Plantd

Plantd is an American advanced-materials manufacturer based in Oxford, North Carolina, founded in 2021 by former SpaceX engineers Nathan Silvernail (CEO) and Huade Tan (CTO) with Josh Dorfman (CMO). The company grows and harvests fast-growing perennial grass on farms across North Carolina and Virginia and presses it into carbon-negative structural building panels intended to replace oriented strand board (OSB), plywood and other timber-based sheathing. Production runs on a modular, all-electric, closed-loop manufacturing platform in a 150,000+ sq ft facility, with a research farm in Stovall, NC. Customers and partners include homebuilder D.R. Horton and furniture brand Studio TK. Plantd has raised roughly $47.5M across seed, Series A and a $22M Series B (October 2025). Plantd is a physical-goods manufacturer: it publishes no developer program, no public API, and no machine-readable API contract of any kind — this profile records that absence rather than an API surface.

Plantd is profiled on the APIs.io network. Tagged areas include Company, Building Materials, Manufacturing, Construction, and Sustainability.

Plantd’s developer surface includes engineering blog and 6 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

4.0/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Heartbeat 95/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Building Materials Manufacturing Construction Sustainability Carbon Removal Climate Tech Advanced Materials Agriculture

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 4.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.2 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 2.4 — up to +19.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/plantd/apis.yml: open an issue on github.com/api-evangelist/plantd to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Plantd Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 6

The organization behind the API

Website

Blog

About

Careers

Press

LinkedIn

Source (apis.yml)

aid: plantd
name: Plantd
description: 'Plantd is an American advanced-materials manufacturer based in Oxford, North Carolina, founded in 2021 by former
  SpaceX engineers Nathan Silvernail (CEO) and Huade Tan (CTO) with Josh Dorfman (CMO). The company grows and harvests fast-growing
  perennial grass on farms across North Carolina and Virginia and presses it into carbon-negative structural building panels
  intended to replace oriented strand board (OSB), plywood and other timber-based sheathing. Production runs on a modular,
  all-electric, closed-loop manufacturing platform in a 150,000+ sq ft facility, with a research farm in Stovall, NC. Customers
  and partners include homebuilder D.R. Horton and furniture brand Studio TK. Plantd has raised roughly $47.5M across seed,
  Series A and a $22M Series B (October 2025). Plantd is a physical-goods manufacturer: it publishes no developer program,
  no public API, and no machine-readable API contract of any kind — this profile records that absence rather than an API surface.'
url: https://raw.githubusercontent.com/api-evangelist/plantd/refs/heads/main/apis.yml
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://cdn.prod.website-files.com/625f19c458e42f47692e03b8/626c2af7a62122515767dbe0_favicon-plantd-256x256-2.png
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-08-26'
tags:
- Company
- Building Materials
- Manufacturing
- Construction
- Sustainability
- Carbon Removal
- Climate Tech
- Advanced Materials
- Agriculture
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/plantd-domain-security.yml
- type: Website
  url: https://www.plantdmaterials.com/
- type: Blog
  url: https://www.plantdmaterials.com/blog
- type: About
  url: https://www.plantdmaterials.com/about
- type: Careers
  url: https://www.plantdmaterials.com/careers
- type: Press
  url: https://www.plantdmaterials.com/press-media
- type: LinkedIn
  url: https://www.linkedin.com/company/plantdmaterials/
x-enrichment:
  date: '2026-08-26'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Plantd manufactures carbon-negative structural building panels pressed from perennial grass; its entire web presence
    is a six-page Webflow marketing site (home, about, product, blog, careers, press) with no developer portal, no /api path,
    no GitHub organisation and no package on any registry.
  evidence:
  - url: https://www.plantdmaterials.com/openapi.json
    status: 404
  - url: https://www.plantdmaterials.com/api-docs
    status: 404
  - url: https://www.plantdmaterials.com/graphql
    status: 404
  - url: https://www.plantdmaterials.com/llms.txt
    status: 404
  - url: https://www.plantdmaterials.com/.well-known/agent-card.json
    status: 404
  - url: https://www.plantdmaterials.com/developers
    status: 404
  - url: https://api.github.com/orgs/plantd
    status: 404
  - url: https://www.plantdmaterials.com/
    status: 200
  checked: '2026-08-26'

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