# Polygraph MCP Server

> Polygraph MCP Server — kishanraj41-datahub-polygraph. Use this tool when you need to verify data lineage accuracy and detect potential issues in your catalog. The Polygraph MCP Server provides runtime-proven data lineage verdicts, allowing agents to identify undeclared sources and phantom edges, and retrieve incident reports. It takes in declared catalog lineage as input and outputs verified lineage and incident reports, making it ideal for use cases requiring data quality assurance and validation.

Canonical page: https://skillsregistry.net/skills/kishanraj41-datahub-polygraph  
JSON: https://api.skillsregistry.net/v1/skills/kishanraj41-datahub-polygraph

## Description

Provides MCP tools that expose runtime-proven data lineage verdicts from Polygraph, allowing agents to verify declared catalog lineage, detect undeclared sources and phantom edges, and retrieve incident reports.

## Trust

- **Trust score (0–1):** 0.66
- **Verification tier:** scanned
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/w8ou7v4qw8)
- **Repository:** <https://github.com/kishanraj41/datahub-polygraph>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "kishanraj41-datahub-polygraph"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/kishanraj41-datahub-polygraph` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/kishanraj41-datahub-polygraph/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt