Attest proxy MCP Server

io.github.dev-prathap/attest-proxy

Repository Registry

What is the Attest proxy MCP server?

Zero-code proxy: policy, human gate, read-back and a hash-chained ledger for any MCP server.

How to install Attest proxy

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ATTEST_POLICY
Path to a policy YAML
ATTEST_LEDGER
Ledger SQLite path (default .attest/ledger.sqlite)
ATTEST_INBOX_URL
URL of the confirm inbox (attest serve) linked from Slack cards
SLACK_BOT_TOKEN
secret
Slack bot token for confirm cards
ATTEST_SLACK_CHANNEL
Slack channel for confirm cards

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "attest-proxy": {
      "command": "uvx",
      "args": [
        "attestlayer",
        "proxy",
        "--upstream",
        "--server",
        "--mode"
      ],
      "env": {
        "ATTEST_POLICY": "<YOUR_ATTEST_POLICY>",
        "ATTEST_LEDGER": "<YOUR_ATTEST_LEDGER>",
        "ATTEST_INBOX_URL": "<YOUR_ATTEST_INBOX_URL>",
        "SLACK_BOT_TOKEN": "<YOUR_SLACK_BOT_TOKEN>",
        "ATTEST_SLACK_CHANNEL": "<YOUR_ATTEST_SLACK_CHANNEL>"
      }
    }
  }
}

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