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'.
Install
$ agentstack add skill-mariusgithub13-open-deal-kit-multiple-sanity-checker ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-mariusgithub13-open-deal-kit-multiple-sanity-checker) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →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:
- The implied multiple, calculated and shown.
- Whether that's reasonable, rich, or cheap for a business with this growth, margin, and risk profile, with reasoning.
- What I'd be implicitly betting on if I paid this.
- 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
- Source: MariusGithub13/open-deal-kit
- License: MIT
- Homepage: https://os.devaland.com/sample-brief
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.