About Endrel
We build the home your API docs never had.
Endrel started from a frustration every developer knows: the documentation exists somewhere, but finding the version you can actually trust costs you half an afternoon. We thought that was worth fixing properly.
places the average team's API docs are scattered across
source of truth Endrel replaces them with
manual copy-pastes needed to keep docs in sync
Our story
Born from a search that took too long.
Endrel began with a recurring scene on a product team: a back-end engineer ships an endpoint, drops the spec in a Slack thread, and moves on. A week later the front-end developer needs it, can't find it, and rebuilds half the integration from guesswork. QA tests against a third version that no longer exists. Everyone is working hard — off documentation that quietly disagreed.
The tools to write API docs are excellent. What was missing was a place to keep them: one home that imports specs from wherever they already live, stays in sync as APIs change, and tells you when something has drifted. So we set out to build it.
Today Endrel is in early access, working closely with the first teams to get the details right. We'd rather earn a small group's trust completely than ship something loud and shallow.
What we believe
Principles we build on.
The values that guide every product decision we make.
Documentation is infrastructure
Docs aren't an afterthought to ship once and forget. Treated as living infrastructure, they save every team that depends on them.
One source of truth, always
If there are two answers to "what does this endpoint return," there are zero. We optimize relentlessly for a single, current truth.
Meet developers where they are
We import the formats you already use and fit the workflow you already have. Good tools adapt to teams, not the reverse.
Earn trust with accuracy
A doc tool is only as valuable as it is correct. Our AI review exists to keep what you read honest.
Quiet by default
We notify you when something genuinely needs attention — and stay out of the way the rest of the time.
Build with our users
Early access isn't a marketing stage for us. The teams using Endrel now shape what it becomes.
FAQ
Common questions
Who is Endrel for?
Product teams shipping APIs — back-end engineers, front-end devs, QA, and tech leads who are tired of docs scattered across Slack, Confluence, and Postman.
How long is the wait?
We're rolling out in small cohorts. Most teams hear back within a few weeks. Founding members on the list get first access as seats open.
Is there a cost to join the waitlist?
No. Joining is free. When you're invited, you can start on our Free plan or upgrade to Pro with founding-member pricing.
Can I bring my whole team?
Yes. When you get access, you can invite teammates. We recommend starting with whoever owns API docs today.
Join us early
Help shape the source of truth.
We're onboarding teams one at a time. If scattered API docs slow you down, we'd love to have you in the first group.