# Microsoft Yammer

**Canonical:** https://apis.io/providers/microsoft-yammer/  
**Website:** https://engage.cloud.microsoft/  
**APIs profiled:** 10

APIs for Yammer (now Viva Engage) enterprise social networking platform providing access to messages, groups, users, and networks.

## Kin Score — 33.2 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 33.2).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 51.1 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 26.2 |
| Commercial Clarity | 36.8 |
| Access Clarity | 36.8 |

## Agent readiness — 29.1 (agent-aware)

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

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (10)

- **Yammer REST API** — The Yammer REST API (now Viva Engage) provides access to enterprise social networking features including messages, groups, users, and networks. Developers can post messages, man...
- **Microsoft Yammer Files API** — The Files API from Microsoft Yammer — 1 operation(s) for files.
- **Microsoft Yammer Groups API** — The Groups API from Microsoft Yammer — 2 operation(s) for groups.
- **Microsoft Yammer Messages API** — The Messages API from Microsoft Yammer — 12 operation(s) for messages.
- **Microsoft Yammer Networks API** — The Networks API from Microsoft Yammer — 1 operation(s) for networks.
- **Microsoft Yammer Search API** — The Search API from Microsoft Yammer — 1 operation(s) for search.
- **Microsoft Yammer Subscriptions API** — The Subscriptions API from Microsoft Yammer — 2 operation(s) for subscriptions.
- **Microsoft Yammer Threads API** — The Threads API from Microsoft Yammer — 1 operation(s) for threads.
- **Microsoft Yammer Topics API** — The Topics API from Microsoft Yammer — 1 operation(s) for topics.
- **Microsoft Yammer Users API** — The Users API from Microsoft Yammer — 5 operation(s) for users.

## Agentic access (1)

- **Microsoft Yammer Agentic Access** — 33 operations · 12 acting

## Security (2)

- **Microsoft Yammer Authentication** — oauth2 · 1 scheme
- **Microsoft Yammer Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Microsoft Yammer Plans Pricing**

## Tags

Enterprise Social, Microsoft, Social Networking, Viva Engage, Yammer

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