LLMVerify MCP

A local-first MCP server for LLM output verification that provides risk signals, injection defense, PII checks, and runtime monitoring for drift and hallucination. It runs locally with zero telemetry on the free tier and supports verification for any OpenAI, Anthropic, or local client.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Subodh Kc

Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

Popularity 19 GitHub stars

What you can do with it

Verify LLM output for hallucinations and JSON quality
Redact PII from AI responses
Block prompt injection attacks
Monitor LLM latency and drift

Source and maintenance

Community listingRegistry 1.8.0

mcp-registry: io.github.subodhkc/llmverify@1.8.0 Source repository

Last repository push: Oct 9, 2026, 6:49 AM UTC
Maintenance checked: Nov 2, 2026, 5:02 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

llmverify 1.8.0

npmnpx

llmverify package definition

{
  "version": "1.8.0",
  "transport": "stdio",
  "identifier": "llmverify",
  "runtimeHint": "npx",
  "registryType": "npm",
  "packageArguments": [
    {
      "type": "positional",
      "value": "mcp",
      "description": "Run the llmverify MCP stdio server (llmverify mcp subcommand)"
    }
  ],
  "runtimeArguments": [
    {
      "type": "positional",
      "value": "-y"
    }
  ],
  "environmentVariables": [
    {
      "name": "LLMVERIFY_MCP_MAX_INPUT_CHARS",
      "default": "1000000",
      "description": "Max characters accepted in a content/input argument"
    },
    {
      "name": "LLMVERIFY_MCP_TIMEOUT_MS",
      "default": "60000",
      "description": "Per-tool wall-clock timeout in milliseconds"
    },
    {
      "name": "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS",
      "default": "50",
      "description": "Cap on any single output array"
    },
    {
      "name": "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS",
      "default": "2000",
      "description": "Cap on any single text field in output"
    },
    {
      "name": "LLMVERIFY_HOME",
      "description": "Base directory for engine local state"
    },
    {
      "name": "LLMVERIFY_AUDIT_DIR",
      "description": "Audit JSONL directory"
    },
    {
      "name": "LLMVERIFY_LOG_DIR",
      "description": "Operational log directory"
    },
    {
      "name": "LLMVERIFY_BASELINE_DIR",
      "description": "Drift baseline directory"
    },
    {
      "name": "LLMVERIFY_USAGE_FILE",
      "description": "Usage counter file"
    },
    {
      "name": "LLMVERIFY_AUDIT_HASH_KEY",
      "description": "Enables keyed hmac-sha256 content hashes in audit records"
    },
    {
      "name": "LLMVERIFY_AUDIT_NO_CONTENT_HASH",
      "description": "Set to 1 to disable content hashes in audit records"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 2, 2026, 5:02 PM UTC · repository · passed · metadata changed · updated
Nov 2, 2026, 5:02 PM UTC · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "llmverify-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "llmverify@1.8.0",
        "mcp"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<YOUR_LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<YOUR_LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<YOUR_LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<YOUR_LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<YOUR_LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<YOUR_LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<YOUR_LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<YOUR_LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<YOUR_LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "llmverify-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "llmverify@1.8.0",
        "mcp"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<YOUR_LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<YOUR_LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<YOUR_LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<YOUR_LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<YOUR_LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<YOUR_LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<YOUR_LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<YOUR_LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<YOUR_LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "llmverify-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "llmverify@1.8.0",
        "mcp"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<YOUR_LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<YOUR_LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<YOUR_LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<YOUR_LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<YOUR_LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<YOUR_LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<YOUR_LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<YOUR_LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<YOUR_LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "llmverify-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "llmverify@1.8.0",
        "mcp"
      ],
      "env": {
        "LLMVERIFY_MCP_MAX_INPUT_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_INPUT_CHARS>",
        "LLMVERIFY_MCP_TIMEOUT_MS": "<YOUR_LLMVERIFY_MCP_TIMEOUT_MS>",
        "LLMVERIFY_MCP_MAX_OUTPUT_ITEMS": "<YOUR_LLMVERIFY_MCP_MAX_OUTPUT_ITEMS>",
        "LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS": "<YOUR_LLMVERIFY_MCP_MAX_TEXT_FIELD_CHARS>",
        "LLMVERIFY_HOME": "<YOUR_LLMVERIFY_HOME>",
        "LLMVERIFY_AUDIT_DIR": "<YOUR_LLMVERIFY_AUDIT_DIR>",
        "LLMVERIFY_LOG_DIR": "<YOUR_LLMVERIFY_LOG_DIR>",
        "LLMVERIFY_BASELINE_DIR": "<YOUR_LLMVERIFY_BASELINE_DIR>",
        "LLMVERIFY_USAGE_FILE": "<YOUR_LLMVERIFY_USAGE_FILE>",
        "LLMVERIFY_AUDIT_HASH_KEY": "<YOUR_LLMVERIFY_AUDIT_HASH_KEY>",
        "LLMVERIFY_AUDIT_NO_CONTENT_HASH": "<YOUR_LLMVERIFY_AUDIT_NO_CONTENT_HASH>"
      }
    }
  }
}

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