# mcp-rec

> mcp-rec — yubinkim444-mcp-rec. Use this tool when you need to record and replay Model Context Protocol server traffic for testing, bug reporting, or offline demonstrations, accepting MCP server traffic as input and producing JSONL output for deterministic replay. It solves issues with reproducing and debugging MCP-related problems, enabling reliable testing and demonstration of MCP-based applications. Ideal for use in development and testing contexts where MCP traffic needs to be reliably recorded and replayed.

Canonical page: https://skillsregistry.net/skills/yubinkim444-mcp-rec  
JSON: https://api.skillsregistry.net/v1/skills/yubinkim444-mcp-rec

## Description

VCR for the Model Context Protocol. Record any MCP server's traffic to JSONL, replay it deterministically — for tests, bug reports, and offline demos.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** scanned
- **Last scanned:** 2026-09-01

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** other
- **Updated:** 2026-09-21

## Source

- **Source listing:** [GitHub](https://github.com/yubinkim444/mcp-rec)

## 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": "yubinkim444-mcp-rec"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/yubinkim444-mcp-rec` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/yubinkim444-mcp-rec/pull`

---
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