Witness MCP server

Witness is an MCP server with 1 tool an agent can call, among them contract_witness. It answers at https://witness-contractwitness-production.witness-test.workers.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.

Production proofs for breaking JSON Schema/MCP changes; UNKNOWN/NO_WITNESS_FOUND not compatible.

Description as the publisher wrote it.

The 1 tool Witness offers

Add Witness to your AI client

Every block below points at https://witness-contractwitness-production.witness-test.workers.dev/mcp. Pick your client and copy.

claude mcp add --transport http witness https://witness-contractwitness-production.witness-test.workers.dev/mcp

{
  "mcpServers": {
    "witness": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://witness-contractwitness-production.witness-test.workers.dev/mcp"]
    }
  }
}

{
  "mcpServers": {
    "witness": {
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "servers": {
    "witness": {
      "type": "http",
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "context_servers": {
    "witness": {
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "witness": {
      "serverUrl": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "witness": {
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

name: Witness
version: 0.0.1
schema: v1
mcpServers:
  - name: Witness
    type: streamable-http
    url: https://witness-contractwitness-production.witness-test.workers.dev/mcp

{
  "mcpServers": {
    "witness": {
      "httpUrl": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "witness": {
      "type": "http",
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "witness": {
      "url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
    }
  }
}

goose://extension?url=https%3A%2F%2Fwitness-contractwitness-production.witness-test.workers.dev%2Fmcp&type=streamable_http&id=witness&name=Witness

Is Witness up right now?

It answered our last check on 24 October 2026 in 447 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to Witness

Questions about Witness

How many tools does Witness have?

1, as returned by the server's own tools/list on 21 September 2026: contract_witness.

Is Witness down?

It answered our last check on 24 October 2026 in 447 ms. Over 6 checks since 11 September 2026 it answered 6.

How do I add Witness to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://witness-contractwitness-production.witness-test.workers.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Witness need an API key?

It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.

Where this comes from

Publisher: io.github.tfitzgerwitness. Endpoint host: witness-contractwitness-production.witness-test.workers.dev. ARD identifier: urn:air:io.github.tfitzgerwitness:mcp:witness. First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.