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 is listed with 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, authentication, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.6/100 emerging ▬ flat Agent 8/100 agent aware Front door AI 1/6 silent Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

1 API

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

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 16.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 8/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Chemistry and Materials (chemical data depositors, materials-data APIs)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 1

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

Spiber Website (WordPress REST)

The public WordPress REST API (wp-json) of the Spiber website at spiber.xsrv.jp/api: the route index of the site's content management system, catalogued as one site surface rath...

Pricing Plans 1

Published pricing tiers and plan structures.

Spiber Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Spiber Rate Limits

0 limits

RATE LIMITS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Spiber Authentication

3 schemes

SECURITY

Spiber Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conformance

Conventions

ErrorCatalog

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  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
apis:
- aid: spiber:spiber-xsrv-jp-api-website-wordpress-rest
  name: Spiber Website (WordPress REST)
  description: 'The public WordPress REST API (wp-json) of the Spiber website at spiber.xsrv.jp/api: the route index of the
    site''s content management system, catalogued as one site surface rather than as separate APIs.'
  baseURL: https://spiber.xsrv.jp/api/wp-json
  tags:
  - WordPress
  x-surface: platform-generated
  properties:
  - type: Documentation
    url: https://spiber.xsrv.jp/api/wp-json
  x-platform: wordpress
  x-platform-surface: rest
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
- 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: X-MCPServerCandidate
  url: mcp/spiber-mcp.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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