SAFE Agreement Checklist: 10 Things to Review Before You Sign
Most founders sign their first SAFE in under 10 minutes. They skim for the valuation cap, confirm it matches what was agreed verbally, and countersign. Everything else — the discount rate, the pro-rata rights, the MFN clause, the amendment provisions — goes unread.
That's how founders end up with side letters they forgot about surfacing in Series A due diligence, or pro-rata rights that crowd out institutional investors at exactly the wrong moment, or amendment provisions that give a single small angel de facto veto power over future rounds.
A SAFE is a short document — typically 5–8 pages. Reading it carefully takes 20 minutes. The consequences of the terms inside it last for the life of the company. This checklist gives you a systematic review process so nothing slips through.
In a survey of early-stage founders, over 60% reported signing SAFEs without reviewing every provision. The terms most commonly skipped: information rights, amendment thresholds, and side letter disclosures. These are also the terms most likely to cause problems at Series A.
Why Founders Need a Systematic Review Process
The SAFE was designed by Y Combinator to be simple. And it is — compared to a full equity term sheet with dozens of protective provisions, board compositions, and liquidation waterfall mechanics. But "simple" doesn't mean "consequence-free." Every provision in a SAFE was put there for a reason, and some provisions have outsized impact on your leverage at Series A and beyond.
Three things make SAFE review harder than it looks:
- Time pressure. Investors send documents during live negotiations. The moment you're in "closing" mode, your incentive is to sign quickly. That psychological pressure is exactly when careful review gets skipped.
- Anchoring on the headline number. Once a cap is agreed, founders mentally treat the deal as done. The rest of the document feels like boilerplate. It isn't.
- Non-standard modifications. The YC Post-Money SAFE is the standard, but investors regularly modify it. Some modifications are reasonable; others are investor-friendly changes dressed up in standard language. You need to know which is which.
The solution isn't becoming a lawyer. It's having a checklist you run on every SAFE before you countersign — regardless of time pressure, regardless of how small the check, regardless of how well you know the investor.
The 10-Point SAFE Review Checklist
Each item below identifies what to check, why it matters, what a red flag looks like, and what good terms look like. Run through all ten on every SAFE — including SAFEs from investors you trust.
Valuation Cap Amount vs. Stage Benchmarks
The cap directly sets the investor's ownership percentage at conversion. A $500K check at a $2.5M cap gives the investor 20% of your company. At a $5M cap, that same check gives 10%. The difference compounds through every future dilution event. See our negotiation guide for stage benchmarks and tactics.
Pre-seed caps: $4M–$8M depending on traction. Seed: $8M–$20M. The cap should imply <15% dilution per investor at your expected Series A raise. Run every cap through the dilution calculator before signing.
Any cap implying >20% dilution from a single check. A $500K check at a $2M cap. A cap that hasn't been updated since a verbal agreement made months earlier. Multiple SAFEs stacking to >30% combined dilution before Series A.
Discount Rate: Presence, Amount, and Interaction With Cap
A discount rate gives the SAFE investor a lower conversion price than Series A investors — as a reward for investing early. The SAFE converts at the lower of cap-implied price or discount-implied price. A high discount rate on a low cap is doubly punitive: both mechanisms can give the investor more shares than expected.
15–20% discount is standard market rate. YC Post-Money SAFEs often omit a discount when a cap is present — the cap is the investor's primary protection. If your SAFE has both a cap and a discount, confirm whether the investor gets whichever is more favorable.
Discount rates above 25% — this is aggressive. A discount rate with no cap (uncapped SAFE with discount) where the discount triggers at a very high Series A valuation. Any discount language that isn't the "lower of" construction — some non-standard SAFEs compound rather than compare.
Pro-Rata Rights: Scope and Threshold
Pro-rata rights let an investor maintain their ownership percentage by investing in your Series A. A low-cap SAFE with pro-rata means the investor owns a large percentage and gets the right to preserve it at the next round — which can crowd out institutional investors who need a minimum allocation to write a check.
