Quick answer
There is no single US checklist that decides every contract. Formation, consideration or substitutes, capacity, authority, definiteness, lawful purpose, required writings or signatures, defenses, public policy, statutory protections, and remedies vary by jurisdiction and contract type. One provision may fail while the rest survives.
Questions counsel will separate
- Which law applies to formation and the disputed provision?
- Did the parties objectively assent to the same terms?
- Did each signer have authority and legal capacity?
- Does applicable law require a writing, signature, disclosure, notice, or form?
- Is the obligation definite enough to apply with the surrounding evidence?
- Is there consideration or another recognized basis for enforcement?
- Do fraud, misrepresentation, mistake, duress, unconscionability, illegality, or public policy matter?
- Did modification, waiver, course of performance, breach, cure, or limitation periods change the claim?
- Does severability preserve other terms?
Formation is proved from the record
An enforceability review starts with what each side objectively communicated and did. A signed document can be strong evidence, but some agreements form through an exchange of messages, an accepted purchase order, click-through assent, or performance. Other transactions require formalities that conduct alone may not satisfy.
For sales of goods, UCC section 2-204 states a flexible formation framework and recognizes that a contract can exist even when the exact moment of formation is undetermined. UCC section 2-201 supplies a writing rule for certain sales of goods and includes specific exceptions. These model provisions must be checked against the state's enacted version and should not be assumed to govern services, real estate, employment, guarantees, or corporate transactions.
Example: a buyer emails "approved" after receiving a proposal, and the vendor starts work. The result may depend on whether the proposal contained the complete terms, whether the email objectively accepted them, whether later terms conflicted, who had authority, and what law governs. The word "approved" alone does not answer every formation question.
Consideration, authority, and capacity are different issues
Consideration asks what legally recognized exchange or substitute supports the promise under applicable law. Authority asks whether the person who acted could bind the named party. Capacity asks whether the signer had the legal ability to contract. Evidence that resolves one does not automatically resolve the others.
For a company agreement, verify the entity's exact legal name, the signer's role, board or member approvals where required, and any conditions to authority. For a guaranty, real-estate transfer, regulated consumer agreement, or other formal transaction, identify special writing, signature, disclosure, witnessing, notarization, or delivery requirements from the governing jurisdiction.
Electronic form is a separate issue
The federal E-SIGN Act, 15 U.S.C. section 7001, generally prevents covered records or signatures from being denied legal effect solely because they are electronic, subject to the statute's scope and exceptions. It does not make an otherwise invalid agreement enforceable or prove signer identity and authority.
Contract type matters
Rules for goods, real estate, employment, franchises, consumer transactions, guarantees, securities, and other regulated subjects can differ. For sales of goods, state enactments of the UCC address formation and modification; UCC section 2-209 is one example. Do not apply it automatically to another contract category.
Defenses and remedies change the practical answer
Even where an agreement formed, a party may raise fraud, misrepresentation, mistake, duress, unconscionability, illegality, lack of authority, or public policy. These labels have jurisdiction-specific elements. Build a fact record: who said what, what was disclosed, what opportunity existed to review, what alternatives were available, and how the disputed term operates.
Enforceability also can be provision-specific. A court may consider severability, refuse a particular remedy, or interpret an ambiguous term without discarding the entire agreement. A limitation period, notice condition, waiver, amendment, prior breach, or failure to mitigate may affect a claim even if the underlying promise is valid.
A useful pre-signing test
Ask whether an uninvolved reviewer can identify the parties, duties, price or pricing method, performance dates, acceptance method, incorporated documents, change process, default consequences, and exit route. Confirm that every exhibit exists and that negotiated edits appear in the final version. Then preserve proof of assent and delivery. This process cannot guarantee enforcement, but it exposes missing facts before they become litigation questions. For a related test of whether the terms are specific enough to operate, see what makes a contract too vague to sign.
Preserve the proof
Keep the final signed set, versions, exhibits, incorporated terms, authority records, delivery evidence, notices, amendments, and performance history. A signature page without the operative documents can leave the terms disputed.
Inkvex can quote and organize formation, signature, authority, notice, amendment, and remedy language for a first-pass with counsel. It cannot determine enforceability.
Inkvex provides legal information, not legal advice. Have qualified counsel apply current governing law to the agreement and facts.
Read the clause guides behind this article
The article explains the situation. These clause guides break down the exact provisions that usually create the leverage, risk, or negotiation pressure inside the contract.
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This article is for informational purposes only and does not constitute legal advice. For high-stakes agreements, consult a qualified attorney.