Embedly
Two founders in Boston — far from the Silicon Valley spotlight — noticed that "embedding a link" on the web was a fragmented mess, built a meta-layer on an obscure protocol nobody had taken seriously, and quietly became the embedding engine running underneath LinkedIn, Reddit, and The New York Times for six years.
Sean Creeley · 13 min read
Embedly, YC Founder Story
Company: Embedly Founders: Sean Creeley (CEO) & Arthur "Art" Gibson (Co-founder) YC Batch: Winter 2010 Industry: Developer Infrastructure / Media Embedding Location: Boston, MA Status: Acquired by Medium (2016) Customers at peak: LinkedIn, Salesforce, Reddit, The New York Times, Microsoft Scale at peak: Close to 1 billion monthly impressions
The One-Line Summary
Two founders in Boston, far from the Silicon Valley spotlight, noticed that "embedding a link" on the web was a fragmented mess, built a meta-layer on an obscure protocol nobody had taken seriously, and quietly became the embedding engine running underneath LinkedIn, Reddit, and The New York Times for six years.
Lens 1, The Before State
Who Was Sean Creeley Before YC?
Unlike many YC founding stories built on dramatic pre-startup struggle, Sean Creeley's path into Embedly was the result of paying close attention to a small, unglamorous technical annoyance that almost nobody outside developer circles even knew existed.
Sean was a working technologist before Embedly, comfortable with Python, embedded in developer communities, and aware of a quietly growing standard called oEmbed, a protocol that let one website request embeddable representations of content (like a YouTube video or a Flickr photo) from another. The problem: oEmbed existed, but barely anyone implemented it well, and the libraries built around it only supported a tiny handful of providers.
His co-founder, Arthur "Art" Gibson, brought the steadiness that Sean would later describe, after their acquisition, as making him "the best co-founder and company man I know." That detail matters, Embedly wasn't built by two people chasing hype. It was built by two people who trusted each other enough to spend six years on infrastructure plumbing most users would never see.
The Personal Pain They Were Living
The frustration was structural, not personal trauma: embedding content on the web was a mess. If you wanted your website to show a rich preview of a YouTube link, a Tweet, or a SoundCloud track, you had to write custom integration code for every single provider. There was no single layer that handled it all. Developers were "reinventing the wheel with every new embed," as Sean put it years later when reflecting on why Embedly existed at all.
This is a different, and important, origin pattern for aspiring founders to study: not every great YC company comes from a founder's personal crisis. Some come from a founder noticing friction that an entire industry has simply normalized and stopped questioning.
Why They Weren't the "Obvious" YC Profile
Boston-based, non-flashy, building on top of an existing technical standard rather than inventing something from scratch, with a team size of exactly 2, Embedly didn't look like a unicorn-in-waiting. There was no previous exit, no Ivy League pedigree being waved around, no viral pre-launch buzz. It was two engineers who saw a gap in plumbing that the rest of the internet quietly tolerated.
Key Insight for Aspiring Founders
You don't need a dramatic origin story. You need a precise diagnosis. Embedly's founders didn't suffer from a broken industry, they simply refused to accept "that's just how embedding works" as an answer. Sometimes the founder advantage isn't pain, it's intolerance for unnecessary friction that everyone else has stopped noticing.
Lens 2, The Idea Origin
How the Idea Actually Emerged
Embedly's idea origin is one of the cleanest examples of a "standard-on-top-of-a-standard" strategy. The oEmbed protocol already existed, an open specification that let sites declare how their content should be embedded elsewhere. But individual implementations (like early Ruby and Python oEmbed libraries) only supported a handful of providers each, and most webmasters had to maintain their own patchwork list of regex-matched URLs for each new service they wanted to support.
Embedly's insight was simple but valuable: build the meta-layer. Instead of asking developers to maintain their own provider lists, Embedly maintained one comprehensive, constantly-updated catalogue covering more than 100 services, YouTube, Flickr, Hulu, Picasa, Ustream, Twitpic, Quantcast, CrunchBase, and dozens more, and exposed it through a single clean API.
The First Version Nobody Initially Noticed
In Embedly's earliest days, the product was narrow by design: take any URL, detect what kind of content it pointed to, and return a ready-to-embed representation automatically. No manual mapping. No per-provider integration work. Just a URL in, rich media out.
It wasn't a flashy consumer product. It wasn't going to trend on the front page of a news site. It was the kind of tool that, when it worked, was invisible, and when it was missing, was an annoying afternoon of someone's engineering time.
