# Ossus

**Canonical:** https://apis.io/providers/ossus/  
**Website:** https://www.ossus.com  
**APIs profiled:** 0

Ossus builds AI-native intelligence for cultural institutions, starting with libraries. Its flagship product is Ossus ILS, a modern integrated library system that unifies cataloguing, circulation, acquisitions, analytics, and patron discovery in one interface, with an AI copilot that drafts MARC records, subjects, and classifications for librarian approval. A lighter product, Librar, targets school libraries with fast mobile setup. AI add-ons cover camera-based shelf inventory, vendor comparison for purchasing, and grant finding. Ossus emphasizes privacy-first design: it does not train on or sell customer data and works only with catalogue metadata rather than borrower records. Ossus is a Y Combinator (Winter 2026) company based in San Francisco.

## Kin Score — 7.6 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 7.6).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.4 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

Regulatory layer — **Education & Research**: 20.4 (matched via tags).

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (2)

- **Ossus Domain Security** — TLSv1.3 · HSTS · DMARC
- **Ossus Trust Center** — SOC 2, ISO 27001

## Tags

Company, Libraries, Library Management, Integrated Library System, Cataloguing, MARC, Cultural Institutions, Artificial Intelligence, Education

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