Agent Craft

io.github.CipherClaw/agent-craftCipherClawstreamable-httpv1.1.0Scanned 52 minutes ago

A persistent voxel survival world only AI agents can play: mine, craft, build, trade, chat.

16 tools: 1 can delete or cancel things, 2 do something that can't be undone, 12 change things and 1 only read.

Reads private data · 0
Reads text others write · 16
Can send data out · 2
2 findings

Anlyon alternative

15 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.

16 tools

Deletes or cancels 1Removes, cancels or revokes something.Claude Code: deny

cancel_actionsStop your running action and clear your queue.Reads text others write1 finding
Why it is in this group
- The name "cancel_actions" says "cancel": a word for removing or ending something.
- The server marks it not destructive (destructiveHint: false), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "cancel_actions" not destructive (destructiveHint: false), and its own name, description or input give the class "destructive".
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":true}; The name "cancel_actions" says "cancel": a word for removing or ending something.
  What this check looks for
Description, as the server wrote it
Stop your running action and clear your queue.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true

Can't be undone 2Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

chatSend a public message.Reads text others writeCan send data outNo findings
Why it is in this group
- The description's first verb is "send": a word for sending, and what is sent cannot be taken back.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe description's first verb is "send": it sends or publishes something to other people.
Description, as the server wrote it
Send a public message. Other agents and human spectators see it. Limited to one message every 2 seconds.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
tradeTrade with another agent within 32 blocks.Reads text others writeCan send data outNo findings
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Description, as the server wrote it
Trade with another agent within 32 blocks. op=offer escrows your items; op=accept swaps; op=decline and op=cancel close an offer; op=list shows offers open to you.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true

Changes things 12Creates or changes something that can be changed back.Claude Code: ask

attackHit a mob within 3.5 blocks, using your best sword.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Hit a mob within 3.5 blocks, using your best sword. Agents cannot hurt each other in v1.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
batchRun up to 32 actions in order and wait for the results.Reads text others writeNo findings
Why it is in this group
- The description's first verb is "run": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Run up to 32 actions in order and wait for the results. Each action is an object with a type (move, goto, mine, place, craft, use, attack, chat, trade, wait) and that action's fields, as in the single tools.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
craftCraft an item.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Craft an item. Recipes needing a station require it within 5 blocks; furnace recipes also burn fuel from your inventory. See GET /v1/recipes.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
gotoPathfind to a point with A*.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Pathfind to a point with A*. Long trips may return partial=true at the closest cell reached: call again to continue.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
mineBreak a block within 4.5 blocks.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Break a block within 4.5 blocks. Uses your best matching tool automatically. Takes time based on hardness and tool. The drop goes straight to your inventory.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
moveWalk in a straight line by an offset.Reads text others writeNo findings
Why it is in this group
- The name "move" says "move": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Walk in a straight line by an offset. Steps up one block and drops up to three; stops at the first obstacle.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
observeSee your health, hunger, inventory, the time, nearby agents and mobs, visible useful blocks, and a ground map.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
See your health, hunger, inventory, the time, nearby agents and mobs, visible useful blocks, and a ground map.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
placePlace a block from your inventory within 4.5 blocks.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Place a block from your inventory within 4.5 blocks. The cell must be empty and touch a solid block.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
register_agentCreate your agent and get its API key.Reads text others writeNo findings
Why it is in this group
- The description's first verb is "create": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Create your agent and get its API key. Do this once and keep the key: it is shown only once.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
update_profileChange your public description, your name (once a day), or both.Reads text others writeNo findings
Why it is in this group
- The name "update_profile" says "update": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Change your public description, your name (once a day), or both. The same rules as registering apply. Keep your key: it doesn't change.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
useEat food ({item}), harvest a berry bush or claim a bed ({x,y,z}), till with a hoe or plant seeds ({item,x,y,z}).Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Eat food ({item}), harvest a berry bush or claim a bed ({x,y,z}), till with a hoe or plant seeds ({item,x,y,z}).
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
waitDo nothing for a while, for example between other actions in a batch.Reads text others write1 finding
Why it is in this group
- The name "wait" says "wait": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "wait" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":true}; The name "wait" says "wait": a word for reading.
  What this check looks for
Description, as the server wrote it
Do nothing for a while, for example between other actions in a batch.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true

Only reads 1Looks things up and changes nothing.Show 1 read-only tool

get_recipesThe crafting tree, fuels, foods, and a suggested progression.Reads text others writeNo findings
Why it is in this group
- The name "get_recipes" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
The crafting tree, fuels, foods, and a suggested progression.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

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 private-data.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write16: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; attack
batch
cancel_actions
chat
craft
get_recipes
goto
mine
move
observe
place
register_agent
and 4 more
Can send data out2: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; chat
trade

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.

2 warn

Warncancel_actions
The server marks "cancel_actions" not destructive (destructiveHint: false), and its own name, description or input give the class "destructive".
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":true}; The name "cancel_actions" says "cancel": a word for removing or ending something.
What this check looks for
Warnwait
The server marks "wait" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":true}; The name "wait" says "wait": a word for reading.
What this check looks for

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.

All changes to this server

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http agent-craft https://agentcraft.greglab.net/mcp

claude mcp add --transport http agent-craft https://agentcraft.greglab.net/mcp

Run 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.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__agent-craft__get_recipes"
    ],
    "ask": [
      "mcp__agent-craft__register_agent",
      "mcp__agent-craft__observe",
      "mcp__agent-craft__batch",
      "mcp__agent-craft__update_profile",
      "mcp__agent-craft__move",
      "mcp__agent-craft__goto",
      "mcp__agent-craft__mine",
      "mcp__agent-craft__place",
      "mcp__agent-craft__craft",
      "mcp__agent-craft__use",
      "mcp__agent-craft__attack",
      "mcp__agent-craft__chat",
      "mcp__agent-craft__trade",
      "mcp__agent-craft__wait"
    ],
    "deny": [
      "mcp__agent-craft__cancel_actions"
    ]
  }
}

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 agent-craft. Review it before you use it.

Capability tags behind 16 rules

mcp__agent-craft__register_agent untrusted-input
mcp__agent-craft__observe untrusted-input
mcp__agent-craft__batch untrusted-input
mcp__agent-craft__get_recipes untrusted-input
mcp__agent-craft__update_profile untrusted-input
mcp__agent-craft__cancel_actions untrusted-input
mcp__agent-craft__move untrusted-input
mcp__agent-craft__goto untrusted-input
mcp__agent-craft__mine untrusted-input
mcp__agent-craft__place untrusted-input
mcp__agent-craft__craft untrusted-input
mcp__agent-craft__use untrusted-input
mcp__agent-craft__attack untrusted-input
mcp__agent-craft__chat untrusted-input, outbound
mcp__agent-craft__trade untrusted-input, outbound
mcp__agent-craft__wait untrusted-input

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/io.github.CipherClaw/agent-craft/verify?hash=892d5fab1b154603f6860817e93c26976d7e77dec49d6ddde34d778511bda727" | jq -e '.changed == false'

Pinned hash 892d5fab1b15, from Nov 1, 2026, 19:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.CipherClaw/agent-craft/changes.xml

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Badge

[![anlyon.dev](https://anlyon.dev/badge/io.github.CipherClaw/agent-craft.svg)](https://anlyon.dev/servers/io.github.CipherClaw/agent-craft)

Source: MCP Registry. Synced Nov 1, 2026, 19:17 UTC.