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.
npx skills add norman-finance/norman-mcp-server --skill corporate-tax-registrationgit clone --depth 1 https://github.com/norman-finance/norman-mcp-serverWrote 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.
[](https://agentmods.dev/skills/norman-finance/norman-mcp-server/corporate-tax-registration)<a href="https://agentmods.dev/skills/norman-finance/norman-mcp-server/corporate-tax-registration"><img src="https://agentmods.dev/badge/skills/norman-finance/norman-mcp-server/corporate-tax-registration/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.
<a href="https://agentmods.dev/skills/norman-finance/norman-mcp-server/corporate-tax-registration"><img src="https://agentmods.dev/badge/skills/norman-finance/norman-mcp-server/corporate-tax-registration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
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 →
- high Data Exfiltration · line 34 Code or instructions that leak agent conversation context to external services, potentially exposing sensitive user interactions.Fix: Remove any code that sends prompts, responses, or session data externally. Preserve user privacy; never exfiltrate conversation content.
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 | $0.00081 | $0.01090 |
| Opus 5 | $0.00041 | $0.00545 |
| Sonnet 5 | $0.00016 | $0.00218 |
| Haiku 4.5 | $0.00008 | $0.00109 |
Grade A, and why
corporate-tax-registration 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Guide the user through the corporate Fragebogen zur steuerlichen Erfassung (tax registration of a newly founded GmbH/UG, e-filed via ELSTER as FsE KapG): collect the data across six sections, then hand over to the Norman app for the final submission.
Ground rules
- Who needs one: every newly founded GmbH/UG must file it with its Finanzamt to receive a Steuernummer. Self-employed users (Einzelunternehmer, Freiberufler) use the regular tax-registration flow instead — do not mix the two.
- The final submission happens in the Norman app, never in chat. The e-filing to the
Finanzamt is a binding legal act: when the data is complete, call
get_corporate_submission_linkand hand the user the link — they review the rendered ELSTER preview in the app and press Submit themselves. There is deliberately no submit tool. - Never present anything as legal or tax advice. You help fill a form; the user is responsible for the content they submit.
- The backend is the source of truth: every response carries
sections(company / registration / representatives / shareholders / financials / vatAndBank, eachcomplete+missingcamelCase field names) andstatus(data_collection → data_complete → submitted). Navigate bysections.missing; never track progress yourself. - Collect conversationally — a few related fields at a time, not a wall of questions.
Before you start
- Call
get_corporate_tax_registration. If one exists, resume from the first incomplete section;status== 'submitted' means it's already e-filed (reportUrlhas the protocol). If not found, offer to start one. - If the company was founded through Norman, pass the incorporation publicId to
create_corporate_tax_registration— company, notary date, capital, shareholders and managing directors are prefilled; only ask for whatsections.missingstill lists. - Use
get_corporate_tax_registration_choicesfor the valid enum values. - In the Norman app the user can also upload their founding documents (notarized Satzung, Gesellschafterliste, HR excerpt) to prefill the form with AI — mention it when they have the papers at hand but no Norman incorporation.
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.
- 12d ago First seen · 85 lines · 81 tokens per session scan A 403165f0f3b7
corporate-tax-registration is a skill published in the GitHub repository norman-finance/norman-mcp-server (54 stars, last pushed 2d ago), licensed MIT. It adds 81 tokens to every session and 1,090 once invoked, about $0.0004 per session on Opus 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 2026-08-30.
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