Overview
The maze is generated by recursive backtracking from the top-left cell: the algorithm visits neighbouring cells in random order, removes the wall into each unvisited one, and backs up when it reaches a dead end. On `easy` the result is a perfect maze, with exactly one path between any two cells. `medium` and `hard` then remove extra interior walls, up to 5% and 10% of the cell count respectively, choosing only walls that sit between two open squares in a straight line. That opens loops, so those mazes can have more than one route to the exit.
`grid` is a 2D array of `height*2+1` rows by `width*2+1` columns, read as `grid[y][x]`, where `1` is wall and `0` is open. Cells sit at odd coordinates and the even rows and columns hold the walls between them, so a 15 by 15 maze returns a 31 by 31 grid with a solid outer border. `start` and `end` use grid coordinates, not cell numbers: `start` is always `{x: 1, y: 1}` and `end` is the bottom-right cell at `{x: width*2-1, y: height*2-1}`. No opening is cut in the outer wall.
`width` and `height` default to 15 and are clamped to 5-50. A shortest route is found with breadth-first search to draw the solution image, but the path itself is not included in the response; run your own search over `grid` if you need it.
On the Free plan `html`, `image` and `solutionImage` are null. Paid plans get `html` and, with `image=true` or `solutionImage=true`, PNG renderings with signed links that expire one day after the call.
Live Test Maze Generator Skill Skill →
The tool
Once your client is connected to the VerveKit server, this appears in its tool list as MazeGeneratorSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.
{
"name": "MazeGeneratorSkill",
"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.
{
"mcpServers": {
"vervekit": {
"url": "https://api.vervekit.com/v1/mcp"
}
}
}https://api.vervekit.com/v1/mcpPer-client setup — Claude, 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. Premium arguments are accepted on every plan but only take effect on plans that include them.
| Argument | Type | Description |
|---|---|---|
widthOptional | integer | Maze width default 15 · range 5–50 |
heightOptional | integer | Maze height default 15 · range 5–50 |
difficultyOptional | string | Difficulty leveleasymediumharddefault medium |
imageOptionalPremium | boolean | Set to true to generate a downloadable maze image |
solutionImageOptionalPremium | boolean | 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 reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.
{
"status": "ok",
"error": null,
"data": {
"width": 15,
"height": 15,
"difficulty": "medium",
"start": {
"x": 1,
"y": 1
},
"end": {
"x": 29,
"y": 29
},
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"html": "<html><head><title>Maze Puzzle</title><style>body {font-family: Arial, sans-serif; padding: 20px; text-align: center;}h1 {color: #333;}.maze {display: inline-grid; grid-template-columns: repeat(31, 19px); gap: 0; border: 2px solid #333;}.cell {width: 19px; height: 19px;}.wall {background: #333;}.path {background: #fff;}.start {background: #4CAF50;}.end {background: #F44336;}</style></head><body><h1>Maze</h1><p>Find your way from green to red!</p><div class='maze'><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell start'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell 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wall'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell wall'></div><div class='cell path'></div><div class='cell path'></div><div class='cell path'></div><div class='cell 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"image": {
"imageName": "24ed4b60-28c5-4aa9-9d18-0dec8c2df627_puzzle.png",
"format": ".png",
"downloadURL": "https://storage.googleapis.com/apiverve/APIData/maze/24ed4b60-28c5-4aa9-9d18-0dec8c2df627_puzzle.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010378&Signature=bh3WmsCSjfVyE003mAyBjbWf07n4%2FjfI48d%2FpJpNAQEimQ113b%2F1%2FcovTUBbbMBOMy8ehlNHL9TDUcg7JNkfbIZL9ZePI0ioWQygbZro6ypdiHv0url3Iwh46nQbp6PqQ8KVUYF2%2FE7vCVEji15cJDK%2F5NJ61Y40ICPhbDGuxRBoDpvBuYS5mIYaOgrteLQpfYUL5qlSE%2F34ifcA8PTxfPjTNG4ixNmRELw6xqtcQs7RMFVTui6bm9eEA6a8D%2Br7h7NhUEnJv7kuJJVY1ieHKxg6yTJIWZUd%2FVIXrPRTJF3lgpgJFubXzAs5x01CVxEGl%2B2cUiG4u4gB%2F4ILITSJsw%3D%3D",
