One source of truth for every API your team ships.
Endrel pulls your scattered API documentation into a single, always-current workspace — imported straight from OpenAPI, Swagger, or Postman, and kept honest by AI that flags what's drifted out of date.
The first 10 founding teams use Endrel free and work directly with us to shape what we build next.
The problem
Your API docs exist. Finding the current version is the hard part.
Documentation lives in four places and agrees in none of them. By the time you find a spec, you can't trust it.
// lost
Buried in email
Specs land as attachments in a thread from three sprints ago that nobody can surface again.
// noise
Drowned in Slack
The link was shared once, scrolled past, and is now ten thousand messages deep.
// scattered
Tool sprawl
Postman here, Swagger there, a Notion page someone forgot — and no canonical home.
// stale
Quietly outdated
The endpoint changed last week. The doc didn't. QA finds out in production.
The cost: hours lost to searching, FE / BE / QA working off different truths, and features that ship slower than they should.
Why Endrel
A documentation tool that stays true after launch day.
Most API tools help you write docs. Endrel's job is keeping them findable, current, and trustworthy for the whole team — long after the first commit.
One canonical home
Every service, version, and endpoint in a single searchable workspace — so "where are the docs?" stops being a question.
Import & auto-sync
Bring in OpenAPI, Swagger, or Postman collections. When the spec changes, the docs follow — no manual copy-paste.
Built for the whole team
Front-end, back-end, and QA read from the same source. Comment inline and resolve mismatches without a meeting.
Access you control
Granular permissions per workspace and service. Share a public reference or keep an internal API locked down.
Search that finds it
Jump to any endpoint, parameter, or response by name. Stop grepping chat history for a URL.
Developer-native
A REST API, clean onboarding, and formats your team already uses. Endrel fits the workflow you have today.
AI Review
AI that reads your APIs and tells you what's wrong.
Centralizing docs is the start. Endrel's reviewer continuously checks your specs against each other and against your live endpoints, then surfaces the gaps before they reach a customer.
- Flags endpoints documented in one place but missing in another
- Catches response shapes that drifted from the published schema
- Spots inconsistent naming, auth, and error conventions across services
- Suggests clearer descriptions and missing examples as you go
Before you start
Questions teams ask first
What teams usually want to know before they bring their first API into Endrel.
01How is Endrel different from Swagger UI, Postman, or Confluence?
OpenAPI and Swagger describe an API contract, Postman helps teams work with requests and collections, and Confluence is a general knowledge base. Endrel brings those scattered sources into one API-specific workspace, keeps the documentation connected to the underlying spec, and gives development and QA teams the same current reference.
02Can I import my existing OpenAPI, Swagger, or Postman files?
Yes. Endrel is designed to start from the formats your team already maintains, including OpenAPI, Swagger, and Postman collections. You can bring existing specifications into a workspace instead of recreating every endpoint by hand.
03Is Endrel available now, or do I need an invitation?
Endrel is available now through Founding Access. You can create an account and enter the product directly; there is no waitlist or invitation step.
04What does Founding Access include?
The first 10 founding teams can use the current product free, share practical feedback directly with the founder, and influence what Endrel prioritizes next. Features are still being refined, so participating teams should expect the product to evolve.
05Is Endrel designed for internal APIs, public APIs, or both?
Both. Endrel is designed to keep internal API knowledge inside controlled workspaces and to support documentation intended for external consumers. Access can be managed around the workspace or service rather than forcing every API into the same visibility model.
Founding Access
Build the source of truth with us.
Founding Access is open to 10 teams. Create your workspace now, use Endrel free, and help shape what we build next.
Start with Founding Access