workpapers-mcp

An MCP server over my itgc-audit-workpapers pack: an IT General Controls audit of my own AWS environment, written up as five markdown workpapers. This server exposes that pack as tools any MCP-capable AI client can call.

Audit workpapers are cross-referenced by design. A risk points to a control, the control points to a test, the test points to a finding. Following those links by hand means flipping between files. With this server a model can trace a control from risk to result in one call, or answer "whats still open?" straight from the files.

Tools

Related MCP server: Security Controls MCP Server

Setup

python3 -m venv .venv
.venv/bin/pip install mcp

Wire it into Claude Code:

claude mcp add workpapers -- /path/to/workpapers-mcp/.venv/bin/python /path/to/workpapers-mcp/server.py

The server reads the pack from ~/aiProjects/aminWork/automation-portfolio/itgc-audit-workpapers. Change DATA_DIR at the top of server.py to point it somewhere else.

Demo

What it looks like from Claude Code:

> trace control A3 in the workpapers

⏺ workpapers · control_lookup("A3")

  A3 (Domain 1: Access)
  Risk: Password-only sign-in is phishable
  Control: MFA enforced on every human identity
  Where it lives: IAM MFA config
  Criteria: CIS 1.10

  **T-A3 MFA enforcement.**
  ToD/ToE: MFA device listing inspected for all 12 demo users.
  Result: Exception, see F-2.

  Findings citing T-A3: F-2 Two users without MFA

> anything still open?

⏺ workpapers · open_items()

  2 open item(s):
  - Finding F-2 Two users without MFA: Open
  - Test T-A3: Exception, see F-2.

⏺ One real gap. Two users have no MFA, raised as F-2 and still open.
  The T-A3 exception is the same issue seen from the test side.

The controls and findings above are demo data. The format is exactly what the server returns.

Design notes

• Read-only by construction. Every tool reads markdown files. Nothing writes, deletes or touches the network.

• Parses the pack as written. Matrix rows, bold test headings and ## F-N. finding sections are the real structure of the workpapers, so the tools follow the same cross-references a reviewer would.

• Drafting notes stay private. Square bracket [REVIEW NOTE ...] placeholders are replaced with a neutral marker before any text leaves the server, and open_items counts them so unfinished work still shows up.

Honest notes

• The parsing is tied to this pack's markdown conventions. A workpaper written in a different layout wont parse without changes to the regexes.

• The pack is a self-audit of one small personal AWS account. The tools make it easier to navigate. They dont add assurance the workpapers dont already carry.

• open_items treats any finding whose status doesnt start with "Remediated" as open, so accepted and disclosed limitations show up there on purpose.

• The test lives in test_server.py and runs against a synthetic pack in a temp dir. Run it with python test_server.py or pytest.

About

Al Amin Bashir Afara, Dubai · github.com/aminafara123 · linkedin.com/in/aminafara