Pro-rata is reasonable for lead investors and checks above $250K. "Major investor" thresholds that limit pro-rata to investors above a minimum check size are standard and appropriate. Pro-rata should be capped at the investor's post-conversion ownership percentage, not a fixed dollar amount that could exceed it.
Uncapped pro-rata rights on a very low valuation cap — the investor can demand a large Series A allocation. Pro-rata combined with information rights that could allow the investor to condition their participation. Any provision giving the investor super pro-rata (more than their proportionate share).
MFN Clause: Trigger Conditions and Carve-Outs
A Most Favored Nation (MFN) clause requires you to offer this investor better terms if you later issue a SAFE on more favorable terms. On the standard YC SAFE, MFN applies only to uncapped SAFEs — which is narrow and manageable. Non-standard MFN clauses can trigger across all SAFEs, retroactively lowering your effective cap across your entire round.
MFN only on uncapped SAFEs, as in the standard YC document. Clear carve-outs for equity rounds (Series A, B), employee options, and strategic partnership SAFEs. A defined notice period (30–60 days) for the investor to elect MFN treatment rather than automatic application.
MFN that applies to all subsequent SAFEs, not just uncapped ones. No carve-outs for strategic checks or bridge rounds. Automatic MFN application without investor notice or election — you could trigger it unknowingly. MFN that survives conversion into equity (extends beyond SAFE termination).
Conversion Mechanics: Trigger Events and Optional Conversion
The SAFE converts to equity at a "Next Equity Financing" — typically your Series A. The definition of that trigger matters. If it's too narrow, the SAFE might not convert when you expect. If it's too broad, it could convert prematurely at a bridge round you intended as a non-converting instrument.
Standard definition: next bona fide equity financing of >$1M (or a defined threshold). Conversion at the lower of cap-implied price or discount-implied price. Optional conversion at IPO or change of control — giving the investor the choice to convert or receive their investment back. Liquidation events that return the investment amount (not just equity).
Very low conversion trigger (e.g., >$100K) that could force conversion at a small bridge round. Mandatory conversion at IPO with no optionality. Dissolution events that pay only the original investment with no participation — meaning no upside in a liquidation if the SAFE hasn't converted. Any conversion trigger that's ambiguously worded (consult a lawyer or run AI review).
Board Seats and Information Rights
Standard YC SAFEs grant no governance rights before conversion — no board seats, no information rights, no consent rights. A SAFE that grants a board seat before conversion effectively gives an investor control before they've become a formal equity holder. That's a structural problem that can affect future institutional investment.
No pre-conversion board seat. Information rights (right to receive annual financials and cap table) are reasonable for checks above $500K. Observer rights (non-voting board attendance) are acceptable for lead investors at larger check sizes. All information rights should be subject to standard confidentiality obligations.
Any board seat right on a pre-conversion SAFE, regardless of check size. Information rights on small angel checks (<$50K). Broad information rights without confidentiality protections. Any provision granting consent rights over material business decisions before conversion — this is effectively veto power without equity risk.
Don't check these manually — let AI do it in 30 seconds
Upload your SAFE and Robaer.ai flags all 10 checklist items automatically. See the full analysis, term scores, and plain-English explanations before you sign.
Amendment Provisions: Consent Thresholds
SAFE amendment provisions define what percentage of SAFE investors must consent to modify the terms. If you're running a rolling close with 10–20 investors, amendment logistics matter. A threshold requiring unanimous consent from all SAFE holders means a single small-check angel can block a round-level amendment needed for your Series A.
The standard YC SAFE can be amended by the company and the investor individually — each SAFE is amended on its own. This avoids collective action problems entirely. If you have a multi-party amendment provision, look for a majority-in-interest threshold (50%+ by invested amount), not a headcount vote.
Unanimous consent requirements across all SAFE holders — one $10K check can veto a critical amendment. Headcount voting (one investor = one vote) rather than dollar-weighted voting. Amendment provisions that include investors who have already converted as part of the consent calculation.
Side Letter Existence and Terms
Side letters are separate agreements that run alongside a SAFE and modify its economics or grant additional rights. They're legal and used in standard practice — but they must be disclosed to subsequent investors and can create cap table complexity at Series A if institutional investors don't know they exist.
