A guide to SAP Materials Management (MM), the part of SAP used to buy materials and track goods and supplier invoices. It follows the process from purchase request through receipt and invoice checking.

Use it for purchase requisitions and orders, goods receipts, invoice verification, inventory, material records, supplier evaluation, GR/IR clearing, and closing.

It helps diagnose purchasing, stock, receipt, invoice, and period-closing problems while avoiding unsafe changes to production data.

sap-mm — Skill for Claude Code by BoxLogoDev/sapstack

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add BoxLogoDev/sapstack --skill sap-mm

Clone the repo

git clone --depth 1 https://github.com/BoxLogoDev/sapstack

Made for: Claude Code.

Or install sap-mm, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/boxlogodev/sapstack/sap-mm/github.svg)](https://agentmods.dev/skills/boxlogodev/sapstack/sap-mm)

Your own site

<a href="https://agentmods.dev/skills/boxlogodev/sapstack/sap-mm"><img src="https://agentmods.dev/badge/skills/boxlogodev/sapstack/sap-mm/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/boxlogodev/sapstack/sap-mm"><img src="https://agentmods.dev/badge/skills/boxlogodev/sapstack/sap-mm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 8,196 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Excessive Agency · line 613
Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00117	$0.08196
Opus 5.5	$0.00047	$0.03278
Sonnet 5.5	$0.00023	$0.01639
Haiku 4.5	$0.00012	$0.00820

Measured 1mo ago against content hash 03f0317450f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sap-mm scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/sap-mm/skills/sap-mm/SKILL.md · 651 lines

How it starts

The opening of the file, as written. The whole thing — 651 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SAP Materials Management (MM) Skill

0. Environment Intake and Safety Contract

Before diagnosing or recommending an MM action, collect:

Release: ECC 6.0 EhP or S/4HANA release year
Deployment: On-Premise, RISE/Private Cloud, or Public Cloud
Industry/process: manufacturing, retail, project procurement, services, or regulated industry
Scope keys: user-provided purchasing organization, plant, storage location, PO, and material
Evidence: exact message class/number, T-code or Fiori app, timestamp, last normal document
Control state: posting period, approval status, GR-based IV flag, and whether QM/batch/serial control applies

Never invent company codes, G/L accounts, cost centers, plants, purchasing organizations, or tolerance values. If environment context is missing, ask up to four grouped questions and still provide clearly labelled provisional read-only checks. Configuration changes require a Transport Request (TR), a representative test in DEV/QA, UAT evidence, and a rollback plan. Never edit production tables with SE16N.

1. Procurement Cycle

PR (ME51N) → RFQ (ME41) → Quotation (ME47) → PO (ME21N)
→ GR (MIGO 101) → IV (MIRO) → Payment (F110)

Shortcut flows:

Without RFQ: PR → PO (ME58 — auto-convert PR to PO)
Consignment: PO item cat K → GR → settlement (MRKO)
Subcontracting: PO item cat L → GI components → GR finished

2. Purchase Order Issues

Account assignment errors

Category K (cost center): cost center must exist and be active
Category A (asset): asset master must exist, depreciation area active
Category F (internal order): order must be in Released status
Category P (project/WBS): WBS element must be open for costs

Tolerance check (MIRO)

OMR6 → tolerance keys: BD (amount) / VP (moving avg price variance) / PP (price)
Tolerance = percentage + absolute amount — both must be within limits

GR-based invoice verification

PO item → Invoice tab → GR-Based IV flag = X
With flag: MIRO only possible after GR; invoice quantity = GR quantity

Read the full file on GitHub · 651 lines

Files

What ships with it

15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 651 lines · 117 tokens per session scan A 03f0317450f8

Subscribe to this mod's changes

sap-mm is a skill published in the GitHub repository BoxLogoDev/sapstack (20 stars, last pushed 23d ago), licensed MIT. It adds 117 tokens to every session and 8,196 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

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