# Perfect Day

**Canonical:** https://apis.io/providers/perfect-day/  
**Website:** https://perfectday.com/  
**APIs profiled:** 16

Perfect Day is a Berkeley, California food-technology company, founded in 2014, that makes animal-free dairy proteins with precision fermentation. Rather than farming cows, Perfect Day ferments microflora carrying milk's protein-coding genes to produce ProFerm, a non-animal whey protein with no lactose, cholesterol, hormones or antibiotics, which it sells business-to-business to consumer brands making ice cream, cream cheese, milk, yogurt, protein powders and bakery products. The company is a member of the Precision Fermentation Alliance. Perfect Day publishes no product or developer API; the single machine-readable surface it operates is the WordPress REST API (wp/v2) behind perfectday.com, which exposes anonymous read access to its blog posts, newsroom items, success stories, pages, media, taxonomies and site search, plus authenticated write operations via WordPress application passwords. This profile was enriched by the API Evangelist pipeline from that live surface.

## Kin Score — 25.5 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: falling (-11.4 from 36.9).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 17.6 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 37.5 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 30.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | verified |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (16)

- **Perfect Day Categories API** — WordPress REST `categories` resource on perfectday.com.
- **Perfect Day Comments API** — WordPress REST `comments` resource on perfectday.com.
- **Perfect Day Leader Category API** — WordPress REST `leader_category` resource on perfectday.com.
- **Perfect Day Media API** — WordPress REST `media` resource on perfectday.com.
- **Perfect Day Modal API** — WordPress REST `modal` resource on perfectday.com.
- **Perfect Day News API** — WordPress REST `news` resource on perfectday.com.
- **Perfect Day News Category API** — WordPress REST `news_category` resource on perfectday.com.
- **Perfect Day Pages API** — WordPress REST `pages` resource on perfectday.com.
- **Perfect Day Posts API** — WordPress REST `posts` resource on perfectday.com.
- **Perfect Day Search API** — WordPress REST `search` resource on perfectday.com.
- **Perfect Day Statuses API** — WordPress REST `statuses` resource on perfectday.com.
- **Perfect Day Success Story API** — WordPress REST `success_story` resource on perfectday.com.
- **Perfect Day Success Story Category API** — WordPress REST `success_story_category` resource on perfectday.com.
- **Perfect Day Tags API** — WordPress REST `tags` resource on perfectday.com.
- **Perfect Day Taxonomies API** — WordPress REST `taxonomies` resource on perfectday.com.
- **Perfect Day Types API** — WordPress REST `types` resource on perfectday.com.

## MCP servers (1)

- **Perfect Day MCP Server**

## Security (2)

- **Perfect Day Authentication** — http · 1 scheme
- **Perfect Day Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Food Technology, Precision Fermentation, Alternative Protein, Ingredients, Sustainability, Biotechnology, Consumer Packaged Goods, content-api, WordPress

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