The Signal That Validated It
The validation came from developer communities adopting Embedly's data even when they weren't using Embedly's core product. As one independent developer documented in 2010 while building a Ruby oEmbed library: when his own implementation couldn't keep up with new provider URLs, he turned directly to Embedly's JSON catalogue of supported services and forked it into his own library, because Embedly's coverage was simply more complete than anything else available, including the standard's own reference implementations.
That's a powerful, under-the-radar form of product-market fit: other developers were building on top of your data even when they weren't your direct customer.
The Pattern This Follows
Embedly is a textbook example of the "unsexy infrastructure layer" archetype that recurs throughout YC's portfolio, similar in spirit to Stripe's approach to payments. The market doesn't reward the most visible problem; it rewards founders who correctly identify the boring, repeated task that thousands of other companies are quietly re-solving from scratch.
Lens 3, The Application Anatomy
What Made Embedly's Pitch Work
Embedly's application strength wasn't a dramatic market size claim, it was specificity and breadth of coverage, stated plainly: "Embedly provides a platform and suite of tools to make embedding and previewing links simple," supporting over 100 different websites and APIs, automatically converting links into embedded media on the fly.
You've read your 5 free stories this month.
The next YC application you write could be the one that gets in. Don't stop learning from the founders who already did it.
Cancel anytime. Built to save founders weeks of scattered research.
Unlock the Complete Learning Library →- ✓ 1000+ deeply-researched YC founder stories
- ✓ Unfiltered Lens breakdowns: what worked, what failed
- ✓ Complete database and founder playbook library
- ✓ Deep research, application learnings, and weekly additions
Free YC databases
Everything behind this page is in our open databases
This story is one slice of the data we keep open — batch lists, rejection case studies and launch playbooks, all free to read.
Database
YC Rejection Database →
Airbnb, Stripe, Reddit — founders who got rejected first, with every source linked.
Index
List of YC Companies →
Searchable index of YC alumni by batch, from Airbnb (W09) to the newest AI startups.
Database
YC Solo Founder Database →
20+ verified solo founders, their pre-YC traction and the exact application framing they used.
Browse all free YC databases → · or start on the YCInsight homepage
Go deeper on what Embedly did
Questions this story raises
- YC RFS Developer Tools — Specific Opportunities YC Wants Founders to Build
- How Indian Founders Should Frame Their YC Application
- Complete List of YC W24 Companies — Winter 2024 Batch
- How to Answer "What Is Your Company?" on the YC Application
- YC Application 2026: The Complete Checklist (20 Steps Before You Submit)
- How to Write the YC Application as a Solo Founder
Free tools for this stage
Start from the YCInsight homepage for every YC database, founder story and Q&A in one place.
Related founder stories
Keep reading — more YC founders from Winter 2010 and beyond.
Creative Market Founder Story: How Darius "Bubs" Monsef IV Built Creative Market (Winter 2010 YC Batch)
Three founders who thought they were "too old" and "not the right demo" for Y Combinator almost talked themselves out of applying — then got in with a color-palette community, were told by Paul Graham they could "change how the world looks," pivoted twice inside the batch, and sold the resulting marketplace for eight figures fifteen months after launch.
Vidyard
Two engineering students in Canada — one designing toilets, one sitting idle at BlackBerry — used a day-trading windfall to buy a house, build a video company nobody asked for, and accidentally discovered the real product while trying to solve their clients' confusion. Then they drove 1,200 miles with a car covered in stickers to crash a conference and corner a keynote speaker.
Treehouse
Ryan Carson watched developers graduate from college without knowing how to code for real jobs — so he spent 6 years building a blog audience first, then launched a product to that audience and hit $1.7M revenue in under 12 months, teaching over a million people to code before anyone in Silicon Valley thought online education could work.
inDinero
A 19-year-old CS student who had never held a real job, knew nothing about accounting, and dropped out of high school at 15 — built the "Mint.com for business," nearly destroyed it through arrogance, then pivoted her way to 2,686% revenue growth and the cover of Inc. magazine.
RentHop
Two MIT-trained quants looked at Craigslist — the most-visited, least-innovated website in America — and decided the apartment hunt didn't need disruption with venture-scale fireworks. It needed a better ranking algorithm, patient bootstrapping, and fifteen years of quietly outlasting better-funded competitors.
Beetailer
A self-taught Spanish developer from Seville moved to San Francisco with a brilliant idea at exactly the right moment — got into YC, hit real traction, mentored by legends — and then watched everything collapse when Facebook changed the rules overnight. What she built next was smarter, and what she learned is priceless.
More stories every week.
Get 2 free stories in your inbox each week.