No side letter needed for most angel checks. Acceptable side letters: co-investment rights for future rounds, referral fee arrangements (properly documented), confidentiality of specific investor identity. Any side letter should be disclosed in your cap table management software and referenced in subsequent investor due diligence packages.
Side letters that modify the SAFE's conversion economics (effectively giving one investor better terms than others). Side letters that are undisclosed to the company's counsel. Any side letter from an investor who also intends to participate at Series A — lead investors will discover these in due diligence and may condition their term sheet on removal. Side letters granting information rights beyond what's in the SAFE itself.
Investor Entity and Wire Instructions
The SAFE names a specific legal entity as the investor. When the SAFE converts, that entity receives shares — not the individual who wrote the check. If the named entity is an SPV, a trust, or a fund vehicle that has since wound down, conversion mechanics get complicated. Wire instruction fraud is also real: verify bank details via a separate channel before wiring funds.
The investor entity should be a US legal entity (LLC, LP, or individual) in good standing. If the investor is investing through a foreign entity, confirm it's permissible for your company's jurisdiction. Wire instructions should be verified verbally or via encrypted email — not just from the PDF. Confirm the entity name matches what's on the cap table and any prior communications.
Investor entity that doesn't match prior communications. Foreign entities without prior confirmation of compliance. Wire instructions that arrive in a new email thread or from a different domain than prior correspondence (BEC fraud). Any investor who can't provide basic entity documentation (certificate of formation, EIN) on request.
Governing Law and Dispute Resolution
The governing law clause determines which state's law applies to disputes and where litigation would take place. Most startup SAFEs use Delaware or California law, which are well-understood by startup counsel. Non-standard governing law (New York, investor's home state, foreign jurisdiction) increases legal complexity and cost if a dispute arises.
Delaware law is the standard for Delaware-incorporated companies. California law is common for California-based companies and also well-understood. Dispute resolution in either state is acceptable. Arbitration clauses are common and generally acceptable as long as they don't waive your right to injunctive relief for IP matters.
Governing law in a foreign jurisdiction. Any waiver of jury trial without a clear arbitration alternative. One-sided dispute resolution provisions that require the company to pay investor legal fees regardless of outcome. Any indemnification clause in the SAFE that isn't mutual — this is non-standard and should be flagged immediately.
What an AI Review Catches in 30 Seconds
This checklist covers what to look for. Running it manually takes 20–30 minutes for a careful reader familiar with SAFE mechanics. For a first-time founder reviewing a SAFE for the first time, it takes longer — and the risk of misreading a provision is real.
Robaer.ai's AI reviewer is built to automate exactly this checklist. You upload your SAFE (PDF or text), and the AI parses every provision against the 10 categories above — flagging deviations from the YC standard, scoring terms from founder-friendly to investor-favorable, and writing plain-English explanations of what each clause actually means for your company.
What the AI Review covers automatically:
- Valuation cap extraction and dilution modeling at your expected Series A valuation
- Discount rate detection and interaction analysis with the cap
- Pro-rata right identification, scope review, and problematic combination detection
- MFN clause extraction and carve-out completeness check
- Conversion trigger analysis — definition, threshold, and optionality
- Board seat and information rights identification (should be absent on standard SAFEs)
- Amendment provision analysis — consent threshold and voting mechanism
- Side letter reference detection in the primary document
- Governing law and dispute resolution clause review
- Full document comparison against YC Post-Money SAFE standard — every deviation flagged
The AI review doesn't replace a lawyer for complex or non-standard SAFEs. But for the 80% of SAFEs that are close-to-standard YC documents with minor modifications, it catches everything on this checklist in under a minute — before you sign, not after.
If you're choosing between a SAFE or a convertible note and haven't decided yet, read that comparison first. If you're about to negotiate the terms, our valuation cap negotiation guide covers the mechanics, benchmarks, and tactics in detail. Once you have a document in hand, this checklist is the last step before you sign.
Tools and Resources
Everything you need to review, model, and understand your SAFE before signing: