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 greenblatt-special-situationsgit 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/greenblatt-special-situations)<a href="https://agentmods.dev/skills/questflowai/investorskills/greenblatt-special-situations"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/greenblatt-special-situations/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/greenblatt-special-situations"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/greenblatt-special-situations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00043 | $0.00364 |
| Opus 5 | $0.00022 | $0.00182 |
| Sonnet 5 | $0.00009 | $0.00073 |
| Haiku 4.5 | $0.00004 | $0.00036 |
Grade A, and why
greenblatt-special-situations 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 13d 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
Greenblatt Special Situations
Use this skill to apply Joel Greenblatt-style event-driven value: look where structural reasons force investors to sell or ignore securities, especially spinoffs, restructurings, merger securities, and overlooked quality-value combinations.
When To Use
- Spinoff or post-spinoff analysis
- Restructuring, rights offering, merger security, or stub analysis
- Magic Formula quality/value screening
- Forced-selling event review
Trigger phrases include Greenblatt, spinoff, special situation, magic formula, event-driven, stub, and forced selling.
Process
- Identify the event and why natural holders may sell.
- Separate parent, spin, stub, rights, or merger consideration.
- Underwrite business quality and normalized earnings.
- Compare valuation to hidden or standalone value.
- Define event catalyst and post-event shareholder base.
Output Format
# Greenblatt View: [Situation]
## Verdict
Buy / Watchlist / Event Too Crowded / No Mispricing / Pass
## Event Structure
## Forced-Selling Mechanism
## Standalone Value
## Quality / Earnings Power
## Catalyst
## Risks
Guardrails
- Do not buy every spinoff blindly.
- Do not ignore pro forma leverage.
- Do not assume event complexity equals value.
Questflow Use
In Questflow, this skill is best used for event-driven stock discovery and special-situation memo generation.
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.
- 13d ago First seen · 53 lines · 43 tokens per session scan A d4e8bb2d9d06
greenblatt-special-situations is a skill published in the GitHub repository questflowai/investorskills (1,849 stars, last pushed 20d ago), licensed MIT. It adds 43 tokens to every session and 364 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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