# fixsim-mcp

> fixsim-mcp — gammathreetrading-fixsim-mcp. Use this tool when you need to test FIX protocols from various sources like Claude, ChatGPT, or Cursor, as it provides an MCP server for FIXSIM, allowing for seamless integration and testing of FIX messages. It solves problems related to FIX protocol compatibility and testing, providing a reliable interface for inputting and outputting FIX messages. Ideal for use cases requiring thorough testing of FIX protocols in a controlled environment.

Canonical page: https://skillsregistry.net/skills/gammathreetrading-fixsim-mcp  
JSON: https://api.skillsregistry.net/v1/skills/gammathreetrading-fixsim-mcp

## Description

MCP server for FIXSIM: test FIX from Claude, ChatGPT, or Cursor

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

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

## 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": "gammathreetrading-fixsim-mcp"
    }
  }
}
```

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