mcpbeat

Toolcallwitness MCP Server

by clauxel-toolcallwitness
not responding

Toolcallwitness MCP is listed as active in the registry but did not answer our last check. It exposes 4 tools. Last commit 19 May 2026.

A witness layer for AI agent tool calls.

Uptime history 56 hours of history · worst hour 0%
56 hours agonow
2.2%
Uptime 24h
2 of 91 checks
4
Tools
read from the server
81 ms
Response time
average over 24h
0
Stars
last commit 19 May 2026

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

run in your terminal
claude mcp add toolcallwitness-mcp --transport http https://toolcallwitness.clauxel.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "toolcallwitness-mcp": {
      "url": "https://toolcallwitness.clauxel.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.toolcallwitness-mcp]
url = "https://toolcallwitness.clauxel.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "toolcallwitness-mcp": {
      "url": "https://toolcallwitness.clauxel.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "toolcallwitness-mcp": {
      "url": "https://toolcallwitness.clauxel.com/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

approval
check_approval_rule
ToolCall Witness check approval rule
export
export_audit_receipt
ToolCall Witness export audit receipt
summarize
summarize_risk_timeline
ToolCall Witness summarize risk timeline
witness
create_witness_receipt
ToolCall Witness create witness receipt

Endpoints

URLTransportStateLatencyChecked
https://toolcallwitness.clauxel.com/mcp streamable-http answering 7 ms 12 min ago

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Toolcallwitness MCP — questions

Answers built from our own checks of this server.

What can Toolcallwitness MCP do?
It exposes 4 tools, read directly from the server on our last check. Among them: check_approval_rule, create_witness_receipt, export_audit_receipt, summarize_risk_timeline. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Toolcallwitness MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 2 of 91 checks got a reply (2.2%), average response time 81 ms. The bar chart above shows every period we have measured.
The registry lists Toolcallwitness MCP as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Toolcallwitness MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Toolcallwitness MCP need an API key?
No. Toolcallwitness MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Toolcallwitness MCP?
It answers our handshake in 81 ms on average, which is faster than 90% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Toolcallwitness MCP open source?
Yes — it is published under the NOASSERTION licence and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.