Add MCP adapter MVP

[mertsatilmaz]

Goal

Add an MVP adapter for MCP-integrated agent workflows.

The adapter should translate MCP tool calls into the harness Trace format, including tool source metadata.

Why this matters

MCP is a major integration layer for agentic systems. A harness for agent security regressions should be able to observe and evaluate MCP tool use, especially around tool origin, trust boundaries, and sensitive actions.

Prerequisite

This should be implemented after:

Document MCP adapter design

[Flames4fun]

Hi @mertsatilmaz, this issue looks really interesting.

I noticed you self-assigned it, so I don’t want to step on your work. If it’s still available, I’d love to take it on or help with it.

I’m especially interested in MCP-integrated agent workflows and agent security evaluation, so this seems like a great fit.

Thanks :))

[mertsatilmaz]

Hello @Flames4fun, you are the best. First, let me have a look at it. I need to design how it should be like. Then I can assign the further issues to you once the base is stable and working. If that's ok!

[Flames4fun]

Sounds good to me!

I’d be happy to help once the base is stable and there are follow-up issues ready.

I’ll keep an eye on the repo, and feel free to assign me one of the next MCP/agent-safety tasks when you think it makes sense. Thanks :))