--- title: The Kin Score, Facet By Facet: Developer Ergonomics description: Part four of a nine-part series on the Kin Score covers the Developer Ergonomics facet, worth 20% of the composite score for API providers. It is scored across... canonical: https://daily.dev/posts/the-kin-score-facet-by-facet-developer-ergonomics-ayvojluy4 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The Kin Score, Facet By Facet: Developer Ergonomics | daily.dev og:description: Part four of a nine-part series on the Kin Score covers the Developer Ergonomics facet, worth 20% of the composite score for API providers. It is scored across... og:url: https://daily.dev/posts/the-kin-score-facet-by-facet-developer-ergonomics-ayvojluy4 og:image: https://api.daily.dev/og/posts/aYvOjLUY4.png og:image:alt: The Kin Score, Facet By Facet: Developer Ergonomics og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # The Kin Score, Facet By Facet: Developer Ergonomics **[API Evangelist](https://daily.dev/sources/apievangelist)** · 6 min read · 0 upvotes · 0 comments ## Summary Part four of a nine-part series on the Kin Score covers the Developer Ergonomics facet, worth 20% of the composite score for API providers. It is scored across 13 checks totaling 42 points, weighting a getting-started guide and standalone authentication docs most heavily, followed by a developer portal, documentation, and SDK coverage across multiple languages. Across 27,274 scored providers, the mean sub-score is 21.2 and the median just 9.5, with 23.6% scoring zero and only one provider, RudderStack, hitting 100. The piece notes the facet only checks for existence of artifacts, not their quality, and explains how authorship provenance affects credit for Postman collections and Agent Skills, many of which were auto-generated by the author's own tooling. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What does the Kin Score Developer Ergonomics facet measure and how many points is it worth? It measures thirteen checks worth 42 points total, counting toward 20% of the overall Kin Score composite for API providers. The highest-weighted checks are a getting started guide and standalone authentication documentation, each worth 5 points, followed by a developer portal and documentation at 4 points each, and SDKs worth 3 points for one language plus 4 more for three or more languages. _daily.dev surfaces api design and developer experience analysis like this for teams benchmarking their own docs._ ### How many API providers score zero on developer experience in the Kin Score catalog? On version 0.23.0 of the catalog covering 27,274 providers, 6,428 providers (23.6%) score exactly zero on the Developer Ergonomics facet, while the mean sub-score is 21.2 and the median is only 9.5 out of 100. Only 627 providers (2.3%) score 75 or above, and a single provider, RudderStack, scores a perfect 100. _developers evaluating api maturity can track benchmarks like this through daily.dev._ ### Does Postman collection or Agent Skill authorship affect API provider scoring credit? Yes, artifacts without a clear mark of authorship receive reduced credit under the Kin Score rubric as of version 0.23, dropping from full credit to 0.90 for both the Postman collection and Agent Skill checks. Providers who stamp their own authorship on a self-published collection or skill earn full first-party credit instead of the lower derived credit given to auto-generated artifacts. _daily.dev helps developers keep up with scoring and provenance rules shaping api tooling decisions._ ## Similar posts on daily.dev - [The Kin Score, Facet By Facet: Contract Quality](https://daily.dev/posts/the-kin-score-facet-by-facet-contract-quality-rpcg8n7gy) · API Evangelist · 1 upvotes · 0 comments - [The Kin Score, Facet By Facet: Discoverability](https://daily.dev/posts/the-kin-score-facet-by-facet-discoverability-u3iqbmapb) · API Evangelist · 0 upvotes · 0 comments - [The Kin Score, Facet By Facet: Contract Governance](https://daily.dev/posts/the-kin-score-facet-by-facet-contract-governance-rspejujou) · API Evangelist · 4 upvotes · 1 comments - [The Six Facets Behind the API Evangelist Composite Score](https://daily.dev/posts/the-six-facets-behind-the-api-evangelist-composite-score-mfqkfcumu) · API Evangelist · 0 upvotes · 0 comments - [I Stopped Building the Onboarding Fix. Now I Keep Score.](https://daily.dev/posts/i-stopped-building-the-onboarding-fix-now-i-keep-score--ka44ggbgi) · API Evangelist · 2 upvotes · 0 comments --- Tags: [#architecture](https://daily.dev/tags/architecture) [View this post on daily.dev](https://daily.dev/posts/the-kin-score-facet-by-facet-developer-ergonomics-ayvojluy4) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"The Kin Score, Facet By Facet: Developer Ergonomics","url":"https://daily.dev/posts/the-kin-score-facet-by-facet-developer-ergonomics-ayvojluy4","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-kin-score-facet-by-facet-developer-ergonomics-ayvojluy4"},"datePublished":"2026-10-02T09:50:13.681Z","dateModified":"2026-10-02T09:50:37.728Z","description":"Part four of a nine-part series on the Kin Score covers the Developer Ergonomics facet, worth 20% of the composite score for API providers. 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