"expires": 1766010378634
},
"solutionImage": {
"imageName": "7d1c4b60-c228-47d1-9f8a-d8141d087cdc_solution.png",
"format": ".png",
"downloadURL": "https://storage.googleapis.com/apiverve/APIData/maze/7d1c4b60-c228-47d1-9f8a-d8141d087cdc_solution.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010378&Signature=H7m2zOphZK6elU3niJ4BSJD%2FABqi%2BZ1cPKUfG8QJbd1fY3nyhVdD5wFAcGzvCN76kjtVg%2BwBlbIDr3QG6FhrBhll9eY2t3UnCioJQ6lqQZYRIaB%2FmURSUbeLEIg2PZvODwf3qgZmTSsH8kIiLynIgr3vvvJ%2FBzJFKt56OUZLo2eynqLVWz%2FiQbUCcZ%2F5C6auROc2nWvhoPgV1xAwKEYlNCyFnHXbtTbBiBMqmk7n7SXg3l3ijQGuop8WYWPoAdI0%2FqQcREz5HwTdFsOdsv7sfh2TusSpPzNUycR%2F%2B6KlwWduiB0TKYAZSrmn5GYsDHxF%2BxjgNT5xaT02%2FFvelOb5mw%3D%3D",
"expires": 1766010378983
}
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
width | number | 15 | Width of the generated maze in cells |
height | number | 15 | Height of the generated maze in cells |
difficulty | string | medium | Difficulty level of the maze puzzle |
start | object | {…} | The grid cell the maze is entered from |
start.x | number | 1 | X coordinate of the maze starting position |
start.y | number | 1 | Y coordinate of the maze starting position |
end | object | {…} | The grid cell that exits the maze |
end.x | number | 29 | X coordinate of the maze ending position |
end.y | number | 29 | Y coordinate of the maze ending position |
grid | array | list of lists | 2D array representing maze walls and paths |
htmlPremium | string | <html><head><title>Maze Puzzle</title><style>body {font-family: Arial, sans-serif; padding: 20px; te… | HTML representation of maze with styling and CSS |
imagePremium | object | {…} | The rendered puzzle image, present only when image=true is requested |
image.imageNamePremium | string | 24ed4b60-28c5-4aa9-9d18-0dec8c2df627_puzzle.png | Unique filename for generated puzzle image |
image.formatPremium | string | .png | Image file format extension for puzzle |
image.downloadURLPremium | string | https://storage.googleapis.com/apiverve/APIData/maze/24ed4b60-28c5-4aa9-9d18-0dec8c2df627_puzzle.png… | Signed URL to download maze puzzle image |
image.expiresPremium | number | 1766010378634 | Expiration timestamp for puzzle image URL |
solutionImagePremium | object | {…} | The rendered solution image, present only when solutionImage=true is requested |
solutionImage.imageNamePremium | string | 7d1c4b60-c228-47d1-9f8a-d8141d087cdc_solution.png | Unique filename for generated solution image |
solutionImage.formatPremium | string | .png | Image file format extension for solution |
solutionImage.downloadURLPremium | string | https://storage.googleapis.com/apiverve/APIData/maze/7d1c4b60-c228-47d1-9f8a-d8141d087cdc_solution.p… | Signed URL to download maze solution image |
solutionImage.expiresPremium | number | 1766010378983 | Expiration timestamp for solution image URL |
Failure modes
Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.
| Status | What it means |
|---|---|
400 / 422 | The arguments did not validate. The message names the offending one. |
401 | The OAuth session is invalid or expired — reconnect the server. |
403 | Blocked by a key restriction or an IP allow-list. Never a bad identity. |
404 | This skill is not part of VerveKit. Check the catalog. |
429 | Out of credits, or a brief rate limit. The message tells them apart. |
A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.
Use cases
- Printable Activities
- Create maze worksheets for children and educational materials
- Game Development
- Generate procedural mazes for video games
- Brain Training
- Develop spatial reasoning and problem-solving exercises
- Entertainment
- Create maze puzzles for activity books and party games
Other ways to use Maze Generator Skill
Set up Maze 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 →
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