# What is KISS Agreement (Keep It Simple Security)? Definition & Technical Mechanics

> **Source:** [SPIDITS AI Startup & Venture Intelligence Glossary](https://spidits.com/startup-glossary)  
> **Category:** Funding  
> **Canonical Citation:** [https://spidits.com/startup-glossary/kiss-agreement](https://spidits.com/startup-glossary/kiss-agreement)

## Definition
A KISS Agreement (Keep It Simple Security) is a standardized open-source financing document created by 500 Startups that offers pre-seeded convertible equity or debt terms with investor-friendly investor protections.

## Architectural Mechanics & Deep Dive
A KISS Agreement (Keep It Simple Security) is a standardized open-source financing document created by 500 Startups that offers pre-seeded convertible equity or debt terms with investor-friendly investor protections.

## Industry Applications & Real-World Use Cases
Early-stage angel and accelerator investments, open-source fundraising contracts, and international seed syndicates.

## Frequently Asked Questions

### What are the two versions of a KISS agreement?
500 Startups provides a Debt Version (carrying a maturity date and interest rate) and an Equity Version (similar to a SAFE with no interest rate).

### How does a KISS differ from a YC SAFE?
KISS agreements include explicit investor information rights and major investor status provisions by default.

## Related Terminology
- [safe-agreement](https://spidits.com/startup-glossary/safe-agreement)
- [convertible-note](https://spidits.com/startup-glossary/convertible-note)
- [seed-round](https://spidits.com/startup-glossary/seed-round)

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*From the SPIDITS AI Knowledge Base (311+ terms indexed). Explore full technical definitions: [https://spidits.com/startup-glossary](https://spidits.com/startup-glossary)*