legal-for-founders

legal-for-founders is a skill for Claude Code from LeadMagic/gtm-skills. It costs 123 tokens per session (4,027 once invoked), scanned A, original, MIT.

A legal checklist for SaaS startup founders covering company formation, ownership of work, contracts, privacy, website terms, and fundraising documents. SaaS means software delivered as an online service.

In plain words
What is it for?
Planning incorporation, protecting intellectual property, preparing terms and privacy documents, creating agreements, organising fundraising paperwork, and checking co-founder ownership arrangements.
Why use it?
Unfinished legal foundations can create problems during fundraising, an acquisition, or a dispute. It helps founders identify documents and decisions that need attention and know when to involve a lawyer.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument; mentions Claude Code; mentions Codex.

Part of the gtm-skills plugin — 196 skills shipped together

Good fit Planning incorporation, protecting intellectual property, preparing terms and privacy documents, creating agreements, organising fundraising paperwork, and checking co-founder ownership arrangements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leadmagic/gtm-skills/legal-for-founders
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 LeadMagic/gtm-skills --skill legal-for-founders
Clone the repo
git clone --depth 1 https://github.com/LeadMagic/gtm-skills

Made for: Claude Code.

Or install gtm-skills, the plugin that ships this one along with the rest of its 196 skills.

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.

agentmods badge for legal-for-founders

README.md
[![agentmods](https://agentmods.dev/badge/skills/leadmagic/gtm-skills/legal-for-founders/github.svg)](https://agentmods.dev/skills/leadmagic/gtm-skills/legal-for-founders)
Your own site
<a href="https://agentmods.dev/skills/leadmagic/gtm-skills/legal-for-founders"><img src="https://agentmods.dev/badge/skills/leadmagic/gtm-skills/legal-for-founders/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.

agentmods 80×15 button for legal-for-founders

Your own site · 80×15
<a href="https://agentmods.dev/skills/leadmagic/gtm-skills/legal-for-founders"><img src="https://agentmods.dev/badge/skills/leadmagic/gtm-skills/legal-for-founders.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,027 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 pass 7 Sept 2026
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00123 $0.04027
Opus 5 $0.00062 $0.02014
Sonnet 5 $0.00025 $0.00805
Haiku 4.5 $0.00012 $0.00403

Measured 8d ago against content hash 81cecdb523ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

legal-for-founders 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/check-output.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/founder-led/legal-for-founders/SKILL.md · 372 lines

How it starts

The opening of the file, as written. The whole thing — 372 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

Legal mistakes are the most expensive mistakes in startups — because you don't discover them until years later, during fundraising, acquisition, or a lawsuit. The mistake: "we'll fix the legal stuff later." A missing IP assignment can kill a $100M acquisition. A handshake co-founder deal becomes a lawsuit at $10M ARR. A copied Terms of Service gets you sued under GDPR. This skill covers every legal foundation a SaaS founder needs: incorporation, IP, contracts, privacy, and fundraising legal — with resources to do it right without spending $50K on lawyers.

Authoritative Foundations

  • YC Startup Documents (YC SAFE, Series Seed, incorporation docs) — Startup operating cadence — default alive, talk to users, launch fast.
  • Clerky — Standard incorporation, equity, and fundraising docs — Standard incorporation, equity, and fundraising docs
  • CooleyGO — Free startup legal resources (Cooley LLP) — Free startup legal resources (Cooley LLP)
  • Orrick — Startup legal toolkit — Startup legal toolkit
  • Fenwick & West — Startup legal guides — Startup legal guides
  • Alex Macgillivray (Twitter, Google GC) — Platform legal — Platform legal

When to Use

Trigger phrases: "incorporate startup", "Delaware C-Corp", "startup legal", "Terms of Service template", "Privacy Policy for SaaS", "NDA template", "SAFE agreement", "IP assignment", "founder legal checklist", "when to hire a startup lawyer", "Clerky vs lawyer"

When to Hire a Lawyer (and When Not To)

Use standardized docs + AI review (don't need lawyer):

  • Incorporation (Clerky, Stripe Atlas, Firstbase.io)
  • SAFE / convertible note (YC templates)
  • Terms of Service (generator + review)
  • Privacy Policy (generator + review)
  • NDA (standard templates)
  • Independent contractor agreements
  • Offer letters (standard templates)

Hire a lawyer for:

  • Priced equity rounds (Series A+)
  • Acquisition / exit
  • Complex IP situations (university IP, prior employer IP)
  • Regulatory issues (fintech, healthcare, defense)
  • Litigation or threats of litigation
  • International entity setup
  • Co-founder separation disputes

Read the full file on GitHub · 372 lines

Files

What ships with it

3 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.

  1. 8d ago First seen · 372 lines · 123 tokens per session scan A 81cecdb523ae

Subscribe to this mod's changes

legal-for-founders is a skill published in the GitHub repository LeadMagic/gtm-skills (49 stars, last pushed 4d ago), licensed MIT. It adds 123 tokens to every session and 4,027 once invoked, about $0.0006 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 2026-09-03.

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