><span class='clue-number'>13.</span>Black and white bear from China (5)</div></div><div class='clue-section'><h3>Down</h3><div class='clue'><span class='clue-number'>2.</span>Tallest land animal (7)</div><div class='clue'><span class='clue-number'>3.</span>Forest animal with antlers (4)</div><div class='clue'><span class='clue-number'>4.</span>Hopping animal with long ears (6)</div><div class='clue'><span class='clue-number'>6.</span>Intelligent marine mammal (7)</div><div class='clue'><span class='clue-number'>10.</span>Nocturnal bird of prey (3)</div><div class='clue'><span class='clue-number'>11.</span>Flightless bird from Antarctica (7)</div></div></div></div></body></html>	Rendered HTML representation of puzzle
`image`Premium	object	`{…}`	Puzzle image data with download URL
`image.imageName`	string	`1838121c-9f76-44f8-b197-02e1db5987d5_puzzle.png`	Filename of puzzle image
`image.format`	string	`.png`	Image format extension
`image.downloadURL`	string	https://storage.googleapis.com/apiverve/APIData/crossword/1838121c-9f76-44f8-b197-02e1db5987d5_puzzle.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010128&Signature=OYZsWA9QiINhqgC%2BSZSZpict%2B93ryyxvzUSIohJF%2BMGZ7SLGLA2Q47aVnwzLFzr8ZOK7IUQN4DZrAMh%2B0T8VqTMCLf76tj8BKLB1Qwo4IbMkkat1cbG6AFb44ungHGmCpwjwjwDYMwrDgI8%2Bg8dyKzwMZZmQHf5Q1hYNsy084Q%2BBTLAx6KUL%2FIZdw5pp0Rnxiq8aHdPrm%2Fbq2NU1UuMUDg8uBc8TR%2FHYN%2FOljXeyhv6Nbf4FXJCPLTMDdLDqblecNKhfQ67Dc4FdPD%2BF1IPN2A5G9VfkPb5v5KA5iiM8RF4zr8kHW%2FMlncbKSynvLp7QjtL9qZlSHn3%2Bn0pJpf%2FEUA%3D%3D	URL to download puzzle image
`image.expires`	number	`1766010128609`	Timestamp when image link expires
`solutionImage`Premium	object	`{…}`	Solution image data with download URL
`solutionImage.imageName`	string	`3ec675cd-0e16-4e50-87f4-8f4192abea5b_solution.png`	Filename of solution image
`solutionImage.format`	string	`.png`	Solution image format extension
`solutionImage.downloadURL`	string	https://storage.googleapis.com/apiverve/APIData/crossword/3ec675cd-0e16-4e50-87f4-8f4192abea5b_solution.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010129&Signature=L07115whFCEM3yuFDBILq7r4v26RoSYQzv81S7bwL8yJFcHRjHcKsqUhI6UWaDo4LPKfAjmk%2Fs1gN3z33ma12GE2fJYkp4mxD40EhyY%2BDjR3ja7m%2Fj20Zenu%2FdcOukkS9DCfGiYEa%2BxQDT4I2gjDVORhe7JeDuLeKCFtbsiLZFIlWNZoq6K7YbNc4BWDnwcqviJXSB%2FvWa1FMhXpQFoTIeJVvUCcdOGGVR6Vdl%2BPxwWN%2FAjXcsvNYbIhtyEZHaXQuXxI3zmCMg0eI770cVuhs7rm8JVdN7gYtojprJxTYl9nRx793SRuLcFfJD%2BRhx2dBmpMtXkcZFmv4%2Bz74oZY8Q%3D%3D	URL to download solution image
`solutionImage.expires`	number	`1766010129033`	Timestamp when solution link expires

Failure modes

Errors come back as tool errors with a sentence the model can act on, not a bare status code.

Status	What it means
`400 / 422`	The arguments didn't validate. The message names the offending one.
`401`	The OAuth session is invalid or expired — reconnect the server.
`403`	Out of credits. Not a bad key — the month's allowance is spent.
`404`	This skill isn't part of VerveKit. Check the catalog.
`429`	Brief rate limit. Retrying after a moment succeeds.

Other ways to use Crossword Generator Skill

Set up Crossword Generator Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

Call it as a REST APIOne HTTPS endpoint and an X-API-Key header, with SDKs for Node, Python and .NET.APIVerve →Reference →

Frequently asked questions

Do I have to tell the agent to use CrosswordGeneratorSkill?

No. The tool's name and description are in the model's context once the server is connected, so it selects the tool when the question calls for it. Naming it explicitly works too and is useful when you want to force the call.

Does connecting the server expose every tool at once?

Yes — one connection lists the whole VerveKit catalog. Clients with a tool budget can usually filter the list; the credit cost is per call, so an unused tool costs nothing.

What does a call cost?

2 credits each time the tool actually runs. A model that reasons about the tool without calling it costs nothing.

Is there a REST version of this?

Yes — the same source is available as a plain HTTPS endpoint on APIVerve, linked above. Same data, same credits, same account.

What's Next?

Continue your journey with these recommended resources

Browse all skills

The full catalog for this door

Connect a client

Claude, Cursor, VS Code and the rest

Plans & credits

What a call costs and how usage resets

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