sieve YC Application

Spring 2025Active

sieve went through Y Combinator in the Spring 2025 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Spring 2025
Industry: B2BFinance and Accounting
Team size: 2
Status: Active
Launched: 2025

Founders

Nicole Lu
Savannah Tynan

What sieve does

sieve solves data cleaning for hedge funds and investment firms by letting them get clean data in four lines of code. Currently, their data pipelines have conditions that raise for human review, which literally send an email to engineers with data that needs to be reviewed. We provide an API that integrates directly into their existing pipeline - instead of raising for human review, they can send all the same information to our API and get clean, high-quality data back. By using our AI agents built specifically for financial data collection, along with expert-in-the-loop review, we provide our clients with clean, validated data at a scale and level of quality that wasn't achievable before.

sieve's YC application, reconstructed

Y Combinator application

sieve, Spring 2025 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

sieve

Describe what your company does in 50 characters or less.

AI + human review to solve data cleaning

What is your company going to make? Please describe your product and what it does or will do.

We're building an API and Excel integration that lets hedge funds and investment firms clean their financial data with a few lines of code. Our product flags data issues that normally trigger emails to engineers, but instead sends those to our AI agents and human reviewers who fix the data and return clean, validated results at scale.

Where do you live now, and where would the company be based after YC?

We live in New York, NY, and plan to base the company here after YC.

Explain your decision regarding location.

We're based in New York to be close to our target users - hedge funds and investment firms concentrated here. That proximity helps us understand their data problems and iterate quickly.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real sieve YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from sieve's public data (launch notes, founder backgrounds, product description). It shows how a company like sieve would present itself to YC, not the text they submitted.