LLMVerify

io.github.subodhkc/llmverify · v1.8.0

Local-first MCP server for LLM output verification — risk signals, injection and PII checks.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add llmverify -e LLMVERIFY_MCP_MAX_INPUT_CHARS=<LLMVERIFY_MCP_MAX_INPUT_CHARS> -e LLMVERIFY_MCP_TIMEOUT_MS=<LLMVERIFY_MCP_TIMEOUT_MS> -e LLMVERIFY_MCP_MAX_OUTPUT_ITEMS=<LLMVERIFY_MCP_MAX_OUTPUT_ITEMS> -e LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS=<LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS> -e LLMVERIFY_HOME=<LLMVERIFY_HOME> -e LLMVERIFY_AUDIT_DIR=<LLMVERIFY_AUDIT_DIR> -e LLMVERIFY_LOG_DIR=<LLMVERIFY_LOG_DIR> -e LLMVERIFY_BASELINE_DIR=<LLMVERIFY_BASELINE_DIR> -e LLMVERIFY_USAGE_FILE=<LLMVERIFY_USAGE_FILE> -e LLMVERIFY_AUDIT_HASH_KEY=<LLMVERIFY_AUDIT_HASH_KEY> -e LLMVERIFY_AUDIT_NO_CONTENT_HASH=<LLMVERIFY_AUDIT_NO_CONTENT_HASH> -- npx -y [email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "llmverify": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "llmverify": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "llmverify": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`LLMVERIFY_MCP_MAX_INPUT_CHARS` Optional	Max characters accepted in a content/input argument
`LLMVERIFY_MCP_TIMEOUT_MS` Optional	Per-tool wall-clock timeout in milliseconds
`LLMVERIFY_MCP_MAX_OUTPUT_ITEMS` Optional	Cap on any single output array
`LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS` Optional	Cap on any single text field in output
`LLMVERIFY_HOME` Optional	Base directory for engine local state
`LLMVERIFY_AUDIT_DIR` Optional	Audit JSONL directory
`LLMVERIFY_LOG_DIR` Optional	Operational log directory
`LLMVERIFY_BASELINE_DIR` Optional	Drift baseline directory
`LLMVERIFY_USAGE_FILE` Optional	Usage counter file
`LLMVERIFY_AUDIT_HASH_KEY` Optional, secret	Enables keyed hmac-sha256 content hashes in audit records
`LLMVERIFY_AUDIT_NO_CONTENT_HASH` Optional	Set to 1 to disable content hashes in audit records

Details

Package	`[email protected]` (NPM, stdio)
First published	9 Oct 2026
Last updated	9 Oct 2026
Registry name	`io.github.subodhkc/llmverify`

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Installed and run on your own machine, so there is no public endpoint to check.

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