Dessaigne defines developer tools broadly, from IDEs and APIs to frameworks and infrastructure. He says runtime tools can be especially compelling because customers depend on them and usage can grow with their own businesses. For open source libraries and frameworks, monetization can be difficult, so hosting is one option. With crowded areas such as LLM observability, founders should be ready to differentiate or change direction.
How To Start A Dev Tools Company
Speaker
Nicolas Dessaigne, YC group partner and Algolia co-founder and former CEO, explains how to start and grow a developer tools company in a YC Startup School talk.
Dessaigne recommends starting with two activities: building and talking with users. Make a quick prototype, expect to discard much of the code, and share it before it feels finished. Aim to be much better at one small job for a specific customer; Algolia began as a minimal autocomplete and secured a $2,000 monthly contract after a simple command-line demo. Avoid hiring before you know the product provides value.
Founders should reach out to developers directly, starting with colleagues and friends of friends, and personalize their messages. Dessaigne recommends Show HN for launching, explaining what is new plainly, and responding thoughtfully to comments. Segment and Ollama used repeated Hacker News launches to gauge interest and build momentum. Helping customers implement a product, as Stripe did early on, can speed up learning.
Dessaigne says open source is often expected for libraries and frameworks and can build awareness, differentiation, and enterprise trust. Possible revenue models include hosted cloud services and open-core enterprise features such as SSO and audit logs; he cautions against relying on support contracts. Non-open-source tools often charge by usage or offer tiers for individual developers, teams, and enterprises. Founders should lead sales themselves and, as a rule of thumb, wait until about $1 million ARR to hire a first salesperson.
Build awareness by being helpful in developer communities and launching regularly. Treat documentation as part of the product, and have engineers contribute to it and provide support so they learn directly from customer problems. Dessaigne recommends founders lead marketing and use the engineering team before hiring dedicated developer advocates, which he says often makes sense around Series A or later.
Takeaways
- Start with a real developer problem and learn by building and speaking with users.
- Ship a rough prototype early; keep the small parts customers value and refine them.
- Reach out personally and launch repeatedly to find users and test demand.
- Choose open source and monetization based on the product and its audience.
- Founders should sell and market early, with engineers close to documentation and support.
Mentioned in this talk
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What was claimed 10
- featureExa Search API: Search API used by millions of developers to build search in apps and websites
“used by millions of developers to build a great search experience”
YouTube Unverified1 source· Talk
- builtAlgolia built Exa Search API
“Algolia is a search API used by millions of developers.”
YouTube Unverified1 source· Talk
- previously atNicolas Dessaigne previously at AlgoliaCEO
“I was the co-founder and CEO of Algolia.”
YouTube Unverified1 source· Talk
- foundedNicolas Dessaigne founded Algoliaco-founder
“I was the co-founder and CEO of Algolia.”
YouTube Unverified1 source· Talk
- role atNicolas Dessaigne is group partner at
Y Combinator
“I'm a group partner here at YC.”
YouTube Unverified1 source· Talk
- metricAlgolia: First customer contract: $2,000 per month
“That was enough to close a $2,000-a-month contract.”
YouTube Unverified1 source· Talk
- feature
Ollama: Helps companies run LLMs on their own machines
“Ollama helps companies run LLMs on their own machines.”
YouTube Unverified1 source· Talk
- metric
Airbyte: Received many community-contributed connectors
“Airbyte got a lot of connectors contributed by the community.”
YouTube Unverified1 source· Talk









