Startup Due Diligence logo

Startup Due Diligence

Community
skala-io
startup-due-diligence

Legal due diligence review for seed-stage and Series A startups (US, Delaware C-Corp focus). Supports both investor and founder perspectives. Capabilities include: (1) Interactive document review and issue spotting; (2) Document request list generation; (3) Cap table and SAFE/convertible note analysis; (4) Red flag identification with severity ratings; (5) Diligence report generation. TRIGGERS: due diligence, DD, startup investment, cap table review, Series A, seed round, investor diligence, legal review startup, SAFE analysis, convertible note, 409A, founder vesting.

Overview

Publisherskala-io
Repositorylegal-skills
Skill namestartup-due-diligence
Stars
53
Forks
11
Bundled files
22
LicenseApache-2.0
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • 22 bundled files

    Scripts, templates, and references the model can read while it works. Files are read-only and never executed.

  • Open source

    Published by skala-io on GitHub. Read the source before you install it.

Installation

Install the Startup Due Diligence AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/skala-io/legal-skills/tree/main/skills/startup-due-diligence
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/skala-io/legal-skills.git /tmp/legal-skills
mkdir -p .claude/skills
cp -r /tmp/legal-skills/skills/startup-due-diligence .claude/skills/startup-due-diligence
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Startup Due Diligence in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Startup Due Diligence on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Startup Due Diligence is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

First published on Skala Legal Skills

Legal Disclaimer

This skill is provided for informational and educational purposes only and does not constitute legal advice. The analysis and information provided should not be relied upon as a substitute for consultation with a qualified attorney. No attorney-client relationship is created by using this skill. Laws and regulations vary by jurisdiction and change over time. Always consult with a licensed attorney in your jurisdiction for advice on specific legal matters. The creators and publishers of this skill disclaim any liability for actions taken or not taken based on the information provided.


Startup Due Diligence Skill

Overview

Conduct legal due diligence on early-stage US startups (Seed/Series A). This skill supports:

  • Investors: Identify risks before investing
  • Founders: Prepare for diligence, fix issues proactively

Workflow

Step 1: Intake

Collect context before proceeding:

1. Perspective: Investor or Founder?
2. Stage: Pre-seed / Seed / Series A
3. Scope: Full DD or specific area (Corporate, Cap Table, IP, etc.)
4. Company basics: Name, State, Entity type, Industry

Step 2: Document Collection

Based on scope, request documents by category. See references/checklists/ for complete lists:

CategoryReference File
Corporate & Formationreferences/checklists/corporate.md
Cap Table & Securitiesreferences/checklists/cap-table.md
Intellectual Propertyreferences/checklists/ip.md
Employment & Foundersreferences/checklists/employment.md
Material Contractsreferences/checklists/contracts.md
Compliance & Regulatoryreferences/checklists/compliance.md
Litigationreferences/checklists/litigation.md
Financialreferences/checklists/financials.md

Step 3: Document Review

For each document received:

  1. Identify document type and category
  2. Check against category-specific criteria
  3. Flag issues using severity ratings (see below)
  4. Cross-reference with other documents for consistency

Severity Ratings:

  • 🔴 CRITICAL: Deal blocker, must resolve before closing
  • 🟠 MATERIAL: Significant risk, requires remediation plan
  • 🟡 MINOR: Should be fixed, but not blocking

See references/red-flags/common-issues.md for comprehensive issue patterns.

Step 4: Issue Analysis

For identified issues, provide:

  1. Description: What the issue is
  2. Risk: Why it matters
  3. Remediation: How to fix it
  4. Timeline: Estimated effort to resolve
  5. Escalation: Whether legal counsel required

Step 5: Report Generation

Generate deliverables using templates in assets/templates/.

CRITICAL: Template Usage Protocol

NEVER directly edit template .docx files. Always use the deterministic script:

bash
# 1. Collect data into JSON
cat > data.json << 'EOF'
{
  "COMPANY_NAME": "Acme Inc.",
  "REPORT_DATE": "2024-01-15",
  ...
}
EOF

# 2. Validate data
python scripts/validate_data.py diligence-report data.json

# 3. Populate template (deterministic - only fills {{PLACEHOLDERS}})
python scripts/populate_template.py assets/templates/diligence-report.docx data.json output.docx

This ensures template text is NEVER modified - only placeholders are filled.

Guidance Documents

Load these as needed based on the issues encountered:

TopicReference
SAFE notes & convertiblesreferences/guidance/safe-notes.md
Delaware C-Corp specificsreferences/guidance/delaware-corp.md
Stock options & 409Areferences/guidance/409a-options.md
Founder equity & vestingreferences/guidance/founder-equity.md

Quick Reference: Common Red Flags

Corporate

  • Missing board/stockholder consents for key actions
  • Charter not filed or not current
  • No bylaws or outdated bylaws

Cap Table

  • Discrepancies between cap table and stock ledger
  • Options granted without 409A valuation
  • SAFE/note terms not modeled in pro forma

IP

  • No IP assignment from founders (pre-incorporation work)
  • Missing PIIA from contractors who built product
  • Open source license violations

Employment

  • Founder shares not vesting (or fully vested day 1)
  • Key employees without offer letters/agreements
  • Misclassified contractors

Compliance

  • No securities filings (Form D, Blue Sky)
  • Missing 83(b) elections for early exercises

Output Formats

  1. Summary Table: Quick overview of findings by category
  2. Detailed Report: Full analysis with recommendations (DOCX)
  3. Issue Tracker: Spreadsheet format for tracking remediation
  4. Document Request List: Customized checklist for target company

Disclaimers

  • This is diligence assistance, not legal advice
  • All findings should be reviewed by qualified legal counsel
  • Escalate securities, tax, and regulatory matters to specialists
  • Document review is point-in-time; circumstances may change

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Startup Due Diligence AI skill do?

Legal due diligence review for seed-stage and Series A startups (US, Delaware C-Corp focus). Supports both investor and founder perspectives. Capabilities include: (1) Interactive document review and issue spotting; (2) Document request list generation; (3) Cap table and SAFE/convertible note analysis; (4) Red flag identification with severity ratings; (5) Diligence report generation. TRIGGERS: due diligence, DD, startup investment, cap table review, Series A, seed round, investor diligence, legal review startup, SAFE analysis, convertible note, 409A, founder vesting.

Why use Startup Due Diligence on TypingMind?

Because you install it once and use it with any model. Startup Due Diligence is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Startup Due Diligence in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/skala-io/legal-skills/tree/main/skills/startup-due-diligence. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Startup Due Diligence?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Startup Due Diligence?

As many as you like. As long as a model supports skills, you can use Startup Due Diligence with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Startup Due Diligence AI skill free?

Yes. It is published on GitHub by skala-io under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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