Cap Table
Deterministic SAFE/priced-round dilution math with rule-pack citations, not LLM arithmetic.
Test report
- Verdict
- Works with setup
- Score
- Tested
- Jul 14, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Aug 10, 2026 · 1bf22f7
Ran all 9 producer scripts for real on a small cap table (1 founder, 1M option pool, one $500K SAFE at a $5M post-money cap) through a Series A scenario: cap-implied SAFE ownership came out to exactly 10.0% (matches hand math), and the priced-round solver correctly netted the YC post-money-cap denominator gotcha that naive LLM arithmetic reliably gets wrong, landing founders at 65.2% post-round with full rule-pack provenance and one counsel-review flag (QSBS date sensitivity). The catch: SKILL.md calls ${CLAUDE_PLUGIN_ROOT}/scripts/founder_context.py at Step 1, which lives outside the cap-table folder — a plain `cp -r skills/cap-table` install breaks on the very first step.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 4/5
- Triggers reliably 5/5
- Output vs. baseline 9/10
- Docs & honesty 4/5
What Cap Table does
Runs a 9-script deterministic pipeline (SAFE/note conversion, priced rounds, anti-dilution, option-pool top-ups, Israeli/Delaware flips) that turns a founder's SAFE, term sheet, or Carta export into cited dilution math and a counsel-handoff packet. Triggers only when the user has actual cap-table content and asks to model conversion, dilution, or a flip — explicitly not on general fundraising or term-glossary questions. Ships as part of a Claude Cowork/Code plugin; a bare skill-folder copy is missing the shared founder_context.py script it calls at startup.
How to install Cap Table
git clone https://github.com/lool-ventures/founder-skills
cd founder-skills
mkdir -p ~/.claude/skills
cp -r founder-skills/skills/cap-table ~/.claude/skills/cap-table
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Cap Table
-
/cap-tableDeterministic SAFE/priced-round dilution math with rule-pack citations, not LLM arithmetic.
It also activates on plain-language prompts like these:
-
Model our Series A dilution with the existing SAFE notes -
Calculate founder ownership after this priced round closes -
Run our cap table through a 10% option pool top-up scenario
Frequently asked questions
- Is the Cap Table skill free?
- Yes. The skill itself is free from lool-ventures/founder-skills. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Cap Table work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Works with setup. Ran all 9 producer scripts for real on a small cap table (1 founder, 1M option pool, one $500K SAFE at a $5M post-money cap) through a Series A scenario: cap-implied SAFE ownership came out to exactly 10.0% (matches hand math), and the priced-round solver correctly netted the YC post-money-cap denominator gotcha that naive LLM arithmetic reliably gets wrong, landing founders at 65.2% post-round with full rule-pack provenance and one counsel-review flag (QSBS date sensitivity). The catch: SKILL.md calls ${CLAUDE_PLUGIN_ROOT}/scripts/founder_context.py at Step 1, which lives outside the cap-table folder — a plain `cp -r skills/cap-table` install breaks on the very first step.
- What is the Cap Table SkillProof Score?
- 8.8/10 — installs cleanly 4/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 4/5.
- How do I install Cap Table?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Cap Table with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.