specification: API Commons Plans specificationVersion: '0.1' schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans provider: API Stack providerId: api-stack created: '2026-05-04' modified: '2026-09-02' generated: '2026-09-02' method: searched source: https://www.apistack.io/ note: >- REPLACES a 2026-05-04 bulk-sweep scaffold that carried invented Free/Professional/Enterprise tiers with TBD prices and made-up quotas. Those tiers were never published by API Stack and have been removed. API Stack is a free public directory of API tooling; it sells nothing and publishes no pricing page. https://www.apistack.io/pricing returns 404, there is no /plans or /billing page, and the 268-URL sitemap contains no commercial page of any kind. The only commercial funnel on the site is "Get listed" (https://www.apistack.io/partner/request), an unpriced form for vendors requesting a directory listing. description: >- Machine-readable plans record for API Stack. API Stack publishes no plans or pricing: plan_count is 0 and this is a recorded absence, not a gap in the harvest. tags: - API Directory - API Tools - Apideck - Discovery - Free plan_count: 0 plans: [] evidence: - url: https://www.apistack.io/pricing status: 404 checked: '2026-09-02' - url: https://www.apistack.io/sitemap.xml status: 200 checked: '2026-09-02' note: 268 URLs - 213 app pages, 46 category pages, 9 site pages; no pricing or plans page - url: https://www.apistack.io/partner/request status: 200 checked: '2026-09-02' note: '"Get listed" request form; no price stated anywhere on the page' maintainers: - FN: Kin Lane email: info@apievangelist.com