Turn any agent into a domain expert.
For the facts your agent has to get right.
DEX is short for domain experts. It gives your AI agent (the AI system that does work for you) a real domain expert to call.
Three domains live. More on the way.
A source on every answer, or it's free.
AI agents are capable, but no one ever taught them the specifics of a real profession. DEX gives your agent an expert's curated material to draw on, and every answer comes back with a source you can check. When the material can't back an answer, your agent says so, and that answer is free.
3 expert packs live · every answer shows its source · 18-question live test: all 3 trap questions refused · refusals always $0.00
The bigger idea: anyone who knows a field cold can package that knowledge for agents to use, and one person can direct a fleet of agents.
You're in the queue. We onboard a few people at a time, so keep an eye on your inbox.
We onboard in small batches. Your invite email contains your beta key, your endpoint, and a two-line quickstart.
Lock the founding rate — today's $0.02 / $0.10 per cited answer, held for founding seats. $5 when we invoice, nothing today, no card.
Noted. You're marked down for a founding seat.
Something broke. Email hello@dexforagents.com and we'll add you by hand.
Watch a real recorded session. An agent asks a question and the expert's material answers, with the source attached.
❯ What weekly growth rate does YC consider good for an early startup?
Paul Graham's guidance, cited in the sources: "a good growth rate during YC is 5 to 7% a week. If you can hit 10% a week you're doing exceptionally well" [95659a15f75d] — roughly 20–50% month-over-month [95659a15f75d].
Notable: as of 2024, both the summer and fall YC batches averaged 10% week-on-week growth across their entire cohorts — "I don't think [that] ever happened before on average" [6956783717a03967].
SOURCE: YC Startup Library · PG growth benchmarks + 2024 batch data · chunks 95659a15f75d +1 · GROUNDED · 4.6s · $0.02
WHAT YOU GET
Each DEX expert pack (one field's knowledge your agent can call) does three things for you.
An answer from a real domain expert.
Your agent works from what someone in the field actually knows, so you stop getting confident filler on the questions that matter.
You can check every answer.
Each one shows the exact source it came from, so you can verify it in seconds instead of taking it on faith.
It won't bluff.
When the source can't back an answer, the pack says so instead of making something up. That answer is always free.
Proof you can replay
Nine real exchanges from the live packs. Click any row to replay it at recorded pace.
ALL SESSIONS RECORDED 2026-07-07 · TRIMMED FOR LENGTH · TRANSCRIPTS VERBATIM
❯ Can an examiner combine two references to reject my claim as obvious?
THE COMBINATION MUST BE RATIONALLY SUPPORTED — the examiner must present a convincing line of reasoning why a person skilled in the art would combine the references [c7c19f25050d].
IT CANNOT RENDER THE PRIOR ART INOPERABLE — the combination cannot change the primary reference's principle of operation [ce9c25703350, a82be9fd6403].
YOUR RESPONSE STRATEGY MATTERS — you cannot defeat a multi-reference rejection by attacking references in isolation; address the combination itself. …
SOURCE: MPEP §2143.01 combining references · chunks ce9c25703350 +2 · GROUNDED · 6.0s · $0.10
Every [bracketed] key is a citation: a stable chunk ID your agent can resolve to the exact source passage.
Marketplaces have ratings. DEX packs have receipts.
18 questions. 3 traps. 3 refusals. $0 charged.
Retrieval and evidence-gating by DEX; answers generated by Claude over the pack corpus. Median 8.4s on the 18-question eval (2026-07); the full per-question log ships with the beta docs.
FROM THE FOUNDER
DEX is built by one founder. No user reviews yet. The ★ row marks packs verified against our published eval, not user opinion. What it shows instead: nine recorded sessions and an 18-question live eval where all 3 trap questions were refused at $0. Every exchange in the console is a real recorded session. Questions?
PRIVATE BETA · ONBOARDED IN SMALL BATCHES
Get one of the first seats.
It's free during beta. Come with a question your agent keeps getting wrong, and we'll point it at a pack.
You're in the queue. We onboard a few people at a time, so keep an eye on your inbox.
We onboard in small batches. Your invite email contains your beta key, your endpoint, and a two-line quickstart.
Lock the founding rate — today's $0.02 / $0.10 per cited answer, held for founding seats. $5 when we invoice, nothing today, no card.
Noted. You're marked down for a founding seat.
Something broke. Email hello@dexforagents.com and we'll add you by hand.
DEX is built by one founder. Every exchange in the console is a real recorded session. Questions? hello@dexforagents.com