Koskamo

perf-mcp

An MCP server that detects and repairs hallucinations in LLM-generated text, validates JSON against schemas, and corrects output errors. It supports multiple clients like Claude Code and Cursor, using multi-channel verification and auto-repair capabilities to ensure data accuracy before it reaches users.

Package and access

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

perf-mcp logo, by Perf-TechnologyCommunity listingLocal stdioSource reviewed; not executedPublished by Perf-Technology
You need:PERF_API_KEY Yes Your Perf API key ( pk_live_xxx )
Vendor documentation

What you can do with it

  • Detect and repair hallucinations in LLM-generated text
  • Validate LLM-generated JSON against a schema and auto-repair violations
  • Classify error types and apply corrections for factual or semantic inconsistencies
  • Route LLM requests to the optimal model based on task complexity

Source and maintenance

Community listingRegistry 0.1.1MIT
mcp-registry: io.github.Perf-AI/perf-mcp@0.1.1Source repository
Last repository push
Maintenance checked

Packages and installation

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

perf-mcp 0.1.1

npm
perf-mcp package definition
{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "perf-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "PERF_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "Your Perf API key (get one at dashboard.withperf.pro)"
    }
  ]
}

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.

  • · repository · passed · metadata changed · updated
  • · 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": {
    "perf-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "perf-mcp@0.1.1"
      ],
      "env": {
        "PERF_API_KEY": "<YOUR_PERF_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "perf-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "perf-mcp@0.1.1"
      ],
      "env": {
        "PERF_API_KEY": "<YOUR_PERF_API_KEY>"
      }
    }
  }
}

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": {
    "perf-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "perf-mcp@0.1.1"
      ],
      "env": {
        "PERF_API_KEY": "<YOUR_PERF_API_KEY>"
      }
    }
  }
}

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": {
    "perf-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "perf-mcp@0.1.1"
      ],
      "env": {
        "PERF_API_KEY": "<YOUR_PERF_API_KEY>"
      }
    }
  }
}

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