# mcp-trace

> mcp-trace — froggychips-mcp-trace. Use this tool when you need to monitor and log MCP JSON-RPC traffic for debugging or analysis purposes. It acts as a stdio MITM proxy, capturing and storing traffic in a local SQLite database, helping to understand the behavior of MCP applications. Ideal for use cases where visibility into MCP communication is required, such as troubleshooting or security auditing.

Canonical page: https://skillsregistry.net/skills/froggychips-mcp-trace  
JSON: https://api.skillsregistry.net/v1/skills/froggychips-mcp-trace

## Description

Stdio MITM proxy that logs MCP JSON-RPC traffic to local SQLite. Sister project to mcp-skills-vault — vault answers 'what to install safely', trace answers 'what is it doing'.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

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

## Source

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

## 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": "froggychips-mcp-trace"
    }
  }
}
```

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