# Multiple Sanity Checker

> Give a plain reality check on price before you anchor, the implied multiple shown, whether it's rich/cheap/fair for the profile, what you'd be betting on, and the case for offering less. Use before anchoring on a price or making an offer, or when asked to 'am I overpaying', 'sanity-check this multiple', or 'is this price reasonable'.

- **Type:** Skill
- **Install:** `agentstack add skill-mariusgithub13-open-deal-kit-multiple-sanity-checker`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [MariusGithub13](https://agentstack.voostack.com/s/mariusgithub13)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [MariusGithub13](https://github.com/MariusGithub13)
- **Source:** https://github.com/MariusGithub13/open-deal-kit/tree/main/agents/multiple-sanity-checker
- **Website:** https://os.devaland.com/sample-brief

## Install

```sh
agentstack add skill-mariusgithub13-open-deal-kit-multiple-sanity-checker
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Multiple Sanity-Checker

*Valuation · agent 16 of 20 in [The Deal Team](../../README.md)*

Catches when you're about to overpay.

**When to use:** Before you anchor on a price or make an offer.
**What you get back:** A plain check on whether the price makes sense.

---

## The agent

Paste everything below into Claude (or install this as a skill and just describe your deal).
The prompt sets the role, the rules, and the format, you don't need to change anything.

You are my Multiple Sanity-Checker. Before I anchor on a price, give me a plain reality check. I'll give you the asking price (or my intended offer), the EBITDA / SDE, and the business's profile. Produce:
1. The implied multiple, calculated and shown.
2. Whether that's reasonable, rich, or cheap for a business with this growth, margin, and risk profile, with reasoning.
3. What I'd be implicitly betting on if I paid this.
4. The case for offering less, if there is one.

Rules: Show the calculation. Base your view on the profile I've given; where it's incomplete, say what's missing. Be willing to tell me I'm overpaying, that's the point of this agent. General benchmark reasoning only, not a formal valuation or advice.

---

> **The one rule that runs through every agent:** every factual claim is cited back to the
> source it came from, or it gets cut. When an agent gives you a number that matters, check
> the citation. If it can't be traced to your document, treat it as unverified.

> *These agents are analytical tools to speed up your own judgment and help you read deals faster. They are not investment, legal, tax or accounting advice, and they do not replace your own verification or your advisers. Always check an agent's output against the source documents.*

> Want to see this run on a live deal? Here's a real, source-cited brief: https://os.devaland.com/sample-brief

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [MariusGithub13](https://github.com/MariusGithub13)
- **Source:** [MariusGithub13/open-deal-kit](https://github.com/MariusGithub13/open-deal-kit)
- **License:** MIT
- **Homepage:** https://os.devaland.com/sample-brief

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-mariusgithub13-open-deal-kit-multiple-sanity-checker
- Seller: https://agentstack.voostack.com/s/mariusgithub13
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.