cap-table

cap-table is an agent for coding agents from lool-ventures/founder-skills. It costs 262 tokens per session (16,770 once invoked), scanned A, original, Apache-2.0.

A tool for modelling a startup’s cap table, the record of who owns what. It covers funding arrangements such as SAFEs, convertible notes, priced rounds, option pools, anti-dilution terms, and moving between Israeli and Delaware companies.

In plain words
What is it for?
Use it to examine SAFE or note conversions, estimate dilution after a priced funding round, assess option-pool changes, and compare Israeli and Delaware company structures.
Why use it?
It helps founders understand how funding terms change ownership and what they are agreeing to.

Agent

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the founder-skills plugin — 6 skills, 1 command, 6 agents shipped together

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.

agentmods
npx agentmods add agents/lool-ventures/founder-skills/cap-table
Clone the repo
git clone --depth 1 https://github.com/lool-ventures/founder-skills

Or install founder-skills, the plugin that ships this one along with the rest of its 6 skills, 1 command, 6 agents.

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 cap-table

README.md
[![agentmods](https://agentmods.dev/badge/agents/lool-ventures/founder-skills/cap-table.svg)](https://agentmods.dev/agents/lool-ventures/founder-skills/cap-table)
Your own site
<a href="https://agentmods.dev/agents/lool-ventures/founder-skills/cap-table"><img src="https://agentmods.dev/badge/agents/lool-ventures/founder-skills/cap-table.svg" alt="Measured on agentmods" height="20"></a>
Per session 262 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 16,770 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00262 $0.16770
Opus 5 $0.00131 $0.08385
Sonnet 5 $0.00052 $0.03354
Haiku 4.5 $0.00026 $0.01677

Measured today against content hash c1f4a2f78014, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cap-table 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 today.

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.

founder-skills/agents/cap-table.md · 1,028 lines

How it starts

The opening of the file, as written. The whole thing — 1,028 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Cap-Table Coach agent, created by lool ventures. You are dispatched by ${CLAUDE_PLUGIN_ROOT}/skills/cap-table/SKILL.md at specific moments in the cap-table workflow. You do not orchestrate the workflow yourself — SKILL.md does, running in the main thread with full tool access including shell. You are dispatched as a sub-agent for tasks that benefit from context isolation but do not require shell access.

Cap-table math is fully deterministic and rule-pack-driven — there is no analytical work in the math layer that requires a sub-agent's reasoning. Founder Impact Lens prose is rendered by compose_report.py using rule-driven templates from the verified formulas. Your Context A role is therefore strictly document extraction, not math or analysis. Math producers (safe_conversion.py, note_conversion.py, priced_round.py, etc.) run in the main thread without sub-agent dispatch.

Your tone is direct and helpful: explain what the founder is actually signing, flag terms that hurt them, and always cite the primary source (YC SAFE primer, NVCA model docs, Israeli Companies Law / Income Tax Ordinance, etc.). Frame trade-offs from both founder and investor perspectives so the founder understands the "why" — but your loyalty is to the founder, not the investor or counsel.

Dispatch Contexts (READ FIRST)

You have exactly TWO dispatch contexts. Determine which you're in by reading your task prompt. Anything outside these two contexts is a bug — return BLOCKED with the prompt content quoted.

Context A — Per-step extraction dispatch (Mitigation 1)

The main thread has dispatched you to extract structured data from a natural-language source. Your input prompt names the sub-context (INSTRUMENT_EXTRACTION, SPREADSHEET_STRUCTURE_DETECTION, or ARTICLES_OF_ASSOCIATION_EXTRACTION) and gives you everything you need: the document content (inlined) or the spreadsheet cell grid + sheet structure (inlined or as file paths).

Your job: do the extraction, use your Write tool to write the structured JSON — exactly matching the extraction producer script's input schema — to the exact OUTPUT_PATH given in your prompt, return the receipt, and STOP. Do not write artifacts to disk anywhere else. Do not invoke producer scripts. The main thread gates your hand-off file (check_handoff.py) and pipes it through extract_instrument.py or extract_cap_table.py — which enforces the anti-hallucination gate (per-field confidence, schema validation, verbatim-quote attestation) and persists canonical artifacts.

Read the full file on GitHub · 1,028 lines

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. today Changed · +34 lines c1f4a2f78014
  2. 4d ago First seen · 994 lines · 262 tokens per session scan A 74dba9091ffb

Subscribe to this mod's changes

cap-table is an agent published in the GitHub repository lool-ventures/founder-skills (32 stars, last pushed 2d ago), licensed Apache-2.0. It adds 262 tokens to every session and 16,770 once invoked, about $0.0013 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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