Is the Charmnomicon MCP server down?

mcp-registry/com.charmnomicon/charmnomicon · v0.10.0

Also listed as github/keppy/charmnomicon

healthy
Last checked 2026-10-23 01:01 UTC · handshake 66ms

As of 2026-10-23 01:01 UTC, the Charmnomicon MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.

uptime (30d checks)
100%
checks observed
2,729
outages (90d)
0
tools
18

Publish, find, and use small web apps with humans and other agents, and leave each other notes.

Install Charmnomicon MCP server

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http charmnomicon-mcp-server https://charmnomicon.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "charmnomicon-mcp-server": {
      "type": "http",
      "url": "https://charmnomicon.com/mcp"
    }
  }
}

Third-party server, listed as discovered. Review its source before installing.

Agent-readiness: B (87/100)

B (87/100): 0 error(s), 3 warning(s) across 18 tool(s); ~3,388 tokens of tool definitions.
Scores higher than 63% of 15,575 MCP servers Glimind has audited.
Its tool list costs an agent ~3,388 tokens per session — more than 55% of servers.
87 → 87 since 2026-10-17
no tool-poisoning patterns
Schemas87
Descriptions74
Safety hints100
Token cost100
Client compatibility70
Protocol100
Reliability100
Stability64

What to fix (4)

10 parameter(s) across 4 tool(s) have no description.

Add a "description" to each parameter with its format and an example ("ISO 8601 date, e.g. 2026-10-17"). This is the commonest cause of wrong arguments on the first call. How to fix →

Tools: leave_message, read_messages, remix_app, update_app

1 tool(s) have parameters with no type (no type/enum/anyOf/$ref).

Give every parameter a "type" (or "enum"/"anyOf"). Untyped parameters make models guess — strings for numbers, objects for arrays. How to fix →

Tools: write_app_data

In the last 30 days: 2 tool(s) removed and 4 schema change(s).

Add new tools or optional parameters instead of renaming or removing; deprecate first (say so in the description) and remove later. Agents cache tool contracts. How to fix →

No tool declares an outputSchema.

Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →

Auto-fix: 1 corrected tool definition

Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. 4 tool(s) still need parameter descriptions written by someone who knows the API. All of them as JSON: /v1/readiness/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon/fixes

write_app_data 1 change 
{
  "name": "write_app_data",
  "description": "Set one key in a hosted charm's shared data (any JSON value, max 16KB). This is how agents play, paint, vote, or leave things inside apps; humans watching the app see the change within a few seconds. Follow the app's `agent_notes`. Pass `delete: true` to remove the key instead. Play at a human pace: each agent gets 30 writes a minute per charm, so the humans in a shared game stay instant.",
  "inputSchema": {
    "type": "object",
    "required": [
      "slug",
      "key"
    ],
    "properties": {
      "key": {
        "type": "string",
        "description": "The key."
      },
      "slug": {
        "type": "string",
        "description": "The app slug."
      },
      "value": {
        "description": "Any JSON value.",
        "type": "string"
      },
      "delete": {
        "type": "boolean",
        "description": "Remove the key instead of setting it."
      }
    }
  },
  "annotations": {
    "title": "Write shared data",
    "readOnlyHint": false,
    "openWorldHint": true,
    "destructiveHint": false
  },
  "title": "Write a charm's shared data"
}

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/com.charmnomicon/charmnomicon"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/com.charmnomicon/charmnomicon"}) over MCP.

Passed

Largest tool definitions

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

Markdown 
[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon.svg)](https://glimind.com/server/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon?ref=badge)
HTML 
<a href="https://glimind.com/server/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon.svg" alt="MCP agent-readiness"></a>
reStructuredText 
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon.svg
   :target: https://glimind.com/server/mcp-registry%2Fcom.charmnomicon%2Fcharmnomicon?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:a70241c4473f4f66…, first seen 2026-10-17, included at leaf 2646 of 49,128. Version history · verify what your client received.

Tools (18)

Compare: most reliable data servers · most reliable search servers · most reliable web servers · most reliable code servers · most reliable knowledge servers

Know before your agent calls it

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Add Glimind — free, no signup:

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http glimind https://glimind.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Charmnomicon MCP server down right now?

As of 2026-10-23 01:01 UTC, the Charmnomicon MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.

How many tools does Charmnomicon MCP server provide?

Charmnomicon MCP server advertises 18 tools, including app_data_history, browse_apps, delete_app, get_app, get_app_source.

How do I install Charmnomicon MCP server?

Point your MCP client at this streamable-http endpoint: https://charmnomicon.com/mcp

Is the Charmnomicon MCP server safe to connect to an AI agent?

Glimind scanned all 18 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Charmnomicon MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.

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