Ellipsus

Ellipsus is a collaborative writing platform built for creative and fiction writers, combining a modern text editor with granular, Git-style version control so authors can draft, branch, share, and merge work together across devices. Founded in 2022 and operated by a small distributed team across Berlin (Germany), Madrid (Spain), and Szczecin (Poland), the product threads collaboration through every stage of writing — organizing drafts, discussing feedback, tracking changes, and preserving public version history — with a writers-first, artist-ownership, anti-AI-generated-content stance. Ellipsus offers a free tier and a paid Plus license, and is backed by Speedinvest. It is added to the API Evangelist network as a company profile; no public developer API surface was found during enrichment.

Ellipsus is profiled on the APIs.io network. Tagged areas include Company, Collaborative Writing, Writing Tools, Content Creation, and Version Control.

Ellipsus’ developer surface includes signup flow, pricing, engineering blog, support, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.0/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyCollaborative WritingWriting ToolsContent CreationVersion ControlProductivitySaaS

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 19.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/ellipsus: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: ellipsus
name: Ellipsus
description: Ellipsus is a collaborative writing platform built for creative and fiction writers, combining a modern text
  editor with granular, Git-style version control so authors can draft, branch, share, and merge work together across devices.
  Founded in 2022 and operated by a small distributed team across Berlin (Germany), Madrid (Spain), and Szczecin (Poland),
  the product threads collaboration through every stage of writing — organizing drafts, discussing feedback, tracking changes,
  and preserving public version history — with a writers-first, artist-ownership, anti-AI-generated-content stance. Ellipsus
  offers a free tier and a paid Plus license, and is backed by Speedinvest. It is added to the API Evangelist network as a
  company profile; no public developer API surface was found during enrichment.
url: https://raw.githubusercontent.com/api-evangelist/ellipsus/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://ellipsus.com/share-image.jpg
tags:
- Company
- Collaborative Writing
- Writing Tools
- Content Creation
- Version Control
- Productivity
- SaaS
apis: []
common:
- type: Website
  url: https://ellipsus.com
- type: SignUp
  url: https://account.ellipsus.com/sign-up
- type: Login
  url: https://write.ellipsus.com/
- type: Pricing
  url: https://ellipsus.com/pricing
- type: Blog
  url: https://ellipsus.com/blog
- type: HelpCenter
  url: https://help.ellipsus.com
- type: Support
  url: mailto:support@ellipsus.com
- type: StatusPage
  url: https://status.ellipsus.com
- type: TermsOfService
  url: https://ellipsus.com/terms-of-service
- type: PrivacyPolicy
  url: https://ellipsus.com/privacy-policy
- type: DomainSecurity
  url: security/ellipsus-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence