Spiber

Spiber Inc. is a Japanese biotechnology and advanced-materials company founded in 2007 and headquartered in Tsuruoka, Yamagata Prefecture, Japan. Spiber develops Brewed Protein materials — structural proteins produced by precision fermentation of plant-derived sugars using engineered microbes, then spun into fibers, resins, and films as animal-free, petroleum-free alternatives to silk, wool, cashmere, leather, and synthetic polymers. The company operates fermentation plants in Japan, Thailand, and the United States and supplies apparel, outdoor, automotive, and consumer brands, alongside a research program in synthetic biology, polymer science, and life-cycle assessment. Spiber is a materials manufacturer rather than a software vendor and publishes no developer program, developer portal, SDKs, or product API; the only machine-readable HTTP surface it serves is the read-only WordPress REST content API behind its corporate website.

Spiber publishes 1 API on the APIs.io network. Tagged areas include Company, Biotechnology, Materials Science, Synthetic Biology, and Manufacturing.

Spiber’s developer surface includes engineering blog and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.1/100 emerging ▬ flat Agent 9/100 agent aware Full breakdown ↓
scored 2026-09-02 · rubric v0.18.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Biotechnology Materials Science Synthetic Biology Manufacturing Sustainability Textiles Precision Fermentation Japan Content

Kin Score

Kin Score How this is scored →
scored 2026-09-02 · rubric v0.18.0

Composite quality — 15.1/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.9 / 20

Access Clarity 2.1 / 20

Operational Transparency 0.3 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 9/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/spiber: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Spiber Content API (WordPress REST)

The read-only WordPress REST API that backs spiber.inc. The service names itself "Spiber API" in its own discovery document and is referenced from spiber.inc/robots.txt as the o...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Documented rate limits and quota policies.

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 5

The organization behind the API

Website

About

Blog

BlogRSS

Careers

Other 3

Properties that don't map to a standard resource type

CookiePolicy

CookiePolicy

Sustainability

Sustainability

Research

Research

Source (apis.yml)

aid: spiber
name: Spiber
description: Spiber Inc. is a Japanese biotechnology and advanced-materials company founded in 2007 and headquartered in Tsuruoka,
  Yamagata Prefecture, Japan. Spiber develops Brewed Protein materials — structural proteins produced by precision fermentation
  of plant-derived sugars using engineered microbes, then spun into fibers, resins, and films as animal-free, petroleum-free
  alternatives to silk, wool, cashmere, leather, and synthetic polymers. The company operates fermentation plants in Japan,
  Thailand, and the United States and supplies apparel, outdoor, automotive, and consumer brands, alongside a research program
  in synthetic biology, polymer science, and life-cycle assessment. Spiber is a materials manufacturer rather than a software
  vendor and publishes no developer program, developer portal, SDKs, or product API; the only machine-readable HTTP surface
  it serves is the read-only WordPress REST content API behind its corporate website.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://spiber.inc/en/opengraph-image.jpeg
url: https://raw.githubusercontent.com/api-evangelist/spiber/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-28'
modified: '2026-08-29'
tags:
- Company
- Biotechnology
- Materials Science
- Synthetic Biology
- Manufacturing
- Sustainability
- Textiles
- Precision Fermentation
- Japan
- Content
apis:
- aid: spiber-content-api
  name: Spiber Content API (WordPress REST)
  description: 'The read-only WordPress REST API that backs spiber.inc. The service names itself "Spiber API" in its own discovery
    document and is referenced from spiber.inc/robots.txt as the origin of the site sitemap. It exposes the standard wp/v2
    content namespace (posts, pages, media, taxonomies, types) plus a small custom/v1 namespace the site uses for menus and
    news listings. It is corporate-website infrastructure, not a published developer product: Spiber advertises no developer
    program, publishes no reference documentation for it, and marks every response x-robots-tag noindex. Anonymous GET access
    to the content routes is confirmed live; write, admin, migration, and jwt-auth routes are permission-gated.'
  humanURL: https://spiber.inc/en
  baseURL: https://spiber.xsrv.jp/api/wp-json
  tags:
  - Content
  - CMS
  - WordPress
  properties:
  - type: Authentication
    url: authentication/spiber-authentication.yml
  - type: Conventions
    url: conventions/spiber-conventions.yml
  - type: ErrorCatalog
    url: errors/spiber-problem-types.yml
  - type: DataModel
    url: data-model/spiber-data-model.yml
  - type: RateLimits
    url: rate-limits/spiber-rate-limits.yml
  - type: MCPServer
    url: mcp/spiber-mcp.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://spiber.inc/en
- type: About
  url: https://spiber.inc/en/about
- type: Blog
  url: https://spiber.inc/en/news
- type: BlogRSS
  url: https://spiber.inc/en/news/feed
- type: PrivacyPolicy
  url: https://spiber.inc/en/privacy-policy
- type: CookiePolicy
  url: https://spiber.inc/en/cookie-policy
- type: Careers
  url: https://spiber.inc/en/careers
- type: GitHubOrganization
  url: https://github.com/Spiber
- type: Sustainability
  url: https://spiber.inc/en/sustainability
- type: Research
  url: https://spiber.inc/en/academic-papers
- type: LLMsTxt
  url: llms/spiber-llms.txt
- type: DomainSecurity
  url: security/spiber-domain-security.yml
- type: Lifecycle
  url: lifecycle/spiber-lifecycle.yml
- type: Conformance
  url: conformance/spiber-conformance.yml
- type: Plans
  url: plans/spiber-plans-pricing.yml
- type: Packages
  url: packages/spiber-packages.yml
x-enrichment:
  date: '2026-08-29'
  status: minimal
  artifacts_added: 13
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Spiber manufactures Brewed Protein fiber, resin and film by precision fermentation and sells it to apparel and automotive
    brands under supply agreements, so it publishes no developer program at all; the only machine-readable HTTP surface on
    any Spiber host is the unadvertised read-only WordPress REST backend that renders spiber.inc, which serves every response
    with X-Robots-Tag noindex and has no reference documentation.
  evidence:
  - url: https://spiber.inc/developers
    status: 404
  - url: https://spiber.inc/openapi.json
    status: 404
  - url: https://spiber.inc/.well-known/agent-card.json
    status: 404
  - url: https://spiber.xsrv.jp/api/wp-json/
    status: 200
  - url: https://api.github.com/orgs/Spiber
    status: 200
  checked: '2026-08-29'

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