MCP server that gates mainframe z/OS changes behind spec and plan approval
View on GitHub ↗Give AI Agents real access to your mainframe and keep it from changing anything you haven't approved.
MCP is how AI Agents talks to outside systems. An MCP server hands AI a set of tools it can call. Bridge is an MCP server whose tools are your mainframe - datasets, members, jobs, spool, with an approval gate in front of anything destructive.
Install it once, point Claude Code/Codex at it, then just talk to Claude.
- Python 3.11+ and Node.js 20+ - Claude Code — install guide - A working Zowe CLI profile. Test it: zowe zosmf check status. If that fails, fix Zowe first — Bridge reads the same profile.
The credential resolver reads your mainframe password from your OS keychain at run time. No password is stored in this repo.
It should start and wait silently. Press Ctrl+C. Errors? See Troubleshooting.
Verify with claude mcp list — you want mainframe-workflow: ✔ Connected.
Reading is free. Listing datasets, reading members, checking jobs, searching spool — no approval needed.
Changing anything is gated. Before Claude can write a member, submit a job, or delete a dataset, it must:
1. Open a request 2. Write a spec — what changes and why — and get your explicit yes 3. Write a plan — the exact steps — and get your explicit yes
Editing the spec after approval un-approves the plan too. Every mutation is logged with its inputs; passwords are redacted, diffs are hashed.
An agent that skips a step gets PLANNOTAPPROVED instead of access to your system.
From the project README.
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