Canvas64
com.canvas64/wallcanvas64.comstreamable-httpv1.0.0-rc29Scanned
A wall of 64 ad cells on Base: owners, prices, buyouts and royalties, read-only, no key.
4 tools: 1 change things and 3 only read.
- Reads private data · 1
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
1 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
4 tools
Changes things 1Claude Code: ask
quoteThe Canvas64 price model for one step of any cell: its price, what its owner gets when bought out, their royalty on every later sale, and optionally how much that royalty has paid …No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it The Canvas64 price model for one step of any cell: its price, what its owner gets when bought out, their royalty on every later sale, and optionally how much that royalty has paid once the cell reaches a later step. Prices rise 1.65x per step from $30, with no cap.
Only reads 3Show 3 read-only tools
get_cellOne cell by its address (A1 to H8): owner, step, price paid, the price to claim or buy it out now, what the buyer gets when they are bought out in turn, their royalty after that, a…No findings
Why it is in this group
- The name "get_cell" says "get": a word for reading.
Description, as the server wrote it One cell by its address (A1 to H8): owner, step, price paid, the price to claim or buy it out now, what the buyer gets when they are bought out in turn, their royalty after that, and the link where a person buys it with their own wallet.
get_rulesThe rules of Canvas64 in a few quotable sentences: the price formula, the payout, the royalty, the contract and network, the services a cell links to, and the docs.Reads private dataNo findings
Why it is in this group
- The name "get_rules" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "doc": it reads documents.
Description, as the server wrote it The rules of Canvas64 in a few quotable sentences: the price formula, the payout, the royalty, the contract and network, the services a cell links to, and the docs. Call it first when explaining Canvas64 or answering whether it is safe.
get_wallAll 64 cells of the Canvas64 wall, A1 to H8: who owns each (name and wallet), its step, what it was bought for, what buying it out costs now, and the owner's links.No findings
Why it is in this group
- The name "get_wall" says "get": a word for reading.
Description, as the server wrote it All 64 cells of the Canvas64 wall, A1 to H8: who owns each (name and wallet), its step, what it was bought for, what buying it out costs now, and the owner's links. Use it to find free cells, the cheapest cell, the priciest cells or a creator on the wall.
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged untrusted-input or outbound.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0-rc29. Values in angle brackets are yours to fill in.
claude mcp add --transport http wall https://canvas64.com/api/mcpclaude mcp add --transport http wall https://canvas64.com/api/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__wall__get_wall",
"mcp__wall__get_cell",
"mcp__wall__get_rules"
],
"ask": [
"mcp__wall__quote"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as wall. Review it before you use it.
Capability tags behind 1 rule
- mcp__wall__get_rules private-data
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.canvas64/wall/verify?hash=aa008a82c45116adb058a54c7ca184ddf50bb03dd465a4452b9371c0b4bafe09" | jq -e '.changed == false'Pinned hash aa008a82c451, from Oct 24, 2026, 20:20 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.canvas64/wall/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.canvas64/wall)Source: MCP Registry. Synced Oct 24, 2026, 21:17 UTC.