# Ninety.io

**Canonical:** https://apis.io/providers/ninetyio/  
**Website:** https://www.ninety.io/  
**APIs profiled:** 7

Ninety.io (Ninety) is a software platform for implementing the Entrepreneurial Operating System (EOS). It gives founders and leadership teams purpose-built tools for the Accountability Chart, the Vision/Traction Organizer (V/TO), quarterly Rocks, the weekly Scorecard, To-Dos, the Issues List, and EOS meeting rhythms such as the Level 10 meeting. Ninety exposes a REST Public API (v1) at api.public.ninety.io authenticated with per-user Personal Access Tokens, giving programmatic create/read/update/delete access to To-Dos, Issues, Rocks, Milestones, Scorecard measurables (KPIs, scores, notes), Teams, and Users.

## Kin Score — 46.7 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 46.7).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 50.6 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 49.4 |
| Commercial Clarity | 46.1 |
| Access Clarity | 46.1 |

## Agent readiness — 33.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (7)

- **Ninety.io Issues API** — The Issues API from Ninety.io — 3 operation(s) for issues.
- **Ninety.io Milestones API** — The Milestones API from Ninety.io — 2 operation(s) for milestones.
- **Ninety.io Rocks API** — The Rocks API from Ninety.io — 3 operation(s) for rocks.
- **Ninety.io Scorecard API** — The Scorecard API from Ninety.io — 5 operation(s) for scorecard.
- **Ninety.io Teams API** — The Teams API from Ninety.io — 1 operation(s) for teams.
- **Ninety.io To-Dos API** — The To-Dos API from Ninety.io — 3 operation(s) for to-dos.
- **Ninety.io Users API** — The Users API from Ninety.io — 1 operation(s) for users.

## MCP servers (1)

- **Ninety.io MCP Server**

## Agentic access (1)

- **Ninetyio Agentic Access** — 25 operations · 19 acting · 19 human-in-the-loop

## Security (3)

- **Ninetyio Authentication** — http · 1 scheme
- **Ninetyio Domain Security** — TLSv1.3 · HSTS · DMARC
- **Ninetyio Trust Center** — trust center published

## Tags

Company, EOS, Entrepreneurial Operating System, Business Management, Meetings, Productivity, Scorecard, Team Management, Goal Tracking

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/ninetyio/). Scores are computed from the provider's own public artifacts under a published rubric.