Freedom251 › API Documentation Tools
Endrel
What Endrel is
Endrel is a hosted workspace for API documentation, with searchable specifications and AI review for documentation drift. It imports OpenAPI, Swagger, and Postman collections, then rechecks specifications when they change. The reviewer flags schema drift, missing endpoints, inconsistent conventions, breaking changes, and missing examples. Front-end, back-end, and QA teammates can comment on endpoints, flag mismatches, and resolve them inline. Permissions can be set at workspace and service levels, with public references or restricted internal APIs; the product also provides a REST API. The free Sandbox plan includes one workspace, three projects per workspace, four members per workspace, and one environment per workspace, but excludes GraphQL support, live API testing, and global search. Localhost costs ₹1,499/mo or ₹14,990/yr and adds GraphQL support and live API testing, but not global search. Founding Access is free for the first 10 teams; the maker has not promised long-term pricing or lifetime-free access. Endrel identifies front-end developers, back-end engineers, QA engineers, and tech leads on API product teams as intended users.
Who it suits
It suits front-end, back-end, and QA teams, as well as tech leads, working on products that ship APIs. Teams should weigh the Sandbox limits and the maker's stated uncertainty about long-term pricing.
What it does well
- Imports OpenAPI, Swagger, and Postman collections.
- Rechecks specifications when they change.
- Supports inline endpoint comments and mismatch resolution.
- Provides workspace- and service-level permissions.
What to know first
- Sandbox excludes GraphQL support and live API testing.
- Sandbox does not include global search.
- Long-term pricing and lifetime-free access are not promised.
Limits
Sandbox is limited to one workspace, three projects per workspace, four members per workspace, and one environment per workspace. It has no GraphQL support, live API testing, or global search. Localhost includes GraphQL support and live API testing but still has no global search.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Sandbox | Free Forever · 1 workspace · 3 projects/workspace · 4 members/workspace (3+1) · 1 environment/workspace · no GraphQL support · no live API testing · no global search | Free |
| Localhost | ₹1,499/mo; annual ₹14,990/yr · 3 workspaces · 5 projects/workspace · 10 members/workspace (9+1) · 3 environments/workspace · GraphQL support · live API testing · no global search | ₹1,499 a month |
| Staging | ₹4,999/mo; annual ₹49,990/yr · 20 workspaces · 20 projects/workspace · 30 members/workspace (29+1) · unlimited environments/workspace · GraphQL support · live API testing · global search | ₹4,999 a month |
As endrel.com lists them, read 4 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://endrel.com/.
- Choose the free Sandbox plan or a paid plan.
- Use the web platform or API.
- Import an OpenAPI, Swagger, or Postman collection.
- Invite teammates to comment on endpoints and review mismatches.
Verdict
Endrel brings specification imports, drift review, and team collaboration into a hosted API documentation workspace. The free Sandbox has defined limits, while the maker has not promised long-term pricing or lifetime-free access.
Questions
Is Endrel free?
Yes. Sandbox is billed Free Forever. Founding Access is also free for the first 10 teams, but the maker has not promised long-term pricing or lifetime-free access.
What does Endrel cost?
Localhost costs ₹1,499/mo or ₹14,990/yr. Staging costs ₹4,999/mo or ₹49,990/yr.
Which platforms does Endrel support?
Endrel is available on web and through an API.
What can teams import?
Endrel lists OpenAPI, Swagger, and Postman collections as supported import formats.
Who leads Endrel?
Endrel says it is founder-led by Nil Patel.
What limits apply to Sandbox?
Sandbox includes one workspace, three projects per workspace, four members per workspace, and one environment per workspace. It excludes GraphQL support, live API testing, and global search.
Facts from Endrel's own pages
- Access
- Endrel describes granular permissions at workspace and service levels, with options for public references or restricted internal APIs. · endrel.com, 4 Oct 2026
- AI data handling
- Endrel says it has not published a blanket no-training commitment or final model-provider policy and advises against importing secrets or production credentials during Founding Access. · endrel.com, 4 Oct 2026
- AI review
- The reviewer flags schema drift, missing endpoints, inconsistent conventions, breaking changes, and missing examples. · endrel.com, 4 Oct 2026
- Audience
- Endrel identifies front-end developers, back-end engineers, QA engineers, and tech leads on product teams shipping APIs as its intended users. · endrel.com, 4 Oct 2026
- Availability and limits
- Founding Access is open to the first 10 teams for free; the maker says long-term pricing and lifetime-free access have not been promised. · endrel.com, 4 Oct 2026
- Founder
- Endrel says it is founder-led by Nil Patel. · endrel.com, 4 Oct 2026
- Imports and sync
- It imports OpenAPI, Swagger, and Postman collections and rechecks specifications when they change. · endrel.com, 4 Oct 2026
- Integrations
- The maker lists OpenAPI, Swagger, and Postman as supported import formats; no other integrations are stated on the pages reviewed. · endrel.com, 4 Oct 2026
- Product
- Endrel brings API documentation into a searchable workspace and uses AI review to flag documentation drift. · endrel.com, 4 Oct 2026
- REST API
- The product describes itself as developer-native and says it provides a REST API. · endrel.com, 4 Oct 2026
- Security
- The privacy policy says safeguards include encryption in transit and access controls, and notes it cannot guarantee absolute security. · endrel.com, 4 Oct 2026
- Support
- The privacy policy lists [email protected] for questions, requests, and support inquiries. · endrel.com, 4 Oct 2026
- Team collaboration
- Front-end, back-end, and QA teams can comment on endpoints, flag mismatches, and resolve them inline. · endrel.com, 4 Oct 2026
Where Endrel stands on Freedom251
- API Documentation Tools#8 of 27