specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
generated: '2026-09-06'
method: searched
source: >-
  Searched the Celanese public web surface (www.celanese.com, materials.celanese.com,
  askchemille.com) and the open web on 2026-09-06 for an API pricing or plans page.
  None exists — Celanese publishes no developer API and therefore no API plans, tiers,
  quotas or prices of any kind.
provider: Celanese
providerId: celanese
created: '2026-05-22'
modified: '2026-09-06'
tags:
  - Chemicals
  - Engineered Polymers
  - Materials
  - Specialty Materials
description: >-
  API plans record for Celanese. THERE ARE NO PLANS. Celanese is a chemical and specialty
  materials manufacturer with no public developer API, no developer portal and no API
  pricing page, so there is no tier, quota, overage or price to record. This is an honest
  zero, not an unchecked gap.
plans: []
plan_count: 0
references:
  - name: Celanese corporate site
    url: https://www.celanese.com
    status: 200
  - name: Chemille digital materials assistant
    url: https://materials.celanese.com
    status: 200
notes:
  - >-
    SUPERSEDES A FABRICATED SCAFFOLD. Until 2026-09-06 this file asserted a "celanese-free"
    freemium tier with a 1,000-request monthly quota and a 10 req/min rate limit, priced at
    0.00 and attached to the invented domain https://celanese.example/api. Celanese never
    published any of that. The scaffold was removed under the pipeline's no-fabrication rule
    and replaced with the measured result.
  - >-
    No Plans pointer is wired into apis.yml. A file that records the absence of plans must not
    be advertised as the provider publishing plans.