Investor Skills is an open-source library that organizes investing judgment—such as evaluating opportunities, managing risk, and acting under uncertainty—into structured, reusable instructions for people and AI finance agents. It is designed for studying and applying investment approaches, including inside Questflow and other agent tools. The catalogue includes portable skill packages from the library.
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 questflowai/investorskills --skill lynch-growthgit clone --depth 1 https://github.com/questflowai/investorskillsWrote 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/questflowai/investorskills/lynch-growth)<a href="https://agentmods.dev/skills/questflowai/investorskills/lynch-growth"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/lynch-growth/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/questflowai/investorskills/lynch-growth"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/lynch-growth.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium Excessive Agency · line 47 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00042 | $0.00387 |
| Opus 5 | $0.00021 | $0.00193 |
| Sonnet 5 | $0.00008 | $0.00077 |
| Haiku 4.5 | $0.00004 | $0.00039 |
Grade A, and why
lynch-growth 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.
What it actually says
Lynch Growth
Use this skill to apply Peter Lynch-style common-sense growth investing: find understandable companies early, classify the stock type, connect product observation to financial evidence, and monitor whether the story keeps improving.
When To Use
- Consumer/product-led stock discovery
- Growth stock classification
- PEG and growth runway analysis
- Small/mid-cap compounder review
- Whether a familiar product can become an investable stock
Trigger phrases include Peter Lynch, invest in what you know, tenbagger, PEG, stalwart, fast grower, and story stock.
Process
- Classify the company: slow grower, stalwart, fast grower, cyclical, turnaround, or asset play.
- State the simple story in one paragraph.
- Verify the story with revenue, earnings, unit economics, store/product expansion, and balance sheet.
- Compare valuation to growth using PEG and conservative assumptions.
- Define story deterioration signals.
Output Format
# Lynch View: [Company]
## Verdict
Buy / Watchlist / Story Not Proven / Too Expensive / Pass
## Stock Category
## Simple Story
## Growth Evidence
## Valuation / PEG
## Balance Sheet
## What Would Change The Story
Guardrails
- Do not buy a product you like without checking financials.
- Do not overpay for a good story.
- Do not ignore debt in turnarounds or cyclicals.
Questflow Use
In Questflow, this skill is best used as a consumer/growth discovery and watchlist module.
What ships with it
1 file 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.
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 · 54 lines · 42 tokens per session scan A 83bef3efe0a7
lynch-growth is a skill published in the GitHub repository questflowai/investorskills (1,849 stars, last pushed 19d ago), licensed MIT. It adds 42 tokens to every session and 387 once invoked, about $0.0002 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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